You have executed this command to change the size of the database buffer cache：
SQL> ALTER SYSTEM SET DB_CACHE_SIZE=2516582；
System altered. To verify the change in size， you executed this command：SQL> SHOW PARAMETER DB_CACHE_SIZENAME TYPE VALUE
------------------- ----------- ------------------ db_cache_size big integer 4194304
Why is the value set to 4194304 and not to 2516582（）
A.Because 4194304 is the granule size
B.Because 4194304 is the standard block size
C.Because 4194304 is the largest nonstandard block size defined in the database
D.Because 4194304 is the total size of data already available in the database buffer cache
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You notice that the performance of the database has degraded because of frequent checkpoints.
Which twoactions resolve the issue（）
A.Disable automatic checkpoint tuning.
B.Check the size of the redo log file size and increase the size if it is small.
C.Set the FAST_START_MTTR_TARGET parameter as per the advice given by the MTTR Advisor.
D.Decrease the number of redo log members if there are more than one redo log members available in eachredo log group.
Examine the command：
SQL> ALTER USER skd ACCOUNT LOCK；
Which two statements are true after the command is executed（）
A.The SKD user cannot log in to the database instance.
B.The objects owned by the SKD user are not accessible to any user.
C.The other users can access the objects owned by the SKD user， on which they have access.
D.The password for the SKD user expires and the user is forced to change the password at the next log in
You want to move all objects of the APPS user in the test database to the DB_USER schema of the productiondatabase.
Which option of IMPDP would you use to accomplish this task（）
A.FULL
B.SCHEMAS
C.TRANSFORM
D.REMAP_SCHEMA
E.REMAP_TABLESPACE
View the Exhibit to examine the output for the CROSSCHECK BACKUP command.
Which statement is trueabout the output of the command（）
A.The backup piece is expired as the new backup is available.
B.The backup piece is expired because the operating-system file was not found.
C.The backup piece is expired because the retention period for the backup has expired.
D.The backup piece is expired because the backup set to which it belongs is not complete
View the Exhibit to examine the error that occurred during the database startup. You opened an RMAN sessionfor the database. To repair the failure， you executed the following command as the first RMAN command：RMAN>REPAIR FAILURE；
Which statement describes the consequence of this command（）
A.The command performs the recovery and closes the failure.
B.The command only displays the advice and the RMAN script required for recovery.
C.The command executes the RMAN script to repair the failure and remove the entry from the AutomaticDiagnostic Repository （ADR）.
D.The command produces an error because the ADVISE FAILURE command was not executed before the REPAIR FAILURE command
Examine the following output：
SQL> SELECT index_name，status FROM dba_indexes WHERE status=’UNUSABLE’； INDEX_NAME STATUS------------------------------ -----------
EIND UNUSABLE
Which two statements about the above index are true（）
A.It is ignored by the query optimizer.
B.It is not used while the index is being rebuilt.
C.The index cannot be rebuilt， and has to be re-created.
D.The index is automatically rebuilt when used the next time
View the Exhibit. Which statements are true regarding the USERS tablespace（）
A.A bitmap is used to record free extents.
B.Free extents information is managed within the tablespace.
C.Free extents information is managed in the SYSAUX tablespace.
D.The data dictionary tables are updated when extents are allocated or deallocated
User A executes the following command to drop a large table in your database：SQL> DROP TABLE trans；
While the drop table operation is in progress， user B executes the following command on the same table：SQL> DELETE FROM trans WHERE tr_type=’SL’；
Which statement is true regarding the DELETE command（）
A.It fails to delete the records because the records are locked in SHARE mode.
B.It deletes the rows successfully because the table is locked in SHARE mode
C.It fails to delete the records because the table is locked in EXCLUSIVE mode.
D.It deletes the rows successfully because the table is locked in SHARE ROW EXCLUSIVE mode.
View the Exhibit to examine the details for an incident. Which statement is true regarding the status of theincident（）
A.The DBA is working on the incident and prefers that the incident be kept in the ADR.
B.The incident is now in the Done state and the ADR can select the incident to be purged.
C.The incident has been newly created and is in the process of collecting diagnostic information.
D.The data collection for the incident is complete and the incident can be packaged and sent to OracleSupport
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The database instance has the following parameter setting：OS_AUTHENT_PREFIX = OPS$ OS_ROLES = FALSE REMOTE_OS_AUTHENT = FALSEREMOTE_OS_ROLES = FALSE TIMED_OS_STATISTICS = 0 You have a local operating system user SKD.You create a database user OPS$SKD， and then assign external authentication. The user OPS$SKD has theCREATE SESSION privilege. What would you achieve by the above process（）
Which statements are true regarding listeners（）
View the Exhibit. You are creating an additional database by using the Database Configuration Assistant（DBCA）. You opted to create a General Purpose database and during the database creation realize that theBlock Size field is not enabled. What could be the reason for this（）
Which statements are true about logical structures of the Oracle database（）
Examine the command that is used to create a table：SQL> CREATE TABLE orders（oid NUMBER（6） PRIMARY KEY， odate DATE， ccode NUMBER （6）， oamtNUMBER（10，2）） TABLESPACE users；Which two statements are true about the effect of the above command（）
View the Exhibit and examine the privileges granted to the SL_REP user. The EMP table is owned by theSCOTT user. The SL_REP user executes the following command：SQL> GRANT SELECT ON scott.emp TO hr；Which statement describes the outcome of the command（）
Which statements are true about checkpointing（）
Which statements are true regarding the Oracle Data Pump export and import operations（）
You execute the following command to change the status of the SALES tablespace：SQL> ALTER TABLESPACE sales OFFLINE；Which statements describe the effect of the command（）
View the Exhibit and examine the attributes of an undo tablespace. In an OLTP system, the user SCOTT hasstarted a query on a large table in the peak transactional hour that performs bulk inserts. The query runs formore than 15 minutes and then SCOTT receives the following error:ORA-01555: snapshot too oldWhat could be the reason for this error（）