1z0-082

Pregunta 1 de 120

1

You execute this command:
CREATE BIGFILE TABLESPACE big_tbs
DATAFILE '/u01/oracle/data/big_f1.dbf'
SIZE 20G;

Sufficient storage is available in filesystem /u01.
Which two statements are true about the BIG_TBS tablespace?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

AUTOEXTEND is possible for the datafile
It must be bigger than the largest SMALLFILE tablespace
Additional data files may not be added
It will be a dictionary-managed tablespace by default
It will always have a 32K blocksize

Explicación

Pregunta 2 de 120

1

Which statement is true about the INTERSECT operator used in compound queries?

Selecciona una o más de las siguientes respuestas posibles:

Multiple INTERSECT operators are not possible in the same SQL statement
It processes NULLs in the selected columns
INTERSECT is of lower precedence than UNION or UNION ALL
It ignores NULLs

Explicación

Pregunta 3 de 120

1

Which three statements are true about advanced connection options supported by Oracle Net for connection to Oracle Database instances?

(Choose three).

Selecciona una o más de las siguientes respuestas posibles:

Connect Time Failover requires the use of Transparent Application Failover (TAF)
Source Routing requires the use of a name server
Source Routing enables the use of Connection Manager (CMAN) which enables network traffic to be routed through a firewall
Load Balancing can balance the number of connections to dispatchers when using a Shared Server configuration
Load Balancing requires the use of a name server
Connect Time Failover requires the connect string to have two or more listener addresses configured

Explicación

Pregunta 4 de 120

1

Which two statements are true about date/time functions in a session where NLS_DATE_FORMAT is set to DD-MON-YYYY HH24:MI:SS?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

CURRENT_TIMESTAMP returns the same date and time as SYSDATE with additional details of fractional seconds
SYSDATE can be queried only from the DUAL table
CURRENT_DATE returns the current date and time as per the session time zone
SYSDATE can be used in expressions only if the default date format is DD-MON-RR
SYSDATE and CURRENT_DATE return the current date and time set for the operating system of the database server
CURRENT_TIMESTAMP returns the same date as CURRENT_DATE

Explicación

Pregunta 5 de 120

1

A database is configured to use automatic undo management with temporary undo enabled. An UPDATE is executed on a temporary table.

Where is the UNDO stored?

Selecciona una de las siguientes respuestas posibles:

In the undo tablespace
In the SYSAUX tablespace
In the SGA
In the PGA
In the temporary tablespace

Explicación

Pregunta 6 de 120

1

You have been tasked to create a table for a banking application.
One of the columns must meet three requirements:
1. Be stored in a format supporting date arithmetic without using conversion functions
2. Store a loan period of up to 10 years
3. Be used for calculating interest for the number of days the loan remains unpaid

Which data type should you use?

Selecciona una de las siguientes respuestas posibles:

INTERVAL YEAR TO MONTH
INTERVAL DAY TO SECOND
TIMESTAMP WITH LOCAL TIMEZONE
TIMESTAMP
TIMESTAMP WITH TIMEZONE

Explicación

Pregunta 7 de 120

1

In the spfile of a single instance database, LOCAL_LISTENER is set to LISTENER_1.
The TNSNAMES.ORA file in $ORACLE_HOME/network/admin in the database home contains:
LISTENER_1 =
(ADDRESS =
(PROTOCOL = TCP)
(HOST = host1.abc.com)
(PORT = 5121)
)

Which statement is true?

Selecciona una de las siguientes respuestas posibles:

Dynamic service registration cannot be used for this database instance
The LREG process registers services dynamically with the LISTENER_1 listener
LISTENER_1 must also be defined in the LISTENER.ORA file to enable dynamic service registration
There are two listeners named LISTENER and LISTENER_1 running simultaneously using port 1521 on the same host as the database instances
The definition for LISTENER_1 requires a CONNECT_DATA section to enable dynamic service registration

Explicación

Pregunta 8 de 120

1

Which three statements are true concerning logical and physical database structures?

(Choose three).

Selecciona una o más de las siguientes respuestas posibles:

All tablespaces may have one or more data files
The extents of a segment must always reside in the same datafile
A smallfile tablespace might be bigger than a bigfile tablespace
A segment can span multiple data files in some tablespaces
A segment's blocks can be of different sizes
A segment might have only one extent
Segments can span multiple tablespaces

Explicación

Pregunta 9 de 120

1

Which two statements are true regarding a SAVEPOINT?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

Rolling back to a SAVEPOINT can undo a CREATE INDEX statement
Rolling back to a SAVEPOINT can undo a TRUNCATE statement
Only one SAVEPOINT may be issued in a transaction
A SAVEPOINT does not issue a COMMIT
Rolling back to a SAVEPOINT can undo a DELETE statement

Explicación

Pregunta 10 de 120

1

Which three functions are performed by dispatchers in a shared server configuration?

(Choose three).

Selecciona una o más de las siguientes respuestas posibles:

Writing inbound request to the common request queue from all shared server connections
Checking for outbound shared server responses on the common outbound response queue
Receiving inbound requests from processes using shared server connections
Sending each connection input request to the appropriate shared server input queue
Broadcasting shared server session responses back to requesters on all connections
Sending shared server session responses back to requesters on the appropriate connection

Explicación

Pregunta 11 de 120

1

Which two statements are true about the SET VERIFY ON command?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

It can be used only in SQL*Plus
It displays values for variables used only in the WHERE clause of a query
It can be used in SQL Developer and SQL*Plus
It displays values for variables created by the DEFINE command
It displays values for variables prefixed with &&

Explicación

Pregunta 12 de 120

1

Which three statements are true about a self join?

(Choose three).

Selecciona una o más de las siguientes respuestas posibles:

The ON clause must be used
The query must use two different aliases for the table
It must be an equijoin
It must be an inner join
The ON clause can be used
It can be an outer join

Explicación

Pregunta 13 de 120

1

You want to write a query that prompts for two column names and the WHERE condition each time it is executed in a session but only prompts for the table name the first time it is executed.
The variables used in your query are never undefined in your session.

Which query can be used?

Selecciona una de las siguientes respuestas posibles:

SELECT &&col1, &&col2 FROM &table WHERE &&condition = &&cond;
SELECT &col1, &col2 FROM &&table WHERE &condition;
SELECT &col1, &col2 FROM ג€&tableג€ WHERE &condition;
SELECT '&&col1', '&&col2' FROM &table WHERE '&&condition' = '&cond';
SELECT &&col1, &&col2 FROM &table WHERE &&condition;

Explicación

Pregunta 14 de 120

1

Examine the description of the CUSTOMERS table:
Name Null? Type
--------------------------- -------------- ------------
CUST_ID NOT NULL VARCHAR2(6)
FIRST_NAME VARCHAR2(50)
LAST_NAME NOT NULL VARCHAR2(50)
ADDRESS VARCHAR2(50)
CITY VARCHAR2(25)

You want to display details of all customers who reside in cities starting with the letter D followed by at least two characters.

Which query can be used?

Selecciona una de las siguientes respuestas posibles:

SELECT * FROM customers WHERE city LIKE 'D_%';
SELECT * FROM customers WHERE city = '%D_';
SELECT * FROM customers WHERE city LIKE 'D_';
SELECT * FROM customers WHERE city = 'D_%';

Explicación

Pregunta 15 de 120

1

Examine this command:
ALTER DATABASE
MOVE DATAFILE '/u01/sales1.dbf'
TO '/u01/sales01.dbf'
REUSE;

Which two statements are true?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

DML may be performed on tables with one or more extents in this data file during the execution of this command.
The tablespace containing SALES1.DBF must be altered READ ONLY before executing the command.
The tablespace containing SALES1.DBF must be altered OFFLINE before executing the command.
If Oracle Managed Files (OMF) is used, then the file is renamed but moved to DB_CREATE_FILE_DEST.
The file is renamed and stored in the same location.

Explicación

Pregunta 16 de 120

1

Which three statements are true about dropping and unused columns in an Oracle database?

(Choose three).

Selecciona una o más de las siguientes respuestas posibles:

A primary key column referenced by another column as a foreign key can be dropped if using the CASCADE option.
An UNUSED column's space is reclaimed automatically when the block containing that column is next queried.
An UNUSED column's space is reclaimed automatically when the row containing that column is next queried.
Partition key columns cannot be dropped.
A DROP COLUMN command can be rolled back.
A column that is set to UNUSED still counts towards the limit of 1000 columns per table.

Explicación

Pregunta 17 de 120

1

Which two statements are true regarding Oracle database space management within blocks managed by Automatic Segment Space Management (ASSM)?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

PCTFREE defaults to 10% for all blocks in all segments for all compression methods.
ASSM assigns blocks to one of four fullness categories based on what percentage of the block is allocated for rows.
Update operations always attempt to find blocks with free space appropriate to the length of the row being updated.
Insert operations always attempt to find blocks with free space appropriate to the length of the row being inserted.
A block will always be eligible for inserts if the row is short enough to fit into the block

Explicación

Pregunta 18 de 120

1

Evaluate these commands which execute successfully:
CREATE SEQUENCE ord_seq
INCREMENT BY 1
START WITH 1
MAXVALUE 100000
CYCLE
CACHE 5000;

CREATE TABLE ord _items(
ord_no NUMBER(4) DEFAULT ord_seq NEXTVAL NOT NULL,
item_no NUMBER(3),
qty NUMBER(3),
expiry_date DATE,
CONSTRAINT it _pk PRIMARY KEY (ord_no, item_no),
CONSTRAINT ord_fk FOREIGN KEY (ord_no) REFERENCES orders (ord _no));

Which two statements are true about the ORD_ITEMS table and the ORD_SEQ sequence?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

If sequence ORD_SEQ is dropped then the default value for column ORD_NO will be NULL for rows inserted into ORD_ITEMS.
Any user inserting rows into table ORD_ITEMS must have been granted access to sequence ORD_SEQ.
Column ORD_NO gets the next number from sequence ORD_SEQ whenever a row is inserted into ORD_ITEMS and no explicit value is given for ORD_NO.
Sequence ORD_SEQ cycles back to 1 after every 5000 numbers and can cycle 20 times.
Sequence ORD_SEQ is guaranteed not to generate duplicate numbers

Explicación

Pregunta 19 de 120

1

Which three instance situations are possible with the Oracle Database server without multi-tenant?

(Choose three).

Selecciona una o más de las siguientes respuestas posibles:

Two or more instances on separate servers all associated with one database.
One instance on one server associated with one database.
One instance on one server associated with two or more databases on the same server.
One instance on one server not associated with any database
One instance on one server associated with two or more databases on separate servers.

Explicación

Pregunta 20 de 120

1

Which two statements are true about the ORDER BY clause when used with a SQL statement containing a SET operator such as UNION?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

Column positions must be used in the ORDER BY clause.
Only column names from the first SELECT statement in the compound query are recognized.
The first column in the first SELECT of the compound query with the UNION operator is used by default to sort output in the absence of an ORDER BY clause.
Each SELECT statement in the compound query must have its own ORDER BY clause.
Each SELECT statement in the compound query can have its own ORDER BY clause.

Explicación

Pregunta 21 de 120

1

Which four account management capabilities can be configured using Oracle profiles?

(Choose four).

Selecciona una o más de las siguientes respuestas posibles:

The number of hours for which an account is locked after the configured number of login attempts has been reached.
The number of days for which an account may be inactive before it is locked.
The maximum amount of CPU time allowed for a user's sessions before their account is locked.
The ability to prevent a password from ever being reused.
The number of password changes required within a period of time before a password can be reused.
The number of days for which an account is locked after the configured number of login attempts has been reached.
The maximum number of sessions permitted for a user before the account is locked

Explicación

Pregunta 22 de 120

1

Which three statements are true about single-row functions?

(Choose three).

Selecciona una o más de las siguientes respuestas posibles:

They can be used only in the WHERE clause of a SELECT statement.
The argument can be a column name, variable, literal or an expression.
The data type returned can be different from the data type of the argument.
They can be nested to any level.
They can accept only one argument.
They return a single result row per table.

Explicación

Pregunta 23 de 120

1

You want to use table compression suitable for OLTP that will:
1. Compress rows for all DML statements on that table
2. Minimize the overheads associated with compression

Which compression option is best suited for this?

