Free Access Oracle.1Z0-083.v2025-05-02.q283 Practice Test (Page 51)

Question 246

While backing up to an SBT channel, you determine that the read phase of your compressed Recovery Manager (RMAN) incremental level 0 backup is a bottleneck.
FORCE LOGGING is enabled for the database.
Which two could improve read performance? (Choose two.)

A.Disable FORCE LOGGING for the database.

B.Increase the level of RMAN multiplexing.

C.Increase the size of the database buffer cache.

D.Enable asynchronous disk I/O.

E.Increase the size of tape I/O buffers.

Question 247

In which two situations can you use Database Upgrade Assistant? (Choose two.)

A.when the target and source database are on the same platform

B.when a character set conversion is required during the upgrade

C.when the operating system (OS) needs to be changed as part of the upgrade

D.when multiple pluggable databases in a container database have to be upgraded in a specific sequence

E.when the hardware platform needs to be changed as part of the upgrade

Question 248

Which three are true about using Database Resource Manager in an Oracle multitenant environment?
(Choose three.)

A.PDB-level resource plans can limit uncommitted UNDO per consumer group.

B.A PDB-level resource plan can limit session PGA memory.

C.A CDB-level resource plan can limit PDB UNDO use.

D.A CDB-level resource plan can limit PDB CPU utilization.

E.A CDB-level resource plan can limit session CPU utilization.

F.A CDB-level resource plan is mandatory when using PDB-level resource plans.

Question 249

A container database (CDB) contains two pluggable databases PDB1 and PDB2.
The local_undo_enabled database property is set to false in the CDB.
Data file 24 of PDB2 was deleted and you need to restore and recover it.
The only RMAN backup that exists was created with the backup database command while connected to CDB$ROOT.
Which three are true?

A.Data file 24 can be restored only while connected to PDB2.

B.Data file 24 can be restored only while connected to CDB$ROOT.

C.Data file 24 can be restored and recovered while connected to CDB$ROOT.

D.Data file 24 can be recovered only while connected to PDB2.

E.Data file 24 can be recovered while connected to PDB2.

F.Data file 24 can be recovered while connected to CDB$ROOT.

Question 250

Examine the command to duplicate a database: RMAN> DUPLICATE TARGET DATABASE TO cdb PLUGGABLE DATABASE pdb1, pdb5; Which two statements are true about the DUPLICATE command?

A.An auxiliary instance must be started with the initialization parameter ENABLE_PLUGGABLE_DATABASE set to TRUE.

B.A backup of pdb1 and pdb5 must exist before executing the command.

C.The duplicate command first creates a backup, and then duplicates the PDBs by using the backup.

D.he SPFILE is copied along with the datafiles of the pluggable databases (PDBs). The root and the seed database in the container database (CDB) are also duplicated.

E.A backup of CDB and pdb1 and pdb5 must exist before executing the command.

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Question 246

Question 247

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Question 250

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