Oracle 11G OCP 1Z0-053 150

（150）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?

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

答案：（B）

解析：

《Backup and Recovery User's Guide》 5.5.2.2

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