The USERS tablespace consists of data files 3 and 4 and must always be online in read/write mode. Which two are true about using RMAN to perform an open database back up of this tablespace? (Choose two.)
A.
Backups must be done incrementally.
B.
Backups must be contained in backup sets.
C.
Backups can be taken only if the database is in ARCHIVELOG mode.
D.
Backups can be done incrementally.
E.
The database must be registered in an RMAN catalog.
A good example of how Oracle mixes up CAN/MUST to confuse us, in tests, as all answers sound correct!
A - FALSE. It CAN be done incrementally, not MUST
B - FALSE. They CAN be contained in backup sets, not MUST
C - TRUE. By definition, you can only take online backups in ARCHIVELOG mode
D - TRUE. Yes, they CAN be done incrementally. They don't have to be.
E - FALSE. You CAN register in an RMAN catalog, you don't have to
F - FALSE. An online backup is INCONSISTENT.
So, CD are TRUE
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