Free Access Oracle.1Z1-083.v2022-05-30.q253 Practice Test (Page 41)

Question 196

Which two are true about duplicating pluggable databases (PDBs) with RMAN? (Choose two.)

A.Two or more PDBs can be duplicated with the same RMAN DUPLICATE command.

B.All tablespaces belonging to a PDB must be duplicated when duplicating the PDB.

C.The auxiliary instance is automatically created with ENABLE_PLUGGABLE_DATABASE = TRUE.

D.A user with SYSDBA or SYSBACKUP must be logged in with RMAN to the PDB to duplicate it.

E.CDB$ROOT and PDB$SEED are automatically duplicated.

Question 197

Choose three. Which three are true about the Oracle Optimizer?

A.It updates stale object statistics in the Data Dictionary.

B.It considers the filters in WHERE clauses when generating execution plans for SQL statements.

C.It obeys all hints.

D.It can only use SQL Plan Directives tied to the SQL statement for which a plan is being generated.

E.It considers object statistics when generating execution plans for SQL statements.

F.It can re-optimize execution plans after previous executions detect suboptimal plans.

Question 198

Examine this configuration:
* CDB1 is a container database.
* PDB1 and PDB2 are pluggable databases in CDB1.
You execute these commands successfully:

Which two are true? (Choose two.)

A.PDB1 and PDB2 are in MOUNT state.

B.PDB1 and PDB2 are in READ ONLY state.

C.Redo logs are opened.

D.PDB$SEED is in READ ONLY state.

E.CDB$ROOT is in MOUNT state.

Question 199

Which two are true about gathering optimizer statistics? (Choose two.)

A.Executing DBMS_STATS.GATHER_DATABASE_STATS while connected to CDB$ROOT gathers object statistics in all open PDBs except PDB$SEED.

B.Executing DBMS_STATS.GATHER_DATABASE_STATS while connected to a PDB opened in read/write mode gathers object statistics for that PDB.

C.Executing DBMS_STATS.GATHER_DATABASE_STATS while connected to CDB$ROOT gathers object statistics only in CDB$ROOT.

D.System statistics can be gathered only while connected to CDB$ROOT.

E.Executing DBMS_STATS.GATHER_DATABASE_STATS while connected to CDB$ROOT gathers object statistics in all open pluggable databases (PDBs)

Question 200

Which three are true about upgrading Oracle Grid Infrastructure?

A.A direct upgrade can be performed only from the immediately preceding Oracle Grid Infrastructure version.

B.The upgrade process will automatically install all mandatory patches for the current version of Oracle Grid Infrastructure.

C.The newer version is installed in a separate Oracle Grid Infrastructure home on the same server as the existing version.

D.Only the grid user can perform the upgrade.

E.Existing Oracle Database instances must be shut down before starting the upgrade.

F.An existing Oracle base can be used.

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