You need to perform a block media recovery on the tools01.dbf data file in your database by using Recovery manager (RMAN).
Which two are prerequisites for performing this operation?
A.
You must configure a block change tracking file.
B.
You must use an incremental level-1 backup to restore blocks.
C.
You must ensure that the database is mounted or open.
D.
You must have full or level-0 backups to restore blocks.
E.
You must take the tools01.dbf data file offline.
C and D.
The database must be in archivelog mode and mounted or open status.
The backups of datafiles containing corrupt blocks must be FULL or Level 0 backups.
LINK: https://docs.oracle.com/cd/B28359_01/backup.111/b28270/rcmblock.htm#BRADV89785
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