Free Access Oracle.1Z0-083.v2026-05-24.q248 Practice Test (Page 42)

Question 201

Which two are true about the Optimizer Statistics Advisor?

A.It can be run only manually.

B.It can be run only automatically.

C.It always analyzes all schemas in the database.

D.It can recommend changes to improve the statistics gathering process.

E.It runs automatically every night by default.

Question 202

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.Enable asynchronous disk I/O.

B.Disable FORCE LOGGING for the database.

C.Increase the size of the database buffer cache.

D.Increase the level of RMAN multiplexing.

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

Question 203

Choose three. Which three are true about using an RMAN Recovery Catalog with a pluggable database (PDB) target connection in Oracle Database 19c and later releases?

A.The target PDB must be registered in a Virtual Private Catalog.

B.The base catalog must be used by RMAN when performing point-in-time recovery for the PDB registered in the Virtual Private Catalog.

C.The target PDB must be registered in both the base catalog and the Virtual Private Catalog.

D.The base catalog owner must give the Virtual Private Catalog access to metadata for one or more PDBs.

E.The base catalog must be enabled for Virtual Private Catalog use.

F.The target PDB must be registered in a base catalog.

Question 204

Choose three. Which three are true about post-upgrade activities when upgrading an Oracle database using Database Upgrade Assistant?

A.Time zone files must be upgraded manually using the DBMS_DST PL/SQL package.

B.Any Recovery Manager (RMAN) recovery catalog must be upgraded manually.

C.The new extended data type capability must be enabled by running the utlrp.sql script

D.The Oracle Application Express configuration should be updated after upgrading Oracle Database.

E.After a manual upgrade, TNSNAMES.ORA entries must be updated to reflect the new ORACLE_HOME.

Question 205

Which two are true about changing the LOCAL_UNDO_ENABLED property to false in a CDB? (Choose two.)

A.Any new PDB and existing PDBs are automatically configured to use the default undo tablespace in CDB$ROOT.

B.After the change, only a common user with the required privilege can create an undo tablespace in CDB&ROOT.

C.After the change, any user with the required privilege can create an undo tablespace in the PDBs.

D.After the change, only one undo tablespace can exist in CDB$ROOT.

E.After the change, each existing PDB has to be reopened for the new undo mode to take effect.

F.Undo tablespaces existing in PDBs must be dropped before the change.

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Question 201

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