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单选题

You have enabled backup optimization in RMAN. You issue the following RMAN command to configure a redundancy-based retention policy:   CONFIGURE RETENTION POLICY TO REDUNDANCY 3;   Which statement is true?()  

发布日期:2020-04-10

You have enabled backup optimization in RMAN. You ...
A

The command fails because you cannot configure a redundancy-based retention policy when backup  optimization is enabled

B

Backup optimization is performed, but RMAN considers the redundancy-based retention policy when it determines which datafiles should be backed up

C

Backup optimization is permanently disabled

D

Backup optimization is temporarily disabled because a redundancy-based retention policy is specified

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