Selecciona una de las siguientes respuestas posibles:

COLUMN STORE COMPRESS FOR QUERY LOW
ROW STORE COMPRESS BASIC
COLUMN STORE COMPRESS FOR ARCHIVE LOW
COLUMN STORE COMPRESS FOR ARCHIVE HIGH
ROW STORE COMPRESS ADVANCED

Explicación

Pregunta 24 de 120

1

Which two statements are true about space-saving features in an Oracle Database?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

Private Temporary Tables (PTTS) store metadata in memory only
An index created with the UNUSABLE attribute has no segment
If they exist for a session, Private Temporary Tables (PTTs) are always dropped at the next COMMIT OR ROLLBACK statement
An index that is altered to be UNUSABLE will retain its segment
A table that is truncated will always have its segment removed

Explicación

Pregunta 25 de 120

1

Which two statements are true about the PMON background process?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

It registers database services with all local and remote listeners known to the database instance.
It frees resources held by abnormally terminated processes.
It records checkpoint information in the control file.
It frees unused temporary segments.
It kills sessions that exceed idle time.

Explicación

Pregunta 26 de 120

1

In which three situations does a new transaction always start?

(Choose three).

Selecciona una o más de las siguientes respuestas posibles:

When issuing a SELECT FOR UPDATE statement after a CREATE TABLE AS SELECT statement was issued in the same session.
When issuing a TRUNCATE statement after a SELECT statement was issued in the same session.
When issuing a CREATE TABLE statement after a SELECT statement was issued in the same session.
When issuing the first Data Manipulation Language (DML) statement after a COMMIT OR ROLLBACK statement was issued in the same session.
When issuing a CREATE INDEX statement after a CREATE TABLE statement completed successfully in the same session.
When issuing a DML statement after a DML statement failed in the same session.

Explicación

Pregunta 27 de 120

1

Examine the description of the SALES1 table:
Name Null Type
------------------------ ------------- ------------
SALES_ID NOT NULL NUMBER
STORE_ID NOT NULL NUMBER
ITEMS_ID NUMBER
QUANTITY NUMBER
SALES_DATE DATE

SALES2 is a table with the same description as SALES1.
Some sales data is duplicated in both tables.
You want to display the rows from the SALES1 table which are not present in the SALES2 table.

Which set operator generates the required output?

Selecciona una de las siguientes respuestas posibles:

INTERSECT
UNION ALL
UNION
SUBTRACT
MINUS

Explicación

Pregunta 28 de 120

1

Your database instance is started with a PFILE. Examine these parameters:
Name Type Value
------------------------------ --------------- ------
memory_max_target big integer 0
memory_target big integer 0
sga_max_size big integer 2G
sga_target big integer 2G

You want to increase the size of the buffer cache. Free memory is available to increase the size of the buffer cache.

You execute the command:
SQL> ALTER SYSTEM SET DB_CACHE_SIZE=1024M;

What is the outcome?

Selecciona una de las siguientes respuestas posibles:

The value is changed only in the PFILE and takes effect at the next instance startup.
The value is changed for the current instance and in the PFILE.
It fails because the SCOPE clause is missing.
Change is applied to the current instance, but does not persist after instance restart

Explicación

Pregunta 29 de 120

1

Which three Oracle database space management features will work with both Dictionary and Locally managed tablespaces?

(Choose three).

Selecciona una o más de las siguientes respuestas posibles:

Oracle Managed Files (OMF)
Online table segment shrink
Online index segment shrink
Automatic data file extension (AUTOEXTEND)
Capacity planning growth reports based on historical data in the Automatic Workload Repository (AWR)

Explicación

Pregunta 30 de 120

1

You execute this command:
[oracle@host01 ~]$ expdp system/oracle \
> FULL=Y \
> DUMPFILE=exp_db_full.dmp \
> PARALLEL=4 \
> LOGFILE=exp_dp_full.log \
> JOB_NAME=exp_db_full \

During the export operation, you detach from the job by using CTRL+C and then execute this command:
Export> STOP_JOB=immediate -
Are you sure you wish to stop the job ([yes]/no): yes

Which two statements are true about the job?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

You can no longer monitor it.
You can reattach to it and monitor it.
It is paused and can be resumed.
It continues to run in the background.
It terminates.

Explicación

Pregunta 31 de 120

1

In one of your databases, you create a user, HR, and then execute this command:
GRANT CREATE SESSION TO hr WITH ADMIN OPTION;

Which four actions can HR perform?

(Choose four).

Selecciona una o más de las siguientes respuestas posibles:

Revoke the CREATE SESSION privilege from other users.
Revoke the CREATE SESSION privilege from user HR.
Log in to the database instance.
Grant the CREATE SESSION privilege with ADMIN OPTION to other users.
Execute DDL statements in the HR schema.
Execute DML statements in the HR schema.

Explicación

Pregunta 32 de 120

1

Which two statements are true about the WHERE and HAVING clauses in a SELECT statement?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

Aggregating functions and columns used in HAVING clauses must be specified in the SELECT list of a query.
WHERE and HAVING clauses can be used in the same statement only if applied to different table columns.
The HAVING clause can be used with aggregating functions in subqueries.
The WHERE clause can be used to exclude rows before dividing them into groups.
The WHERE clause can be used to exclude rows after dividing them into groups.

Explicación

Pregunta 33 de 120

1

Which two statements are true about UNDO and REDO?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

The generation of UNDO generates REDO.
DML modifies Oracle database objects and only generates UNDO.
The generation of REDO generates UNDO.
DML modifies Oracle database objects and only generates REDO.
DML modifies Oracle database objects and generates UNDO and REDO.

Explicación

Pregunta 34 de 120

1

The SCOTT/TIGER user exists in two databases, BOSTON_DB and DALLAS_DB, in two different locations. Each database has a tnsnames.ora file defining DALLAS_DB as a service name.

Examine this command:
CREATE DATABASE LINK dblink1 CONNECT TO scott IDENTIFIED BY tiger USING 'dallas_db';

How do you execute the command so that only SCOTT in BOSTON_DB can access the SCOTT schema in DALLAS_DB?

Selecciona una de las siguientes respuestas posibles:

as SCOTT in DALLAS_DB
as SCOTT in BOSTON_DB
as SCOTT in BOSTON_DB and SYS in DALLAS_DB
as SYS in both the databases
as SCOTT in both the databases

Explicación

Pregunta 35 de 120

1

Which three statements are true about the DESCRIBE command?

(Choose three).

Selecciona una o más de las siguientes respuestas posibles:

It displays the PRIMARY KEY constraint for any column or columns that have that constraint.
It can be used from SQL Developer.
It displays the NOT NULL constraint for any columns that have that constraint.
It can be used to display the structure of an existing view.
It displays all constraints that are defined for each column.
It can be used only from SQL*Plus.

Explicación

Pregunta 36 de 120

1

Examine the description of the CUSTOMERS table:
Name Null? Type
-------------------------------------- ------------------- ------------
CUST_ID NOT NULL NUMBER
CUST_FIRST_NAME NOT NULL VARCHAR2(20)
CUST_LAST_NAME NOT NULL VARCHAR2(30)
CUST_INCOME_LEVEL VARCHAR2(30)
CUST_CREDIT_LIMIT NUMBER

For customers whose income level has a value, you want to display the first name and due amount as 5% of their credit limit. Customers whose due amount is null should not be displayed.

Which query should be used?

Selecciona una de las siguientes respuestas posibles:

SELECT cust_first_name, cust_credit_limit * .05 AS DUE_AMOUNT FROM customers WHERE cust_income_level IS NOT NULL AND due_amount IS NOT NULL;
SELECT cust_first_name, cust_credit_limit * .05 AS DUE_AMOUNT FROM customers WHERE cust_income_level != NULL AND cust_credit_level !=NULL;
SELECT cust_first_name, cust_credit_limit * .05 AS DUE_AMOUNT FROM customers WHERE cust_income_level <> NULL AND due_amount <> NULL;
SELECT cust_first_name, cust_credit_limit * .05 AS DUE_AMOUNT FROM customers WHERE cust_income_level != NULL AND due_amount != NULL;
SELECT cust_first_name, cust_credit_limit * .05 AS DUE_AMOUNT FROM customers WHERE cust_income_level IS NOT NULL AND cust_credit_limit IS NOT NULL;

Explicación

Pregunta 37 de 120

1

The INVOICE table has a QTY_SOLD column of data type NUMBER and an INVOICE_DATE column of data type DATE.
NLS_DATE_FORMAT is set to DD-MON-RR.

Which two are true about data type conversions involving these columns in query expressions?

(Choose two). ==> 3

Selecciona una o más de las siguientes respuestas posibles:

CONCAT (qty_sold, invoice_date) : requires explicit conversion
invoice_date = '15-march-2019' : uses implicit conversion
invoie_date > '01-02-2019' : uses implicit conversion
qty_sold BETWEEN '101' AND '110' : uses implicit conversion
qty_sold = '0554982' uses implicit conversion

Explicación

Pregunta 38 de 120

1

Which three are types of segments in an Oracle Database?

(Choose three).

Selecciona una o más de las siguientes respuestas posibles:

undo
index
stored procedures
sequences
tables
clusters

Explicación

Pregunta 39 de 120

1

Which two statements are true about the results of using the INTERSECT operator in compound queries?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

Column names in each SELECT in the compound query can be different.
The number of columns in each SELECT in the compound query can be different.
Reversing the order of the intersected tables can sometimes affect the output.
INTERSECT returns rows common to both sides of the compound query.
INTERSECT ignores NULLs.

Explicación

Pregunta 40 de 120

1

Which two statements are true about single row functions?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

MOD : returns the quotient of a division operation
FLOOR : returns the smallest integer greater than or equal to a specified number
TRUNC : can be used with NUMBER and DATE values
CONCAT : can be used to combine any number of values
CEIL : can be used for positive and negative numbers

Explicación

Pregunta 41 de 120

1

The EMPLOYEES table contains columns EMP_ID of data type NUMBER and HIRE_DATE of data type DATE.
You want to display the date of the first Monday after the completion of six months since hiring.
The NLS_TERRITORY parameter is set to AMERICA in the session and, therefore, Sunday is the first day on the week.

Which query can be used?

Selecciona una de las siguientes respuestas posibles:

SELECT emp_id, ADD_MONTHS(hire_date, 6), NEXT_DAY('MONDAY') FROM employees;
SELECT emp_id, NEXT_DAY(ADD_MONTHS(hire_date, 6), 'MONDAY') FROM employees;
SELECT emp_id, NEXT_DAY(MONTHS_BETWEEN(hire_date, SYSDATE), 6) FROM employees;
SELECT emp_id, NEXT_DAY(ADD_MONTHS(hire_date, 6), 1) FROM employees;

Explicación

Pregunta 42 de 120

1

The ORCL database has RESUMABLE__TIMEOUT = 7200 and DEFERRED_SEGMENT_CREATION = FALSE
User U1 has a 1 MB quota in tablespace DATA.
U1 executes this command:

SQL> CREATE TABLE t1 AS
(SELECT object_name, sharing, created FROM dba_objects);

U1 complains that the command is taking too long to execute.

In the alert log, the database administrator (DBA) finds this:
2017-03-06T12:15:17.183438+05:30 statement in resumable session 'User U1(136), Session 1, Instance 1' was suspended due to ORA-01536: space quota exceeded for tablespace 'DATA'

Which are three actions any one of which the DBA could take to resume the session?

(Choose three).

Selecciona una o más de las siguientes respuestas posibles:

Add a data file to DATA.
Drop other U1 objects in DATA.
Increase U1's quota sufficiently in DATA.
Set DEFERRED_SEGMENT_CREATION to TRUE.
Grant UNLIMITED TABLESPACE to U1.
Set AUTOEXTEND ON for data files in DATA.

Explicación

Pregunta 43 de 120

1

Which three statements are true about the Oracle Data Dictionary?

(Choose three).

Selecciona una o más de las siguientes respuestas posibles:

Data dictionary views are created by joins of dictionary base tables and DBA-defined tables.
The data dictionary is created and maintained by the database administrator.
Views with the same name but different prefixes, such as CDB, DBA, ALL and SER, reference the same base tables from the data dictionary.
Base tables can be queried directly.
It is owned by the SYSTEM user.
Usernames of all users including database administrators are stored in the data dictionary

Explicación

Pregunta 44 de 120

1

In one of your databases, the user HR has the password HRMGR.
You want to connect to a database instance whose listener listens on port 1531 by using this statement:

CONNECT HR/HRMGR@orcl -

No name server is used.

