Which two statements are true about the compressed backups in RMAN?

Which two statements are true about the compressed backups in RMAN? (Choose two.)

Which two statements are true about the compressed backups in RMAN? (Choose two.)

A.
Compressed backups can only be taken on the tape drives.

B.
The binary compression creates some performance overhead during backup operation.

C.
The ZLIB compression algorithm can be used only if the COMPATIBLE initialization
parameter is set to 11.1.0.

D.
The media manager compression for the tape drive should be enabled for taking
compressed backups on the tape.

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Andrew

Andrew

C is correct.

https://docs.oracle.com/cd/B28359_01/backup.111/b28270/rcmconfa.htm#BRADV89466

“The COMPATIBLE initialization parameter must be set to 11.0.0 or higher for ZLIB compression … ”

D is false.

https://docs.oracle.com/cd/B19306_01/backup.102/b14192/bkup002.htm

“If you are backing up to tape and your tape device performs its own compression, you should not use both RMAN backupset compression and the media manager vendor’s compression. In most instances you will get better results using the media manager’s compression.”

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