Online Access Free Oracle.1Z0-083.v2022-12-23.q164 Practice Test (Page 26)

1Z0-083 Exam Question 121

choose three Which three are true about unified auditing in full mode?

A.Audit records are created for non-sys users.

B.Audit records are created for COMMIT, ROLLBACK, and SAVEPOINT statements.

C.The unified audit trail is written to a read-only table.

D.The unified audit trail is written to a read-only external file.

E.Audit records are created for SYS.

1Z0-083 Exam Question 122

While backing up to the Oracle Fast Recovery Area (FRA), you determined the backup is taking too long and suspect a performance bottleneck.
Which three are true about diagnosing and tuning these problems? (Choose three.)

A.If an RMAN BACKUP VALIDATE command takes roughly the same time as an actual backup, then read I/O is a likely bottleneck.

B.Data files with a high value in V$BACKUP_SYNC_IO.DISCRETE_BYTES_PER_SECOND are a potential performance bottleneck when synchronous I/O is used.

C.Setting DBWR_IO_SLAVESto a non zero value can improve backup performance when using asynchronous I/O/

D.If an RMAN BACKUP VALIDATE command takes roughly the same time as an actual backup, then both read and write I/O are likely bottlenecks.

E.Setting DBWR_IO_SLAVES to a non zero value can improve backup performance when using synchronous I/O.

F.Data files with a high value in V$BACKUP_ASYNC_IO.SHORT_WAITS are a potential performance bottleneck when asynchronous I/O is used.

G.If an RMAN BACKUP VALIDATE command takes noticeably less than an actual backup, then write I/O is a likely bottleneck.

1Z0-083 Exam Question 123

Which two are true about monitoring waits for sessions and services?

A.v$session_event displays all waits for all past and existing sessions if the wait has occurred at least once for a session.

B.v$session_wait and v$session both contain details of the event on which a non-waiting session last waited.

C.v$session_wait and v$session both contain details of the event on which a waiting session is currently waiting.

D.v$service_event displays wait counts for every wait event whether waited on or not, for each service.

E.v$session_wait_class displays waits broken down by wait class only for waiting sessions.

1Z0-083 Exam Question 124

Which four are true about duplicating a database using Recovery Manager (RMAN)? (Choose four.)

A.A connection to the target database instance is always required.

B.A subset of the target database can be duplicated.

C.A connection to an auxiliary instance is always required.

D.Duplication can be done by having the target database instance push copies to the auxiliary database instance.

E.A backup of the target database is always required.

F.A connection to the recovery catalog instance is always required.

G.Duplication can be done by having the auxiliary database instance pull backup sets from the target database instance.

H.A new DBID is always created for the duplicated database.

1Z0-083 Exam Question 125

You are administering a multitenant container database (COB) that contains two pluggable databases (PDBs), pdb1 and pdb2. You are connected to pdb2 as a common user with DBA privileges. The statistics_level parameter is PDB modifiable. As the user sys, execute the following command on pdb2: SQL> ALTER SYSTEM SET STATISTICS_LEVEL=ALL SID='*' SCOPE=SPFILE; Which statement is true about the result of this command?

A.The statistics_level parameter is set to all when the root database is restarted.

B.The statistics_level parameter is set to all when any of the PDBs is reopened.

C.The statement is ignored because there is no SPFILE for a PDB.

D.The statistics_level parameter is set to all only for PDB2 when it is reopened.

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1Z0-083 Exam Question 121

1Z0-083 Exam Question 122

1Z0-083 Exam Question 123

1Z0-083 Exam Question 124

1Z0-083 Exam Question 125

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