Which statement is true about ORCL?

Selecciona una de las siguientes respuestas posibles:

It must be the value of the SERVICE_NAMES parameter on the client side.
It must resolve to a valid connect descriptor in the server's tnsnames.ora file
It must resolve to a valid connect descriptor in the client's tnsnames.ora file
It must be the name of the database to whose instance HR wishes to connect
It must be the name of the server running the database to whose instance HR wishes to connect

Explicación

Pregunta 45 de 120

1

Which two statements are true about views used for viewing tablespace and datafile information?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

Tablespace free space can be viewed in V$TABLESPACE.
V$TABLESPACE displays information that is contained in the controlfile about tablespaces.
V$TABLESPACE displays information about tablespaces contained in the data dictionary.
Tablespace free space can be viewed in DBA_TABLESPACES.
A datafile can be renamed when the database is in MOUNT state and the new file name is displayed when querying DBA_DATA_FILES after the database is opened.

Explicación

Pregunta 46 de 120

1

Examine the description of the PROMOTIONS table:
Name Null? Type
-----------------------------------------------------------------------
PROMO_ID NOT NULL NUMBER(6)
PROMO_NAME NOT NULL VARCHAR2(30)
PROMO_CATEGORY NOT NULL VARCHAR2(30)
PROMO_COST NOT NULL NUMBER(10,2)

You want to display the unique promotion costs in each promotion category.
Which two queries can be used?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

SELECT promo_cost, promo_category FROM promotions ORDER BY by 1;
SELECT DISTINCT promo_cost || ' in ' || DISTINCT promo_category FROM promotions ORDER BY 1;
SELECT DISTINCT promo_category || ' has ' || promo_cost AS COSTS FROM promotions ORDER BY 1;
SELECT promo_category, DISTINCT promo_cost FROM promotions ORDER BY 2;
SELECT DISTINCT promo_category, promo_cost FROM promotions ORDER BY 1;

Explicación

Pregunta 47 de 120

1

In the ORCL database, UNDOTBS1 is the active undo tablespace with these properties:
1. A size of 100 MB
2. AUTOEXTEND is off
3. UNDO_RETENTION is set to 15 minutes
4. It has RETENTION GUARANTEE

UNDOTBS1 fills with uncommitted undo 10 minutes after the database opens.

What will happen when the next update is attempted by any transaction?

Selecciona una de las siguientes respuestas posibles:

It succeeds and the generated undo is stored in SYSTEM.
It fails and returns the error message ג€ORA-30036: unable to extend segment by 8 in undo tablespace 'UNDOTBS1'ג€.
It succeeds and the least recently written undo block of UNDOTBS1 is overwritten by the generated undo.
It succeeds and the generated undo is stored in SYSAUX.
It succeeds and the least recently read undo block of UNDOTBS1 is overwritten by the generated undo.

Explicación

Pregunta 48 de 120

1

Which two statements are true about the rules of precedence for operators?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

The concatenation operator | | is always evaluated before addition and subtraction in an expression.
NULLS influence the precedence of operators in an expression.
The + binary operator has the highest precedence in an expression in a SQL statement.
Arithmetic operators with equal precedence are evaluated from left to right within an expression.
Multiple parentheses can be used to override the default precedence of operators in an expression.

Explicación

Pregunta 49 de 120

1

In one of your databases, user KING is:
1. Not a DBA user
2. An operating system (OS) user

Examine this command and its output:
SHOW PARAMETER OS_AUTHENT_PREFIX

NAME TYPE VALUE
--------------------------------------------------------
os_authent_prefix string

What must you do so that KING is authenticated by the OS when connecting to the database instance?

Selecciona una de las siguientes respuestas posibles:

Set OS_AUTHENT_PREFIX to OPS$
Have the OS administrator add KING to the OSDBA group
Grant DBA to KING
Unset REMOTE_LOGIN_PASSWORDFILE
Alter user KING to be IDENTIFIED EXTERNALLY

Explicación

Pregunta 50 de 120

1

View the Exhibits and examine the structure of the COSTS and PROMOTIONS tables.

You want to display PROD_IDS whose promotion cost is less than the highest cost PROD_ID in a promotion time interval.

Examine this SQL statement:

SELECT prod_id
FROM costs
WHERE promo_id IN
(SELECT promo_id
FROM promotions
WHERE promo_cost < ALL
(SELECT MAX(promo_cost)
FROM promotions
GROUP BY (promo_end_date - promo_begin_date)));

What will be the result?

Selecciona una de las siguientes respuestas posibles:

It gives an error because the ALL keyword is not valid.
It gives an error because the GROUP BY clause is not valid.
It executes successfully but does not give the required result.
It executes successfully and gives the required result.

Explicación

Pregunta 51 de 120

1

Which three statements are true about GLOBAL TEMPORARY TABLES?

(Choose three).

Selecciona una o más de las siguientes respuestas posibles:

A TRUNCATE command issued in a session causes all rows in a GLOBAL TEMPORARY TABLE for the issuing session to be deleted.
GLOBAL TEMPORARY TABLE rows inserted by a session are available to any other session whose user has been granted select on the table.
GLOBAL TEMPORARY TABLE space allocation occurs at session start.
Any GLOBAL TEMPORARY TABLE rows existing at session termination will be deleted.
A GLOBAL TEMPORARY TABLE'S definition is available to multiple sessions.
A DELETE command on a GLOBAL TEMPORARY TABLE cannot be rolled back.

Explicación

Pregunta 52 de 120

1

Which two statements are true about trace files produced by the Oracle Database server?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

They can be written by server processes.
Trace files are written to the Fast Recovery Area (FRA).
They can be written by background processes.
All trace files contain error information that require contacting Oracle Support.
Trace file names are based on the database name concatenated with a sequential number.

Explicación

Pregunta 53 de 120

1

You need to calculate the number of days from 1 January 2019 until today.
Dates are stored in the default format of DD-MON-RR.

Which two queries give the required output?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

SELECT TO_CHAR(SYSDATE, 'DD-MON-YYYY') - '01-JAN-2019' FROM DUAL;
SELECT ROUND(SYSDATE - '01-JAN-2019') FROM DUAL;
SELECT ROUND(SYSDATE - TO_DATE('01/JANUARY/2019')) FROM DUAL;
SELECT TO_DATE(SYSDATE, 'DD/MONTH/YYYY') - '01/JANUARY/2019' FROM DUAL;
SELECT SYSDATE - TO_DATE('01-JANUARY-2019') FROM DUAL;

Explicación

Pregunta 54 de 120

1

Which two statements are true about the DUAL table?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

It can be accessed only by the SYS user.
It consists of a single row and single column of VARCHAR2 data type.
It can display multiple rows but only a single column.
It can be used to display only constants or pseudo columns.
It can be accessed by any user who has the SELECT privilege in any schema.
It can display multiple rows and columns.

Explicación

Pregunta 55 de 120

1

Which four statements are true regarding primary and foreign key constraints and the effect they can have on table data?

(Choose four).

Selecciona una o más de las siguientes respuestas posibles:

A table can have only one primary key but multiple foreign keys.
A table can have only one primary key and one foreign key.
The foreign key columns and parent table primary key columns must have the same names.
It is possible for child rows that have a foreign key to remain in the child table at the time the parent row is deleted.
It is possible for child rows that have a foreign key to be deleted automatically from the child table at the time the parent row is deleted.
Only the primary key can be defined at the column and table level.
Primary key and foreign key constraints can be defined at both the column and table level.

Explicación

Pregunta 56 de 120

1

Examine the description of the EMPLOYEES table:
Name Null? Type
----------------------------------------------------
EMP_ID NOT NULL NUMBER
EMP_NAME VARCHAR2(40)
DEP_ID NUMBER(2)
SALARY NUMBER(8,2)
JOIN_DATE DATE

Which query is valid?

Selecciona una de las siguientes respuestas posibles:

SELECT dept_id, AVG(MAX(salary)) FROM employees GROUP BY dept_id;
SELECT dept_id, join_date, SUM(salary) FROM employees GROUP BY dept_id;
SELECT dept_id, join_date, SUM(salary) FROM employees GROUP BY dept_id, join_date;
SELECT dept_id, MAX(AVG(salary)) FROM employees GROUP BY dept_id;

Explicación

Pregunta 57 de 120

1

What is true about non-equijoin statement performance?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

Table aliases can improve performance.
The BETWEEN condition always performs better than using the >= and <= conditions.
The join syntax used makes no difference to performance.
The BETWEEN condition always performs less well than using the >= and <= conditions.
The Oracle join syntax performs better than the SQL:1999 compliant ANSI join syntax.

Explicación

Pregunta 58 de 120

1

In your data center, Oracle Managed Files (OMF) is used for all databases. All tablespaces are smallfile tablespaces.
SALES_Q1 is a permanent user-defined tablespace in the SALES database.

Examine this command which is about to be issued by a DBA logged in to the SALES database:
ALTER TABLESPACE sales_q1 ADD DATAFILE;

Which are two actions, either one of which you could take to ensure that the command executes successfully?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

Ensure that DB_RECOVERY_FILE_DEST and DB_CREATE_FILE_DEST each specify with at least 50 Mb of available space.
Specify a path in the DATAFILE clause of the command specifying a location with at least 100M of available space.
Ensure that DB_CREATE_FILE_DEST specifies a location with at least 100 Mb of available space.
Add the AUTOEXTEND ON clause with NEXT set to 100M.
Ensure that DB_RECOVERY_FILE_DEST and DB_CREATE_FILE_DEST each specify locations with at least 50 Mb of available space.

Explicación

Pregunta 59 de 120

1

Examine this command and some partial output:
LSNRCTL> start LISTENER_1

Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=PROTOCOL=tcp) (HOST=host01.abc.com) (PORT=1562))
Services Summary...
Service "DB01.abc.com" has 1 instance(s).
Instance "DB01" status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully

Why does the DB01.abc.com service show unknown status?

Selecciona una de las siguientes respuestas posibles:

The service DB01.abc.com is dynamically registered.
The LOCAL_LISTENER database parameter is not set to a service name that refers to LISTENER_1.
The service DB01.abc.com is statically registered.
The listener is not listening on the default port 1521.
The SID_LIST_LISTENER section is not contained in the LISTENER.ORA file

Explicación

Pregunta 60 de 120

1

Which three statements are true about the tools used to configure Oracle Net Services?

(Choose three).

Selecciona una o más de las siguientes respuestas posibles:

The Oracle Net Configuration Assistant is only used when running the Oracle installer.
Oracle Net Manager can be used to centrally configure listeners on any database server target.
The lsnrctl utility requires a listener.ora file to exist before it is started.
Oracle Net Manager can be used to locally configure naming methods on a database server.
Enterprise Manager Cloud Control can be used to centrally configure listeners on any managed database server.
Enterprise Manager Cloud Control can be used to centrally configure net service names for any database server target

Explicación

Pregunta 61 de 120

1

Which two statements are true regarding the UNION and UNION ALL operators?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

Duplicates are eliminated automatically by the UNION ALL operator.
The number of columns selected in each SELECT statement must be identical.
The names of columns selected in each SELECT statement must be identical.
The output is sorted by the UNION ALL operator.
NULLS are not ignored during duplicate checking

Explicación

Pregunta 62 de 120

1

Which two statements are true about the Automatic Diagnostic Repository (ADR)?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

The ADR base defaults to $ORACLE_HOME/rdbms/admin if neither DIAGNOSTIC_DEST nor ORACLE_BASE is set.
The ADR base defaults to $ORACLE_HOME/dbs if the DIAGNOSTIC_DEST parameter and the ORACLE_BASE environment variable are not set.
It supports diagnostics for Automatic Storage Management (ASM).
It supports diagnostics for Oracle Clusterware.
It is held inside an Oracle database schema

Explicación

Pregunta 63 de 120

1

You want to apply the principle of Least Privilege in all your live databases.
One of your requirements is to revoke unnecessary privileges from all users who have them using Privilege Analysis.

Which three types of analyses can be done using the DBMS_PRIVILEGE_CAPTURE package?

(Choose three).

Selecciona una o más de las siguientes respuestas posibles:

Analysis of all privileges used by all users including administrative users in the database.
Analysis of all privileges used by all users but excluding administrative users in the database.
Analysis of privileges that a user has on their own schema objects that they did not use.
Analysis of privileges that a user has on their own schema objects that they did use.
Analysis of privileges granted directly to a role that are then used by a user who has been granted that role.
Analysis of privileges granted indirectly to a role that are then used by a user who has been granted that role.

