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Quiz 2025 Unparalleled 1Z0-083 Valid Test Syllabus & Exam Oracle Database Administration II Course

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Oracle Database Administration II Sample Questions (Q56-Q61):

NEW QUESTION # 56
Which four are true about duplicating a database using Recovery Manager (RMAN)? (Choose four.)

A. Duplication can be done by having the auxiliary database instance pull backup sets from the target database instance.
B. A connection to the recovery catalog instance is always required.
C. A connection to the target database instance is always required.
D. A connection to an auxiliary instance is always required.
E. Duplication can be done by having the target database instance push copies to the auxiliary database instance.
F. A backup of the target database is always required.
G. A subset of the target database can be duplicated.
H. A new DBID is always created for the duplicated database.

Answer: A,D,E,G

Explanation:
A duplicate database is a copy of your target database. With the FOR STANDBY clause, it keeps the same unique database identifier(DBID); If FOR STANDBY not specified it creates a new DBID. The duplicate database can include the same content or only a subset from the source database. It can be in the same host or a separate host. The principal work of the duplication is performed by the auxiliary channels.These channels correspond to a server session on the auxiliary instance on the destination host for backup based duplication. For active database duplication the target channels perform the work of pushing data file copies to the auxiliary instance (if number of allocated target channels is greater than the number of allocated auxiliary channels).

NEW QUESTION # 57
Which two are true about the SQL Tuning Advisor?

A. It can recommend semantic changes to SQL statements.
B. It only recommends syntactic changes to SQL statements.
C. It prevents performance regressions for SQL statements when changes are made.
D. It considers all SQL statements being analyzed by the advisor task as a group.
E. It checks each query being analyzed for missing or stale statistics.

Answer: A,E

NEW QUESTION # 58
Which three are true about an application container? (Choose three.)

A. An application PDB can belong to multiple application containers.
B. Two application containers can share an application seed PDB.
C. It can contain a single application.
D. It must have an application seed PDB.
E. It can contain multiple applications.
F. It must have an application root PDB.

Answer: C,E,F

Explanation:
https://blog.toadworld.com/2017/06/26/oracle-multi-tenant-application-containers-part-i

NEW QUESTION # 59
While backing up to the Oracle Fast Recovery Area (FRA), you determined the backup istaking too long and suspect a performance bottleneck. Which three are true about diagnosing and tuning these problems? (Choose three.)

A. Setting DBWR_IO_SLAVES to a non zero value can improve backup performance when using asynchronous I/O/
B. If an RMAN BACKUP VALIDATE command takesroughly the same time as an actual backup, then read I/O is a likely bottleneck.
C. If an RMAN BACKUP VALIDATE command takesroughly the same time as an actual backup, then both read and write I/O are likely bottlenecks.
D. Setting DBWR_IO_SLAVES to a non zero value can improve backup performance when using synchronous I/O.
E. If an RMAN BACKUP VALIDATE command takes noticeably lessthan an actual backup, then write I/O is a likely bottleneck.
F. Data files with a high value in V$BACKUP_ASYNC_IO.SHORT_WAITS are a potential performance bottleneck when asynchronous I/O is used.
G. Data files with a high value in V$BACKUP_SYNC_IO.DISCRETE_BYTES_PER_SECOND are a potential performance bottleneck when synchronous I/O is used.

Answer: D,E,G

NEW QUESTION # 60
Which two are true about creating RMAN backups for an Oracle container database?

A. The backup database plus archivelog command will back up archive logs when RMAN is connected to a PDB.
B. The backup database command will create a pluggable database (PDB) backup when RMAN is connected to a PDB.
C. The backup pluggable database command can be used to back up cdb$root.
D. spfile backups can be created while connected to an application root PDB.
E. Tablespaces from different PDBs with identical names must be backed up by connecting RMAN separately to each PDB to back up the tablespaces.

Answer: A,B

NEW QUESTION # 61
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