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.
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