Explicación

Pregunta 64 de 120

1

Which three statements are true about undo segments and the use of undo by transactions in an Oracle database instance?

(Choose three).

Selecciona una o más de las siguientes respuestas posibles:

An undo segment may be used by multiple transactions simultaneously.
Undo segments can wrap around to the first extent when a transaction fills the last extend of the undo segment.
Undo segments have a minimum of three extents.
Undo segments can extend when a transaction fills the last extent of the undo segment.
A single transaction may use multiple undo segments simultaneously.
Undo segments must be stored in a BIGFILE tablespace.
Undo segments must be stored in a SMALLFILE tablespace

Explicación

Pregunta 65 de 120

1

Which two statements are true about Enterprise Manager Database Express?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

It is available only when the database is open.
It can be used to perform database recovery.
The same port number can be used for Database Express configurations for databases on different hosts.
It can be used to switch a database into ARCHIVELOGMODE.
The same port number can be used for multiple Database Express configurations for multiple databases on the same host

Explicación

Pregunta 66 de 120

1

Table EMPLOYEES contains columns including EMPLOYEE_ID, JOB_ID and SALARY.
Only the EMPLOYEE_ID column is indexed.
Rows exist for employees 100 and 200.

Examine this statement:
UPDATE employees
SET (job_id, salary) =
(SELECT job_id, salary
FROM employees
WHERE employee_id = 200)
WHERE employee_id = 100;

Which two statements are true?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

Employee 100 will have SALARY set to the same value as the SALARY of employee 200.
Employee 200 will have JOB_ID set to the same value as the JOB_ID of employee 100.
Employee 200 will have SALARY set to the same value as the SALARY of employee 100.
Employee 100 will have JOB_ID set to the same value as the JOB_ID of employee 200.
Employees 100 and 200 will have the same JOB_ID as before the update command.
Employees 100 and 200 will have the same SALARY as before the update command.

Explicación

Pregunta 67 de 120

1

Which two are true about a SQL statement using SET operators such as UNION?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

The data type group of each column returned by the second query must match the data type of the corresponding column returned by the first query.
The number, but not names, of columns must be identical for all SELECT statements in the query.
The data type of each column returned by the second query must exactly match the data type of the corresponding column returned by the first query.
The names and number of columns must be identical for all SELECT statements in the query.
The data type of each column returned by the second query must be implicitly convertible to the data type of the corresponding column returned by the first query.

Explicación

Pregunta 68 de 120

1

Which three statements are true about time zones, date data types, and timestamp data types in an Oracle database?

(Choose three).

Selecciona una o más de las siguientes respuestas posibles:

The CURRENT_TIMESTAMP function returns data without time zone information.
A TIMESTAMP WITH LOCAL TIMEZONE data type column is stored in the database using the time zone of the session that inserted the row.
A TIMESTAMP data type column contains information about year, month, and day.
The DBTIMEZONE function can return an offset from Universal Coordinated Time (UTC).
The SESSIONTIMEZONE function can return an offset from Universal Coordinated Time (UTC)

Explicación

Pregunta 69 de 120

1

Which three statements are true about inner and outer joins?

(Choose three).

Selecciona una o más de las siguientes respuestas posibles:

A full outer join returns matched and unmatched rows.
An inner join returns matched rows.
Outer joins can only be used between two tables per query.
A full outer join must use Oracle syntax.
Outer joins can be used when there are multiple join conditions on two tables.
A left or right outer join returns only unmatched rows

Explicación

Pregunta 70 de 120

1

Examine this description of the TRANSACTIONS table:
Name Null? Type
-------------------------------------------------------------------------------
TRANSACTION_ID NOT NULL VARCHAR2(6)
TRANSACTION_DATE DATE
AMOUNT NUMBER(10,2)
CUSTOMER_ID VARCHAR2(6)

Which two SQL statements execute successfully?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

SELECT customer_id AS "CUSTOMER-ID", transaction_date AS DATE, amount + 100 "DUES" FROM transactions;
SELECT customer_id AS "CUSTOMER-ID", transaction_date AS "DATE", amount + 100 DUES FROM transactions;
SELECT customer_id AS CUSTOMER-ID, transaction_date AS TRANS_DATE, amount + 100 "DUES AMOUNT" FROM transactions;
SELECT customer_id CUSTID, transaction_date TRANS_DATE, amount + 100 DUES FROM transactions;
SELECT customer_id AS 'CUSTOMER-ID', transaction_date AS DATE, amount + 100 'DUES AMOUNT' FROM transactions;

Explicación

Pregunta 71 de 120

1

The CUSTOMERS table has a CUST_CREDIT_LIMIT column of data type NUMBER.
Which two queries execute successfully?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

SELECT NVL(cust_credit_limit * .15, 'Not Available') FROM customers;
SELECT NVL2(cust_credit_limit * .15, 'Not Available') FROM customers;
SELECT NVL(TO_CHAR(cust_credit_limit * .15), 'Not Available') FROM customers;
SELECT TO_CHAR(NVL(cust_credit_limit * .15, 'Not Available')) FROM customers;
SELECT NVL2(cust_credit_limit, TO_CHAR(cust_credit_limit * .15), 'Not Available') FROM customers;

Explicación

Pregunta 72 de 120

1

Which statement is true about aggregate functions?

Selecciona una de las siguientes respuestas posibles:

Aggregate functions can be nested to any number of levels.
The AVG function implicitly converts NULLS to zero.
Aggregate functions can be used in any clause of a SELECT statement.
The MAX and MIN functions can be used on columns with character data types.

Explicación

Pregunta 73 de 120

1

Your database instance was shut down normally and then started in NOMOUNT state. You then execute this command:
ALTER DATABASE MOUNT;

Which two actions are performed?
(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

The online redo logs are opened.
The online data files are opened.
The alert log records the execution details.
The Oracle background processes are started.
The initialization parameter file is read.
The control file is read.

Explicación

Pregunta 74 de 120

1

Which two are true about shrinking a segment online?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

It is not possible to shrink either indexes or Index Organized Tables (IOTs).
It always eliminates all migrated rows if any exist in the table.
To shrink a table it must have a PRIMARY KEY constraint.
To shrink a table it must have a UNIQUE KEY constraint.
To shrink a table it must have row movement enabled
It must be in a tablespace that uses Automatic Segment Space Management (ASSM)

Explicación

Pregunta 75 de 120

1

Examine these commands:
[oracle@host01 ~]$ sqlplus u1/oracle
SQL> SELECT * FROM emp;
ENO ENAME DN
--------------------------------
1 Alan 2
2 Ben 2

SQL> exit

[oracle@host01 ~] cat emp.dat
3,Culr,4
4,Bob,4

[oracle@host01 ~] sqlldr u01/oracle TABLE=emp

Which two statements are true about the sqlldr execution?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

It overwrites data in EMP with data in EMP.DAT
It uses the database buffer cache to load data.
It generates a log that contains control file entries, which can be used with normal SQL*Loader operations.
It generates a sql script that it uses to load data from EMP.DAT to EMP
It appends data from EMP.DAT to EMP

Explicación

Pregunta 76 de 120

1

A script abc.sql must be executed to perform a job.

A database user HR, who is defined in this database, executes this command:
$ sqlplus hr/hr@orcl @abc.sql

What will happen upon execution?

Selecciona una de las siguientes respuestas posibles:

The command succeeds and HR will be connected to the orcl and abc.sql databases.
The command succeeds and HR will be connected to the orcl database instance, and the abc.sql script will be executed.
The command fails because the script must refer to the full path name.
The command fails and reports an error because @ is used twice.

Explicación

Pregunta 77 de 120

1

Which three statements are true regarding indexes?

(Choose three).

Selecciona una o más de las siguientes respuestas posibles:

A UNIQUE index can be altered to be non-unique.
A SELECT statement can access one or more indices without accessing any tables.
A table belonging to one user can have an index that belongs to a different user.
An update to a table can result in updates to any or all of the table's indexes.
When a table is dropped and is moved to the RECYCLE BIN, all indexes built on that table are permanently dropped.
An update to a table can result in no updates to any of the table's indexes.

Explicación

Pregunta 78 de 120

1

Which three statements are true about Oracle synonyms?

(Choose three).

Selecciona una o más de las siguientes respuestas posibles:

A synonym cannot be created for a PL/SQL package.
A synonym can be available to all users.
A SEQUENCE can have a synonym.
A synonym created by one user can refer to an object belonging to another user.
Any user can drop a PUBLIC synonym

Explicación

Pregunta 79 de 120

1

View the Exhibit and examine the structure of the PRODUCTS table.
Which two tasks require subqueries?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

Display the number of products whose PROD_LIST_PRICE is more than the average PROD_LIST_PRICE.
Display suppliers whose PROD_LIST_PRICE is less than 1000.
Display products whose PROD_MIN_PRICE is more than the average PROD_LIST_PRICE of all products, and whose status is orderable.
Display the total number of products supplied by supplier 102 which have a product status of obsolete.
Display the minimum PROD_LIST_PRICE for each product status.

Explicación

Pregunta 80 de 120

1

The SALES_Q1 and USERS tablespaces exist in one of your databases and TEMP is a temporary tablespace.
Segment creation is not deferred.

You execute this command:
CREATE USER sales
IDENTIFIED BY sales_123
DEFAULT TABLESPACE sales_q1
TEMPORARY TABLESPACE temp
QUOTA 5M ON users;

Which three statements must be true so that the SALES user can create tables in SALES_Q1?

(Choose three).

Selecciona una o más de las siguientes respuestas posibles:

The sales user must have a quota on the TEMP tablespace.
The sales user must have a quota on the SALES_Q1 tablespace to hold the initial extends of all tables they plan to create in their schema.
The sales user must have been granted the CREATE SESSION privilege.
The sales user must have their quota on the users tablespace removed.
The sales user must have a quota on the SALES_Q1 tablespace to hold all the rows to be inserted into any table in their schema.
The sales user must have been granted the CREATE TABLE privilege.

Explicación

Pregunta 81 de 120

1

Which three statements are true about table data storage in an Oracle Database?

(Choose three).

Selecciona una o más de las siguientes respuestas posibles:

Data block headers contain their own Data Block Address (DBA).
A table row piece can be chained across several database blocks.
Multiple row pieces from the same row may be stored in different database blocks.
Multiple row pieces from the same row may be stored in the same block.
Data block free space is always contiguous in the middle of the block.
Index block free space is always contiguous in the middle of the block

Explicación

Pregunta 82 de 120

1

Examine the description of the BOOKS table:
Name Null? Type
----------------------------------------------------------------------
TRANSACTION_ID NOT NULL VARCHAR2(6)
TRANSACTION_DATE DATE
AMOUNT NUMBER(10,2)
CUSTOMER_ID VARCHAR2(6)

The table has 100 rows.

Examine this sequence of statements issued in a new session:
INSERT INTO books VALUES ('ADV112', 'Adventures of Tom Sawyer', NULL, NULL);
SAVEPOINT a;
DELETE FROM books;
ROLLBACK TO SAVEPOINT a;
ROLLBACK;

Which two statements are true?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

The second ROLLBACK command does nothing.
The second ROLLBACK command replays the delete.
The first ROLLBACK command restores the 101 rows that were deleted, leaving the inserted row still to be committed.
The second ROLLBACK command undoes the insert.
The first ROLLBACK command restores the 101 rows that were deleted and commits the inserted row

Explicación

Pregunta 83 de 120

1

Which three statements are true about external tables in Oracle 18c and later releases?

(Choose three).

Selecciona una o más de las siguientes respuestas posibles:

External table files can be used for other external tables in a different database.
The ORACLE_LOADER access driver can be used to unload data from a database into an external table.
The ORACLE_DATAPUMP access driver can be used to unload data from a database into an external table.
They cannot be partitioned.
The ORACLE_DATAPUMP access driver can be used to load data into a database from an external table.
They support UPDATEs but not INSERTs and DELETEs

Explicación

Pregunta 84 de 120

1

Which three statements are true about the Oracle join and ANSI join syntax?

(Choose three).

