A.Uncommitted transactions in CDB1 and pdbi have been rolled back.

B.CDB1 is shut down.

C.Uncommitted transactions in PDB1 have been rolled back.

D.CDB1 is in mount state

E.PDB1 is closed.

A.The NOREDO clause must be used if the backups of the database being duplicated were taken when the database was in NOARCHIVELOG mode.

B.The UNDO TABLESPACE clause is always required when no connection exists to the TARGET instance.

C.RMAN "pushes" the backups of the database to be duplicated over the network to the auxiliary instance.

D.The NOREDO clause can be used if the backups of the database being duplicated were taken when the database was in ARCHIVELOG mode.

E.RMAN SBT-based backups of the database to be duplicated can be used by the auxiliary instance.

F.The UNDO TABLESPACE clause is always required when no connection exists to the recovery catalog and the TARGET database is closed.

G.The UNDO TABLESPACE clause is always required when no connection exists to the recovery catalog and the TARGET database is opened.

H.RMAN disk-based backups of the database to be duplicated can be used by the auxiliary instance.

A.V$SESSION_WAIT and V$SESSION both contain details of the event on which a non-waiting session last waited.

B.V$SESSION_WAIT_CLASS displays waits broken down by wait class only for waiting sessions.

C.V$SERVICE_EVENT displays all waits for all services if the wait has occurred at least once for a service.

D.V$SESSION_EVENT displays all waits for all past sessions if the wait has occurred at least once for a session.

E.V$SESSION_EVENT displays all waits for all past and existing sessions if the wait has occurred at least once for a session.

F.V$SESSION_WAIT and V$SESSION both contain details of the event on which a session is currently waiting.

A.A non-duplexed backup set written to SBT can be duplexed to disk by backing up the backup set that is already on tape.

B.A non-duplexed backup set written to disk can be duplexed to disk by backing up the backup set that is already on disk.

C.A non-duplexed backup set written to SBT can be duplexed to tape by backing up the backup set that is already on tape.

D.A non-duplexed backup set written to disk can be duplexed to tape by backing up the backup set that is already on disk.

E.A duplexed backup set always uses twice as many SBT channels as a non-duplexed backup set for the same number of files.

F.A duplexed backup set uses the same number of SBT channels as a non-duplexed backup set for the same number of files.

A.By default, AWR snapshots are taken every 60 minutes.

B.Its collection level is determined by the value of the STATISTICS_LEVEL database parameter.

C.By default, AWR snapshots are retained for 7 days.

D.The taking of AWR snapshots can be disabled.

E.AWR data is stored in the SYSTEM tablespace.