Examine this configuration:
1. CDB1is a container database.
2. PDB1and PDB2 are pluggable databases in CDB1.
You execute these commands successfully:

Which two are true? (Choose two.)

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 container database called CDB1 is OMF-enabled.
PDB_FILE_NAME_CONVERT is not configured in CDB1. PDB1 was unplugged from CDB1 earlier in the week. Examine this command, which will be executed in CDB1:
CREATE PLUGGABLE DATABASE pdb1
USING '/u01/app/oracle/oradata/pdb1.xml'
SOURCE_FILE_NAME_CONVERT =
('/u01/app/oracle/oradata/', '/u02/app/oracle/oradata/');
Which two are true? (Choose two.)

Which three are true about the SQL Tuning Advisor? (Choose three.)

A database is configured in archivelog mode.
A full RMAN backup exists but no control file backup to trace has been taken.
A media failure has occurred.
In which two scenarios is incomplete recovery required?