Selecciona una o más de las siguientes respuestas posibles:

The Oracle join syntax supports creation of a Cartesian product of two tables.
The Oracle join syntax performs better than the SQL:1999 compliant ANSI join syntax.
The SQL:1999 compliant ANSI join syntax supports natural joins.
The SQL:1999 compliant ANSI join syntax supports creation of a Cartesian product of two tables.
The Oracle join syntax only supports right outer joins.
The Oracle join syntax supports natural joins.
The Oracle join syntax performs less well than the SQL:1999 compliant ANSI join syntax

Explicación

Pregunta 85 de 120

1

Which two tasks can you perform using DBCA for databases?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

Configure a nonstandard block size for a new database.
Register a new database with an available Enterprise Manager Management server.
Change the standard block size of an existing database.
Configure incremental backups for a new database.
Enable flashback database for an existing database.

Explicación

Pregunta 86 de 120

1

You execute this query:
SELECT TO_CHAR(NEXT_DAY(LAST_DAY(SYSDATE), 'MON'), 'dd "Monday for" fmMonth rrrr') FROM DUAL;

What is the result?

Selecciona una de las siguientes respuestas posibles:

It executes successfully but does not return any result.
It returns the date for the first Monday of the next month.
It generates an error.
It returns the date for the last Monday of the current month

Explicación

Pregunta 87 de 120

1

Examine this command:
CREATE UNDO TABLESPACE undotbs01 DATAFILE 'undotbs_01.dbf'
SIZE 100M AUTOEXTEND ON;

Which two actions must you take to ensure UNDOTBS01 is used as the default UNDO tablespace?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

Add the SEGMENT SPACE MANAGEMENT AUTO clause.
Set UNDO_TABLESPACE to UNDOTBS01.
Add the NOLOGGING clause.
Make certain that the database operates in automatic undo management mode.
Add the ONLINE clause

Explicación

Pregunta 88 de 120

1

Which three statements are true about views in an Oracle database?

(Choose three).

Selecciona una o más de las siguientes respuestas posibles:

Views can be updated without the need to re-grant privileges on the view.
Tables in the defining query of a view must always exist in order to create the view.
The WITH CHECK clause prevents certain rows from being displayed when querying the view.
Data Manipulation Language (DML) can always be used on views.
Inserting one or more rows using a view whose defining query contains a GROUP BY clause will cause an error.
Deleting one or more rows using a view whose defining query contains a GROUP BY clause will cause an error.
The WITH CHECK clause prevents certain rows from being updated or inserted

Explicación

Pregunta 89 de 120

1

You execute this command:
CREATE SMALLFILE TABLESPACE sales DATAFILE '/u01/app/oracle/sales01.dbf
SIZE 5G SEGMENT SPACE MANAGEMENT AUTO;

Which two statements are true about the SALES tablespace?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

It must be smaller than the smallest BIGFILE tablespace.
Free space is managed using freelists.
Any data files added to the tablespace must have a size of 5 gigabytes.
It uses the database default blocksize.
It is a locally managed tablespace.

Explicación

Pregunta 90 de 120

1

In the SALES database, DEFERRED_SEGMENT_CREATION is TRUE.
Examine this command:
SQL> CREATE TABLE T1(c1 INT PRIMARY KEY, c2 CLOB);

Which segment or segments, if any, are created as a result of executing the command?

Selecciona una de las siguientes respuestas posibles:

T1, an index segment for the primary key, a LOB segment, and a lobindex segment.
No segments are created
T1 only
T1 and an index segment created for the primary key only
T1, an index segment for the primary key, and a LOB segment only

Explicación

Pregunta 91 de 120

1

Which three activities are recorded in the database alert log?

(Choose three).

Selecciona una o más de las siguientes respuestas posibles:

Data Definition Language (DDL) statements
Non-default database parameters
Block corruption errors
Deadlock errors
Session logins and logouts

Explicación

Pregunta 92 de 120

1

Which two statements are true about Enterprise Manager (EM) Express?

Selecciona una o más de las siguientes respuestas posibles:

You can use a single instance of EM Express to manage multiple database running on the same server.
EM Express uses a separate repository database to store target database metadata.
By default, EM express is available for a database after database creation using DBCA.
You can shut down a database instance using EM Express.
You cannot start up a database instance using EM Express.

Explicación

Pregunta 93 de 120

1

Examine this SQL statement:
SELECT cust_id, cust_last_name "Last Name"
FROM customers
WHERE country_id = 10
UNION
SELECT cust_id CUST_NO, cust_last_name
FROM customers
WHERE country_id = 30

Identify three ORDER BY clauses, any one of which can complete the query successfully.

(Choose three).

Selecciona una o más de las siguientes respuestas posibles:

ORDER BY "Last Name"
ORDER BY 2, 1
ORDER BY 2, cust_id
ORDER BY CUST_NO
ORDER BY "CUST_NO"

Explicación

Pregunta 94 de 120

1

Which two statements are true about the configuration and use of UNDO_RETENTION with GURANTEED RETENTION?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

UNDO_RETENTION specifies for how long Oracle attempts to keep expired and unexpired UNDO.
UNDO_RETENTION specifies how long all types of UNDO are retained.
Unexpired UNDO is always retained.
Active UNDO is always retained.
UNDO_RETENTION specifies for how long Oracle attempts to keep unexpired UNDO.

Explicación

Pregunta 95 de 120

1

Table ORDER_ITEMS contains columns ORDER_ID, UNIT_PRICE and QUANTITY, of data type NUMBER.
Examine these SQL statements:

Statement 1:
SELECT MAX(unit_price * quantity) 'Maximum Order' FROM order_items;

Statement 2:
SELECT MAX(unit_price * quantity) 'Maximum Order' FROM order_items GROUP BY order_id;

Which two statements are true?

Selecciona una o más de las siguientes respuestas posibles:

Statement 1 returns only one row of output.
Statement 2 returns only one row of output.
Both statements will return NULL if either UNIT_PRICE or QUANTITY contains NULL.
Both the statements give the same output.
Statement 2 may return multiple rows of output.

Explicación

Pregunta 96 de 120

1

Which three files are used by conventional path SQL*Loader when the TABLE option is not specified?

(Choose three).

Selecciona una o más de las siguientes respuestas posibles:

Dump files
Control files
Password files
Bad files
Input files

Explicación

Pregunta 97 de 120

1

Which three statements are true about the naming methods and their features supported by Oracle database used to resolve connection information?

(Choose three).

Selecciona una o más de las siguientes respuestas posibles:

Local Naming requires setting the TNS_ADMIN environment variable on the client side.
A client can connect to an Oracle database instance even if no client side network admin has been configured.
Directory Naming can be used if Connect-Time Failover is required.
Easy Connect supports TCP/IP and SSL.
Local naming can be used if Connect-Time Failover is required.
Directory Naming requires setting the TNS_ADMIN environment variable on the client side.

Explicación

Pregunta 98 de 120

1

Which two statements are true about User Authentication in an Oracle Database?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

Password authentication must be used for system-privileged administrative users.
Password File authentication must be used for system-privileged administrative users.
Operating System authentication may be used for system-privileged administrative users.
Password File authentication is supported for any type of database user.
REMOTE_LOGIN_PASSWORDFILE must be set to exclusive to permit password changes for system-privileged administrative users.

Explicación

Pregunta 99 de 120

1

Which is the default column or columns for sorting output from compound queries using SET operators such as INTERSECT in a SQL statement?

Selecciona una de las siguientes respuestas posibles:

The first NUMBER column in the first SELECT of the compound query.
The first NUMBER or VARCHAR2 column in the last SELECT of the compound query.
The first column in the last SELECT of the compound query.
The first column in the first SELECT of the compound query.
The first VARCHAR2 column in the first SELECT of the compound query.

Explicación

Pregunta 100 de 120

1

Examine the description of the PRODUCT_STATUS table:
Name Null? Type
-----------------------------------------------------------
PROD_ID NOT NULL VARCHAR2(6)
STATUS NOT NULL DATE

The STATUS column contains the values 'IN STOCK' or 'OUT OF STOCK' for each row.

Which two queries will execute successfully?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

SELECT prod_id "CURRENT AVAILABILITY" || q'('s not available)'
FROM product_status WHERE status = 'OUT OF STOCK';
SELECT prod_id q's not available"
FROM product_status WHERE status = 'OUT OF STOCK';
SELECT prod_id || q'('s not available)' 'CURRENT AVAILABILITY'
FROM product_status WHERE status = 'OUT OF STOCK';
SELECT prod_id || q'('s not available)'
FROM product_status WHERE status = 'OUT OF STOCK';
SELECT prod_id || q"'s not available"
FROM product_status WHERE status = 'OUT OF STOCK';
SELECT prod_id || q'('s not available)' "CURRENT AVAILABILITY"
FROM product_status WHERE status = 'OUT OF STOCK';

Explicación

Pregunta 101 de 120

1

Which two statements are true about UNDO and UNDO tablespaces?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

There can be only one UNDO tablespace created in a database.
UNDO segments are owned by SYSTEM.
UNDO segments are owned by SYSBACKUP.
An UNDO tablespace may be owned by only one instance.
An instance will crash if the active undo tablespace is lost.

Explicación

Pregunta 102 de 120

1

You must create a tablespace of non-standard block size in a new file system and plan to use this command:
CREATE TABLESPACE ns_tbs
DATAFILE '/u02/oracle/data/nstbs_f01.dbf'
SIZE 100G
BLOCKSIZE 32K;

The standard block size is 8k but other non-standard block sizes will also be used.

Which two are requirements for this command to succeed?
(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

DB_32K_CACHE_SIZE must be less than DB_CACHE_SIZE.
DB_32K_CACHE_SIZE must be set to a value that can be accommodated in the SGA.
DB_32K_CACHE_SIZE should be set to a value greater than DB_CACHE_SIZE.
The /u02 file system must have at least 100g space for the datafile.
The operating system must use a 32k block size.
DB_CACHE_SIZE must be set to a size that is smaller than DB_32K_CACHE_SIZE.

Explicación

Pregunta 103 de 120

1

Examine the description of the PRODUCTS table:
Name Null? Type
------------------------------------------------------------------------
PROD_ID NOT NULL NUMBER
PROD_NAME VARCHAR2(40)
COST NUMBER(8,2)
RELEASE_DATE DATE

Which query is valid?

Selecciona una de las siguientes respuestas posibles:

SELECT prod_id, release_date, SUM(cost) FROM products GROUP BY prod_id;
SELECT prod_id, release_date, SUM(cost) FROM products GROUP BY prod_id, release_date;
SELECT prod_id, AVG(MAX(cost)) FROM products GROUP BY prod_id;
SELECT prod_id, MAX(AVG(cost)) FROM products GROUP BY prod_id;

Explicación

Pregunta 104 de 120

1

Which two statements are true about the Oracle Data Dictionary?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

All data dictionary view join base tables to dynamic performance views.
Data dictionary base tables can be queried directly.
It is owned by the SYS user.
It is owned by the SYSTEM user.
Data dictionary views are always created with queries that join two or more base tables.

Explicación

Pregunta 105 de 120

1

Which two Oracle database space management features require the use of locally managed tablespaces?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

Automatic data file extension (AUTOEXTEND).
Server-generated tablespace space alerts.
Online segment shrink.
Free space management with bitmaps.
Oracle Managed Files (OMF)

Explicación

Pregunta 106 de 120

1

Which three statements are true about connection strings and service names used to connect to an Oracle database instance?

(Choose three).

Selecciona una o más de las siguientes respuestas posibles:

A connection string must include the SID of a database instance.
A connection string including a service name must be defined in the tnsnames.ora file.
A single database instance can support connections for multiple service names.
A single connection string can refer to multiple database instances.
A service name is created by a listener.
Different connection strings in the same tnsnames.ora file can contain the same service name, host and port parameters.

Explicación

Pregunta 107 de 120

1

Which three statements are true about using SQL*Plus?

(Choose three).

Selecciona una o más de las siguientes respuestas posibles:

It has both command-line and graphical user interfaces (GUI).
It must be downloaded from the Oracle Technology Network (OTN).
It can run Recovery Manager (RMAN) commands.
It has its own commands that are separate from any SQL statements.
It can run scripts entered at the SQL prompt.
It can run scripts passed to it by a shell script.

Explicación

Pregunta 108 de 120

1

The orders table has a column ORDER_DATE of data type DATE.
The default display format for a date is DD-MON-RR.

