多选题Which two statements regarding compressed backups in Recovery Manager （RMAN） are true？（）ABackup compression is disabled by default.BBackup compression can be used with both backup sets and image copies.CBackup compression cannot be enabled using the CONFIGURE command.DBackup compression works only if the COMPATIBILITY parameter is set to 9.0.0.0 or higher.EBackup compression applies to only backup sets.FBackup compression applies to only image copies.
多选题
Which two statements regarding compressed backups in Recovery Manager （RMAN） are true？（）
A
Backup compression is disabled by default.
B
Backup compression can be used with both backup sets and image copies.
C
Backup compression cannot be enabled using the CONFIGURE command.
D
Backup compression works only if the COMPATIBILITY parameter is set to 9.0.0.0 or higher.
E
Backup compression applies to only backup sets.
F
Backup compression applies to only image copies.
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