Which two WHERE conditions demonstrate the correct usage of conversion functions?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

WHERE order_date > TO_DATE(ADD_MONTHS(SYSDATE, 6), 'MON DD YYYY')
WHERE order_date > TO DATE('JUL 10 2018', 'MON DD YYYY')
WHERE TO_CHAR(order date, 'MON DD YYYY') = 'JAN 20 2019'
WHERE order_date > TO_CHAR(ADD_MONTHS(SYSDATE, 6), 'MON DD YYYY')
WHERE order_date IN (TO_DATE('Oct 21 2018', 'Mon DD YYYY'), TO_CHAR('Nov 21 2018', 'Mon DD YYYY'))

Explicación

Pregunta 109 de 120

1

Which three statements are true about the Automatic Diagnostic Repository (ADR)?

(Choose three).

Selecciona una o más de las siguientes respuestas posibles:

It can be used for problem diagnosis of a database when that database's instance is down.
The ADR base is specified in the DIAGNIOSTIC_DEST database parameter.
It is held inside an Oracle database schema.
It is a file-based repository held outside any database.
It is only used for Oracle Database diagnostic information.

Explicación

Pregunta 110 de 120

1

Which two statements are true about a self join?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

It can be an inner join.
It can be a left outer join.
It must be an equijoin.
The join key column must have an index.
It must be a full outer join.

Explicación

Pregunta 111 de 120

1

Which statement is true about database links?

Selecciona una de las siguientes respuestas posibles:

Private database link creation requires the same user to exist in both the local and the remote databases.
A database link created in a database allows a connection from that database's instance to the target database's instance, but not vice versa.
A public database link can be used by a user connected to the local database instance to connect to any schema in the remote database instance.
A public database link can be created only by SYS.
A database link can be created only between two Oracle databases.

Explicación

Pregunta 112 de 120

1

Which two queries execute successfully?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

SELECT NULLIF(NULL, 100) FROM DUAL;
SELECT NULLIF(100, 'A') FROM DUAL;
SELECT COALESCE(100, 'A') FROM DUAL;
SELECT COALESCE(100, NULL, 200) FROM DUAL;
SELECT NULLIF(100, 100) FROM DUAL;

Explicación

Pregunta 113 de 120

1

Which three statements are true about data block storage in an Oracle Database?

(Choose three).

Selecciona una o más de las siguientes respuestas posibles:

An index block can contain row data.
A data block header is of a fixed length.
Row data is stored starting at the end of the block.
A table block must always contain row data.
A block header contains a row directory pointing to all rows in the block.

Explicación

Pregunta 114 de 120

1

Which two are benefits of external tables?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

They support DELETES which transparently deletes records in the file system as if they were table rows.
They can be queried, transformed, and joined with other tables without having to load the data first.
They support UPDATES which transparently updates records in the file system as if they were table rows.
The results of a complex join or aggregating function or both can be unloaded to a file for transportation to another database.
They can be queried while the database is in the MOUNT state like dynamic performance views.

Explicación

Pregunta 115 de 120

1

Examine the description of the MEMBERS table:
Name Null? Type
----------------------------------------------------
MEMBER_ID NOT NULL VARCHAR2(6)
FIRST_NAME VARCHAR2(50)
LAST_NAME NOT NULL VARCHAR2(50)
ADDRESS VARCHAR2(50)
CITY VARCHAR2(25)

Examine the partial query:
SELECT city, last_name LNAME FROM members ...;

You want to display all cities that contain the string an. The cities must be returned in ascending order, with the last names further sorted in descending order.

Which two clauses must you add to the query?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

ORDER BY 1, 2
WHERE city = '%AN%'
WHERE city LIKE '%AN%'
ORDER BY last_name DESC, city ASC
WHERE city IN ('%AN%')
ORDER BY 1, LNAME DESC

Explicación

Pregunta 116 de 120

1

Which three statements are true about sequences in a single instance Oracle database?

(Choose three).

Selecciona una o más de las siguientes respuestas posibles:

Sequences can always have gaps.
Two or more tables cannot have keys generated from the same sequence.
A sequence's unallocated cached values are lost if the instance shuts down.
A sequence can issue duplicate values.
A sequence can only be dropped by a DBA.
A sequence number that was allocated can be rolled back if a transaction fails.

Explicación

Pregunta 117 de 120

1

Your database instance is started with an SPFILE.
A PFILE is also available.

You execute this command:
ALTER SYSTEM SET DB_CACHE_SIZE=100K;

Where is the value changed?

Selecciona una de las siguientes respuestas posibles:

In the SPFILE, PFILE, and memory
In the SPFILE and in memory
Only in the SPFILE
Only in memory
In the SPFILE and PFILE

Explicación

Pregunta 118 de 120

1

You want to apply the principle of Least Privilege in all your live databases.
One of your requirements is to revoke unnecessary privileges from all users who have them using Privilege Analysis.

Which two are types of analyses can be done using the DBMS_PRIVILEGE_CAPTURE package?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

Analysis of privileges that a user has on other schema’s objects.
Analysis of privileges that a user has on their own schema objects.
Analysis of all privileges used by the sys user.
Analysis of privileges granted indirectly to a role that are then used by a user who has been granted that role.
Analysis of privileges granted directly to a role that are then used by a user who has been granted that role.

Explicación

Pregunta 119 de 120

1

Examine the description of the SALES table:
Name Null? Type
--------------------------------------------------------------
PRODUCT_ID NOT NULL NUMBER(10)
CUSTOMER_ID NOT NULL NUMBER(10)
TIME_ID NOT NULL DATE
CHANNEL_ID NOT NULL NUMBER(5)
PROMO_ID NOT NULL NUMBER(5)
QUANTITY_SOLD NOT NULL NUMBER(10,2)
PRICE NUMBER(10,2)
AMOUNT_SOLD NOT NULL NUMBER(10,2)

The SALES table has 55,000 rows.

Examine this statement:
CREATE TABLE sales1 (prod_id, cust_id, quantity_sold, price)
AS
SELECT product_id, customer_id, quantity_sold, price
FROM sales
WHERE 1 = 1;

Which two statements are true?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

SALES1 is created with l row.
SALES1 is created with no rows.
SALES1 has primary KEY and UNIQUE constraints on any selected columns which had those constraints in the SALES table.
SALES1 has NOT NULL constraints on any selected columns which had those constraints in the SALES table.
SALES1 is created with 55,000 rows.

Explicación

Pregunta 120 de 120

1

Which three statements are true about performing Data Manipulation Language (DML) operations on a view with no INSTEAD OF triggers defined?

(Choose three).

Selecciona una o más de las siguientes respuestas posibles:

Views cannot be used to query rows from an underlying table if the table has a PRIMARY KEY and the PRIMARY KEY columns are not referenced in the defining query of the view.
The WITH CHECK clause has no effect when deleting rows from the underlying table through the view.
Delete statements can always be done on a table through a view.
Views cannot be used to add or modify rows in an underlying table if the defining query of the view contains the DISTINCT keyword.
Views cannot be used to add rows to an underlying table if the table has columns with NOT NULL constraints lacking default values which are not referenced in the defining query of the view.
Insert statements can always be done on a table through a view.

Explicación

Pregunta 121 de 120

1

Which three statements are true about indexes and their administration in an Oracle database?

(Choose three).

Selecciona una o más de las siguientes respuestas posibles:

An index can be created as part of a CREATE TABLE statement.
If a query filters on an indexed column, then it will always be used during execution of the query.
A descending index is a type of function-based index.
A DROP INDEX statement always prevents updates to the table during the drop operation.
A UNIQUE and non-unique index can be created on the same table column.
An INVINSIBLE INDEX is not maintained when Data Manipulation Language (DML) is performed on its underlying table.

Explicación

Pregunta 122 de 120

1

Which three actions are ways to apply the principle of least privilege?

(Choose three).

Selecciona una o más de las siguientes respuestas posibles:

Setting the O7_DICTIONARY_ACCESSIBILITY parameter to true.
Setting the REMOTE_OS_AUTHENT parameter to true.
Revoking execute privilege on UTL_SMTP, UTL_TCP, UTL_HTTP, and UTL_FILE from the SYSTEM user,
Enabling Unified Auditing.
Using Access Control Lists (ACLs).
Revoking execute privilege on UTL_SMTP, UTL_TCP, UTL_HTTP, and UTL_FILE from the public user

Explicación

Pregunta 123 de 120

1

The STORES table has a column START_DATE of data type DATE, containing the date the row was inserted.
You only want to display details of rows where START_DATE is within the last 25 months.

Which WHERE clause can be used?

Selecciona una de las siguientes respuestas posibles:

WHERE ADD_MONTHS(start_date, 25) <= SYSDATE
WHERE MONTHS_BETWEEN(start_date, SYSDATE) <= 25
WHERE MONTHS_BETWEEN(SYSDATE, start_date) <=25
WHERE TO_NUMBER(start date - SYSDATE) <= 25

Explicación

Pregunta 124 de 120

1

Examine the description of the BOOKS_TRANSACTIONS table:
Name Null? Type
-------------------------------------------------------------------------
TRANSACTION_ID NOT NULL VARCHAR2(6)
TRANSACTION_TYPE VARCHAR2(3)
BORROWED_DATE DATE
BOOK_ID VARCHAR2(6)
MEMBER_ID VARCHAR2(6)

Examine this partial SQL statement:
SELECT * FROM books_transactions

Which two WHERE conditions give the same result?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

WHERE borrowed_date = SYSDATE AND (transaction_type = 'RM' AND member_id = 'A101' OR member_id = 'A102');
WHERE borrowed_date = SYSDATE AND transaction_type = 'RM' OR member_id IN ('A101', 'A102');
WHERE borrowed_date = SYSDATE AND (transaction_type = 'RM' AND (member_id = 'A101' OR member_id = 'A102'));
WHERE borrowed_date = SYSDATE AND (transaction_type = 'RM' OR member_id IN ('A101', 'A102'));
WHERE (borrowed_date = SYSDATE AND transaction_type - 'RM') OR member_id IN ('A101', VA102');

Explicación

Pregunta 125 de 120

1

Which two statements are true about views?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

The WITH CHECK clause prevents certain rows from being updated or inserted in the underlying table through the view.
The WITH CHECK clause prevents certain rows from being displayed when querying the view.
Views can be updated without the need to re-grant privileges on the view.
A view must only refer to tables in its defining query.
Views can be indexed.

Explicación

Pregunta 126 de 120

1

Which compression method is recommended for Direct-Path Insert operations?

Selecciona una de las siguientes respuestas posibles:

ROW STORE COMPRESS BASIC
ROW STORE COMPRESS ADVANCED
COLUMN STORE COMPRESS ADVANCED
COLUMN STORE COMPRESS BASIC

Explicación

Pregunta 127 de 120

1

Which three statements are true about Deferred Segment Creation in Oracle databases?

(Choose three).

Selecciona una o más de las siguientes respuestas posibles:

It is supported for Index Organized Tables (IOTs) contained in locally managed tablespaces.
It is the default behavior for tables and indexes.
Sessions may dynamically switch back and forth from DEFERRED to IMMEDIATE segment creation.
Indexes inherit the DEFERRED to IMMEDIATE segment creation attribute from their parent table
It is supported for SYS-owned tables contained in locally managed tablespaces.

Explicación

Pregunta 128 de 120

1

Examine these statements executed in a single Oracle session:
CREATE TABLE product (pcode NUMBER(2), pname VARCHAR2(20));

INSERT INTO product VALUES(1,'pen');
INSERT INTO product VALUES(2,'pencil');
INSERT INTO product VALUES(3,'fountain pen');

SAVEPOINT a;

UPDATE product SET pcode = 10 WHERE pcode = 1;

COMMIT;

DELETE FROM product WHERE pcode = 2;

SAVEPOINT b;

UPDATE product SET pcode = 30 WHERE pcode = 3;

SAVEPOINT c;

DELETE FROM product WHERE pcode = 10;

ROLLBACK TO SAVEPOINT b;

COMMIT;

Which three statements are true?

(Choose three).

Selecciona una o más de las siguientes respuestas posibles:

The code for pen is 10.
There is no row containing fountain pen.
There is no row containing pen.
The code for fountain pen is 3.
The code for pen is 1.
There is no row containing pencil.

Explicación

Pregunta 129 de 120

1

Examine the description of the SALES1 table:
Name Null? Type
----------------------------------------------------
SALES_ID NOT NULL NUMBER
STORE_ID NOT NULL NUMBER
ITEMS_ID NUMBER
QUANTITY NUMBER
SALES_DATE DATE

SALES2 is a table with the same description as SALES1.

Some sales data is contained erroneously in both tables.

You must display rows from SALES1 and SALES2 and wish to see the duplicates too.

Which set operator generates the required output?

Selecciona una de las siguientes respuestas posibles:

UNION ALL
SUBTRACT
MINUS
UNION
INTERSECT

Explicación

Pregunta 130 de 120

1

In the promotions table, the PROMO_BEGIN_DATE column is of data type DATE and the default date format is DD-MON-RR.

Which two statements are true about expressions using PROMO_BEGIN_DATE contained in a query?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

TO_NUMBER(PROMO_BEGIN_DATE) - 5 will return a number.
PROMO_BEGIN_DATE - SYSDATE will return an error.
PROMO_BEGIN_DATE - SYSDATE will return a number.
PROMO_BEGIN_DATE - 5 will return a date.
TO_DATE(PROMO_BEGIN_DATE * 5) will return a date.

Explicación

Pregunta 131 de 120

1

Which two statements are true regarding indexes?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

A non-unique index can be altered to be unique.
An update to a table can result in no updates to any of the table's indexes.
The RECYCLE BIN never contains indexes.
An update to a table can result in updates to any or all of the table's indexes.
A table belonging to one user cannot have an index that belongs to a different user.

Explicación

Pregunta 132 de 120

1

Which three statements are true regarding single row subqueries?

(Choose three).

Selecciona una o más de las siguientes respuestas posibles:

A SQL statement may have multiple single row subquery blocks.
They can be used in the WHERE clause.
They must be placed on the left side of the comparison operator or condition.
They can be used in the HAVING clause.
They must be placed on the right side of the comparison operator or condition.
They must return a row to prevent errors in the SQL statement.

Explicación

Pregunta 133 de 120

1

Which two statements are true about Oracle synonyms?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

Any user can create a public synonym.
A synonym has an object number.
A synonym can be created on an object in a package.
All private synonym names must be unique in the database.
A synonym can have a synonym.

Explicación

Pregunta 134 de 120

1

Examine this command:
SQL> ALTER TABLE ORDERS SHRINK SPACE COMPACT

Which two statements are true?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

The SHRINK operation causes rows to be moved to empty space starting from the beginning of the ORDERS segment.
Queries and DML statements are allowed on ORDERS while the SHRINK is executing.
Dependent indexes become UNUSABLE.
Only queries are allowed on ORDERS while the shrink is executing.
The high-water mark (HWM) of ORDERS is adjusted.
The SHRINK operation causes rows to be moved to empty space starting toward the end of the ORDERS segment.

Explicación

Pregunta 135 de 120

1

The sales table has columns PROD_ID and QUANTITY_SOLD of data type number.

Which two queries execute successfully?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

SELECT COUNT(prod_id) FROM sales WHERE quantity_sold > 55000 GROUP BY prod_id;
SELECT COUNT(prod_id) FROM sales GROUP BY prod_id WHERE quantity_sold > 55000;
SELECT prod_id FROM sales WHERE quantity_sold > 55000 AND COUNT(*) > 10 GROUP BY COUNT(*) > 10;
SELECT prod_id FROM sales WHERE quantity_sold > 55000 GROUP BY proa_id HAVING COUNT(*) > 10;
SELECT prcd_id FROM sales WHERE quantity_sold > 55000 AND COUNT (*) > 10 GROUP BY prod_id HAVING COUNT(*) > 10;

Explicación

Pregunta 136 de 120

1

Examine the description of the PRODUCT_DETAILS table:
Name Null? Type
-------------------------------------------------------------------------
PRODUCT_ID NOT NULL NUMBER(2)
PRODUCT_NAME NOT NULL VARCHAR2(25)
PRODUCT_PRICE NUMBER(8,2)
EXPIRY_DATE DATE

Which two statements are true?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

PRODUCT_ID can be assigned the PRIMARY KEY constraint.
EXPIRY_DATE cannot be used in arithmetic expressions.
PRODUCT_NAME cannot contain duplicate values.
EXPIRY_DATE contains the SYSDATE by default if no date is assigned to it.
PRODUCT_PRICE can be used in an arithmetic expression even if it has no value stored in it.
PRODUCT_PRICE contains the value zero by default if no value is assigned to it.

Explicación

Pregunta 137 de 120

1

Which two statements are true about INTERVAL data types?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

INTERVAL DAY TO SECOND columns support fractions of seconds.
The YEAR field in an INTERVAL YEAR TO MONTH column must be a positive value.
The value in an INTERVAL DAY TO SECOND column can be copied into an INTERVAL YEAR TO MONTH column.
INTERVAL YEAR TO MONTH columns only support monthly intervals within a range of years.
INTERVAL YEAR TO MONTH columns only support monthly intervals within a single year.
INTERVAL YEAR TO MONTH support yearly intervals.

Explicación

Pregunta 138 de 120

1

Examine the description of the EMPLOYEES table:
Name Null? Type
----------------------------------------------------
EMP_ID NOT NULL NUMBER
EMP_NAME VARCHAR2(10)
DEPT_ID NUMBER(2)
SALARY NUMBER(8,2)
JOIN_DATE DATE

NLS_DATE_FORMAT is set to DD-MON-YY.

Which query requires explicit data type conversion?

Selecciona una de las siguientes respuestas posibles:

SELECT join_date FROM employees WHERE join_date > '10-02-2018';
SELECT join_date + '20' FROM employees;
SELECT salary + '120.50' FROM employees;
SELECT SUBSTR(join_date, 1, 2) - 10 FROM employees;
SELECT join_date || ' ' || salary FROM employees;

Explicación

Pregunta 139 de 120

1

You start your database instance in NOMOUNT state.

Which two actions are performed?
(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

SYS can access the database.
The consistency of the database is checked.
The control files are opened.
All required background processes are started.
Memory is allocated for the SGA.

Explicación

Pregunta 140 de 120

1

Which two statements are true about the PMON background process?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

It registers database services with all local and remote listeners known to the database instance.
It frees unused temporary segments.
It rolls back transactions when a process fails.
It records checkpoint information in the control file.
It frees resources held by abnormally terminated processes.

Explicación

Pregunta 141 de 120

1

Which two statements are true about the Oracle join and ANSI join syntax?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

The Oracle join syntax performs less well than the SQL:1999 compliant ANSI join syntax.
The Oracle join syntax lacks the ability to do outer joins.
The SQL:1999 compliant ANSI join syntax supports creation of a Cartesian product of two tables.
The Oracle join syntax supports creation of a Cartesian product of two tables.
The Oracle join syntax performs better than the SQL:1999 compliant ANSI join syntax.

Explicación

Pregunta 142 de 120

1

Which two statements are true about single row functions?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

CEIL : can be used for positive and negative numbers.
MOD : returns the remainder of a division operation.
CONCAT : can be used to combine any number of values.
FLOOR : returns the smallest integer greater than or equal to a specified number.
TRUNC : can be used only with NUMBER data types.

Explicación

Pregunta 143 de 120

1

What is true about non-equijoin statement performance?

Selecciona una de las siguientes respuestas posibles:

The BETWEEN condition used with a non-equijoin always performs better than when using the >= and <= conditions.
The BETWEEN condition used with a non-equijoin sometimes performs better than using the >= and <= conditions.
The Oracle join syntax performs better than the SQL:1999 compliant ANSI join syntax.
The Oracle join syntax performs less well than the SQL:1999 compliant ANSI join syntax.
The join syntax used makes no difference to performance.

Explicación

Pregunta 144 de 120

1

Examine the description of the CUSTOMERS table:
Name Null? Type
----------------------------------------------------
CUST_ID NOT NULL VARCHAR2(2)
CUST_LAST_NAME VARCHAR2(30)
CITY VARCHAR2(10)
CUST_CREDIT_LIMIT NUMBER(6,2)

You need to display last names and credit limits of all customers whose last name starts with A or B in lower or upper case, and whose credit limit is below 1000.

Examine this partial query:
SELECT cust_last_name, cust_credit_limit FROM customers

Which two WHERE conditions give the required result?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

WHERE (UPPER(cust_last_name) LIKE 'A%' OR UPPER(cust_last_name) LIKE 'B%')
AND ROUND(cust_credit_limit) < 1000;
WHERE (INITCAP(cust_last_name) LIKE 'A%' OR INITCAP(cust_last_name) LIKE 'B%')
AND cust_credit_limit < 1000;
WHERE UPPER(cust_last_name) IN ('A%', 'B%')
AND cust_credit_limit < 1000;
WHERE (UPPER(cust_last_name) LIKE INITCAP('A') OR UPPER(cust_last_name) LIKE INITCAP('B'))
AND ROUND(cust_credit_limit) < ROUND(1000);
WHERE UPPER(cust_last_name) BETWEEN UPPER('A%' AND 'B%')
AND ROUND(cust_credit_limit) < 1000;

Explicación

Pregunta 145 de 120

1

Which two statements are true about substitution variables?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

A substitution variable can be used with any clause in a SELECT statement.
A substitution variable used to prompt for a column name must be enclosed in double quotation marks.
A substitution variable used to prompt for a column name must be enclosed in single quotation marks.
A substitution variable prefixed with & always prompts only once for a value in a session.
A substitution variable can be used only in a SELECT statement.
A substitution variable prefixed with && prompts only once for a value in a session unless it is set to undefined in the session.

Explicación

Pregunta 146 de 120

1

The CUSTOMERS table has a CUST_LAST_NAME column of data type VARCHAR2.
The table has two rows whose CUST_LAST_NAME values are Anderson and Ausson.

Which query produces output for CUST_LAST_NAME containing Oder for the first row and Aus for the second?

Selecciona una de las siguientes respuestas posibles:

SELECT REPLACE(SUBSTR(cust_last_name, -3), 'An', 'O') FROM customers;
SELECT REPLACE(TRIM(TRAILING 'son' FROM cust_last_name), 'An', 'O') FROM customers;
SELECT INITCAP(REPLACE(TRIM('son' FROM cust_last_name), 'An', 'O')) FROM customers;
SELECT REPLACE(REPLACE(cust_last_name, 'son', ''), 'An', 'O') FROM customers;

Explicación

Pregunta 147 de 120

1

Which two statements are true about GLOBAL TEMPORARY TABLES?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

GLOBAL TEMPORARY TABLE space allocation occurs at session start.
GLOBAL TEMPORARY TABLE rows inserted by a session are available to any other session whose user has been granted select on the table.
A TRUNCATE command issued in a session causes all news in a GLOBAL TEMPORARY TABLE for the issuing session to be deleted.
A GLOBAL TEMPORARY TABLE 's definition is available to multiple sessions.
A DELETE command on a GLOBAL TEMPORARY TABLE cannot be rolled back.

Explicación

Pregunta 148 de 120

1

Which three statements are true about Resumable Space Allocation in Oracle databases?

(Choose three).

Selecciona una o más de las siguientes respuestas posibles:

A user's session may be suspended and resumed multiple times.
The AFTER SUSPEND event trigger can itself be suspended due to space conditions.
All sessions must have the same timeout value when waiting for resumable space allocations.
Resumable space allocation is only possible with locally managed tablespaces.
A user's session may be suspended even if the user has the UNLTMTTED TABLESPACE system privilege.
Resumable space allocation may be enabled for some sessions and not others.

Explicación

Pregunta 149 de 120

1

Examine the description of the PRODUCT_INFORMATION table:
Name Null? Type
--------------------------------------------------------------------
PROD_ID NOT NULL NUMBER(2)
PROD_NAME VARCHAR2(10)
LIST_PRICE NUMBER(6,2)

Which query retrieves the number of products with a null list price?

Selecciona una de las siguientes respuestas posibles:

SELECT COUNT(list_price) FROM product_information WHERE list_price IS NULL;
SELECT COUNT(NVL(list_price, 0)) FROM product_information WHERE list_price IS NULL;
SELECT COUNT(DISTINCT list price) FROM product_information WHERE list_price IS NULL;
SELECT COUNT(list_price) FROM product_information WHERE list_price = NULL;

Explicación

Pregunta 150 de 120

1

Examine the description of the CUSTOMERS table:
Name Null? Type
--------------------------------------------------------------------------------
CUSTINO NOT NULL NUMBER(3)
CUSTNAME NOT NULL VARCHAR2(25)
CUSTADDRESS VARCHAR2(35)
CUST_CREDIT_LIMIT NUMBER(5)

CUSTINO is the PRIMARY KEY

You must determine if any customers' details have been entered more than once using a different CUSTINO, by listing all duplicate names.

Which two methods can you use to get the required result?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

Subquery
Self join
LEFT OUTER JOIN with self join
RIGHT OUTER JOIN with self join
FULL OUTER JOIN with self join

Explicación

Pregunta 151 de 120

1

Which two statements are true about undo segments and the use of undo by transactions in an Oracle database instance?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

Undo segments can be stored in the SYSAUX tablespace.
Undo segments can wrap around to the first extent when a transaction fills the last extend of the undo segment.
A single transaction may use multiple undo segments simultaneously.
Undo segments can extend when a transaction fills the last extent of the undo segment.
Undo segments can be stored in the SYSTEM tablespace.

Explicación

Pregunta 152 de 120

1

DATADIR1 and DATATDIR2 are database directory objects.

Examine this command:
[oracle@host01 ~] expdp system/oracle \
> FULL=y \
> DUMPFILE=datadir1:full$U.dmp,datadir2:full2$U.dmp
> FILESIZE=2G \
> PARALLEL=4 \
> LOGFILE=datadir1:/expfull.log \
> JOB_NAME=expfull

Which two statements are true about the expdp operation?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

It fails if the total size of the dump file is more than 2GB.
It starts only when four worker processes are available.
It creates a master table to store details of the export operation.
It creates dump files for the entire database.
It creates dump files only for objects in the SYSTEM schema.

Explicación

Pregunta 153 de 120

1

Which two statements are true about Enterprise Manager Database Express?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

It is available only when the database is open.
It can be used to perform database recovery when the database is opened.
The same port number can be used for Database Express configurations for databases on different hosts.
It can be used to switch a database into ARCHIVELOGMODE.
The same port number can be used for multiple Database Express configurations for multiple databases on the same host.
It can be used to perform database recovery when the database is mounted

Explicación

Pregunta 154 de 120

1

Examine these SQL statements which execute successfully:
CREATE TABLE emp
(emg_no NUMBER (2) CONSTRAINT emp_emp_no_pk PRIMARY KEY,
ename VARCHAR2 (15),
salary NUMBER (8,2),
mgr_no NUMBER (2));

ALTER TABLE emp ADD CONSTRAINT emp_mgr_fk
FOREIGN KEY (mgr_no)
REFERENCES emp (emp_no)
ON DELETE SET NULL;

ALTER TABLE emp
DISABLE CONSTRAINT emp_emp_no_pk
CASCADE;

ALTER TABLE emp
ENABLE CONSTRAINT emp_emp_no_prk;

Which two statements are true after execution?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

The primary key constraint will be enabled and IMMEDIATE.
The primary key constraint will be enabled and DEFERRED.
The foreign key constraint will be enabled and DEFERRED.
The foreign key constraint will be disabled.
The foreign key constraint will be enabled and IMMEDIATE.

Explicación

Pregunta 155 de 120

1

Which two statements are true about the ORDER BY clause?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

Only columns that are specified in the SELECT list can be used in the ORDER BY clause.
Numeric values are displayed in descending order if they have decimal positions.
NULLS are not included in the sort operation.
Column aliases can be used in the ORDER BY clause.
In a character sort, the values are case-sensitive.

Explicación

Pregunta 156 de 120

1

Examine this query:
SELECT employee_id, first_name, salary
FROM employees
WHERE hire_date > '&1';

Which two methods should you use to prevent prompting for a hire date value when this query is executed?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

Store the query in a script and pass the substitution value to the script when executing it.
Execute the SET verify off command before executing the query.
Use the undefine command before executing the query.
Execute the SET VERIFY ON command before executing the query.
Replace '&1' with '&&1' in the query.
Use the define command before executing the query.

Explicación

Pregunta 157 de 120

1

You issued this command:
DROP TABLE hr.employees;

Which three statements are true?

(Choose three).

Selecciona una o más de las siguientes respuestas posibles:

All indexes defined on HR.EMPLOYEES are dropped.
Synonyms for HR.EMPLOYEES are dropped.
The HR.EMPLOYEES table may be moved to the recycle bin.
Sequences used to populate columns in the HR.EMPLOYEES table are dropped.
All constraints defined on HR.EMPLOYEES are dropped.
Views referencing HR.EMPLOYEES are dropped.

Explicación

Pregunta 158 de 120

1

Examine the data in the CUST_NAME column of the CUSTOMERS table:
CUST_NAME
==========
Renske Ladwing
Jason Mallin
Samuel McCain
Allan McEwen
Irene Mikkilineni
Julia Nayer

You want to display the CUST_NAME values where the last name starts with Mc or MC.

Which two WHERE clauses give the required result?

(Choose two).

Selecciona una o más de las siguientes respuestas posibles:

WHERE UPPER (SUBSTR (cust_name, INSTR (cust_name, ' ') + 1)) LIKE UPPER ('MC%')
WHERE SUBSTR(cust_name, INSTR(cust_name, ' ') + 1 ) LIKE 'Mc%' OR 'MC%'
WHERE SUBSTR(cust_name, INSTR(cust_name, ' ') +1) LIKE 'Mc%'
WHERE INITCAP(SUBSTR(cust_name, INSTR(cust_name, ' ') +1)) LIKE 'Mc%'
WHERE INITCAP(SUBSTR(cust_name, INSTR(cust_name, ' ') +1)) IN (MC%', 'Mc%)

	Creado por Henderson Viscarra hace alrededor de 2 años

Database Administration

Pregunta 1 de 120

You execute this command: CREATE BIGFILE TABLESPACE big_tbs DATAFILE '/u01/oracle/data/big_f1.dbf' SIZE 20G; Sufficient storage is available in filesystem /u01. Which two statements are true about the BIG_TBS tablespace? (Choose two).

Selecciona una o más de las siguientes respuestas posibles:

Explicación

Pregunta 2 de 120

Which statement is true about the INTERSECT operator used in compound queries?

Selecciona una o más de las siguientes respuestas posibles:

Explicación

Pregunta 3 de 120

Which three statements are true about advanced connection options supported by Oracle Net for connection to Oracle Database instances? (Choose three).

Selecciona una o más de las siguientes respuestas posibles:

Explicación

Pregunta 4 de 120

Which two statements are true about date/time functions in a session where NLS_DATE_FORMAT is set to DD-MON-YYYY HH24:MI:SS? (Choose two).

Selecciona una o más de las siguientes respuestas posibles:

Explicación

Pregunta 5 de 120

A database is configured to use automatic undo management with temporary undo enabled. An UPDATE is executed on a temporary table. Where is the UNDO stored?

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 6 de 120

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 7 de 120

In the spfile of a single instance database, LOCAL_LISTENER is set to LISTENER_1. The TNSNAMES.ORA file in $ORACLE_HOME/network/admin in the database home contains: LISTENER_1 = (ADDRESS = (PROTOCOL = TCP) (HOST = host1.abc.com) (PORT = 5121) ) Which statement is true?

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 8 de 120

Which three statements are true concerning logical and physical database structures? (Choose three).

Selecciona una o más de las siguientes respuestas posibles:

Explicación

Pregunta 9 de 120

Which two statements are true regarding a SAVEPOINT? (Choose two).

Selecciona una o más de las siguientes respuestas posibles:

Explicación

Pregunta 10 de 120

Which three functions are performed by dispatchers in a shared server configuration? (Choose three).

Selecciona una o más de las siguientes respuestas posibles:

Explicación

Pregunta 11 de 120

Which two statements are true about the SET VERIFY ON command? (Choose two).

Selecciona una o más de las siguientes respuestas posibles:

Explicación

Pregunta 12 de 120

Which three statements are true about a self join? (Choose three).

Selecciona una o más de las siguientes respuestas posibles:

Explicación

Pregunta 13 de 120

You want to write a query that prompts for two column names and the WHERE condition each time it is executed in a session but only prompts for the table name the first time it is executed. The variables used in your query are never undefined in your session. Which query can be used?

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 14 de 120

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 15 de 120

Examine this command: ALTER DATABASE MOVE DATAFILE '/u01/sales1.dbf' TO '/u01/sales01.dbf' REUSE; Which two statements are true? (Choose two).

Selecciona una o más de las siguientes respuestas posibles:

Explicación

Pregunta 16 de 120

Which three statements are true about dropping and unused columns in an Oracle database? (Choose three).

Selecciona una o más de las siguientes respuestas posibles:

Explicación

Pregunta 17 de 120

Which two statements are true regarding Oracle database space management within blocks managed by Automatic Segment Space Management (ASSM)? (Choose two).

Selecciona una o más de las siguientes respuestas posibles:

Explicación

Pregunta 18 de 120

Selecciona una o más de las siguientes respuestas posibles:

Explicación

Pregunta 19 de 120

Which three instance situations are possible with the Oracle Database server without multi-tenant? (Choose three).

Selecciona una o más de las siguientes respuestas posibles:

Explicación

Pregunta 20 de 120

Which two statements are true about the ORDER BY clause when used with a SQL statement containing a SET operator such as UNION? (Choose two).

Selecciona una o más de las siguientes respuestas posibles:

Explicación

Pregunta 21 de 120

You execute this command:
CREATE BIGFILE TABLESPACE big_tbs
DATAFILE '/u01/oracle/data/big_f1.dbf'
SIZE 20G;

Sufficient storage is available in filesystem /u01.
Which two statements are true about the BIG_TBS tablespace?

(Choose two).

Which three statements are true about advanced connection options supported by Oracle Net for connection to Oracle Database instances?

(Choose three).

Which two statements are true about date/time functions in a session where NLS_DATE_FORMAT is set to DD-MON-YYYY HH24:MI:SS?

(Choose two).

A database is configured to use automatic undo management with temporary undo enabled. An UPDATE is executed on a temporary table.

Where is the UNDO stored?

In the spfile of a single instance database, LOCAL_LISTENER is set to LISTENER_1.
The TNSNAMES.ORA file in $ORACLE_HOME/network/admin in the database home contains:
LISTENER_1 =
(ADDRESS =
(PROTOCOL = TCP)
(HOST = host1.abc.com)
(PORT = 5121)
)

Which statement is true?

Which three statements are true concerning logical and physical database structures?

(Choose three).

Which two statements are true regarding a SAVEPOINT?

(Choose two).

Which three functions are performed by dispatchers in a shared server configuration?

(Choose three).

Which two statements are true about the SET VERIFY ON command?

(Choose two).

Which three statements are true about a self join?

(Choose three).

You want to write a query that prompts for two column names and the WHERE condition each time it is executed in a session but only prompts for the table name the first time it is executed.
The variables used in your query are never undefined in your session.

Which query can be used?

Examine this command:
ALTER DATABASE
MOVE DATAFILE '/u01/sales1.dbf'
TO '/u01/sales01.dbf'
REUSE;

Which two statements are true?

(Choose two).

Which three statements are true about dropping and unused columns in an Oracle database?

(Choose three).

Which two statements are true regarding Oracle database space management within blocks managed by Automatic Segment Space Management (ASSM)?

(Choose two).

Which three instance situations are possible with the Oracle Database server without multi-tenant?

(Choose three).

Which two statements are true about the ORDER BY clause when used with a SQL statement containing a SET operator such as UNION?

(Choose two).

Which four account management capabilities can be configured using Oracle profiles?

(Choose four).

Which three statements are true about single-row functions?

(Choose three).

You want to use table compression suitable for OLTP that will:
1. Compress rows for all DML statements on that table
2. Minimize the overheads associated with compression

Which compression option is best suited for this?

Which two statements are true about space-saving features in an Oracle Database?

(Choose two).

Which two statements are true about the PMON background process?

(Choose two).

In which three situations does a new transaction always start?

(Choose three).

Which three Oracle database space management features will work with both Dictionary and Locally managed tablespaces?

(Choose three).

In one of your databases, you create a user, HR, and then execute this command:
GRANT CREATE SESSION TO hr WITH ADMIN OPTION;

Which four actions can HR perform?

(Choose four).

Which two statements are true about the WHERE and HAVING clauses in a SELECT statement?

(Choose two).

Which two statements are true about UNDO and REDO?

(Choose two).

Which three statements are true about the DESCRIBE command?

(Choose three).

The INVOICE table has a QTY_SOLD column of data type NUMBER and an INVOICE_DATE column of data type DATE.
NLS_DATE_FORMAT is set to DD-MON-RR.

Which two are true about data type conversions involving these columns in query expressions?

(Choose two). ==> 3