单选题You issue the following RMAN command to set a retention policy on a database: RMANCONFIGURE RETENTION POLICY TO REDUNDANCY 2; What will be the outcome of issuing this command? （）AAfter two days, a backup will be marked obsoleteBAfter two days, a backup will be deleted from the mediaCIf the RMAN repository has records of two or more recent backups of a file, then older backups will be deleted from the media.DIf the RMAN repository has records of two or more recent backups of a file, then older backups will be marked obsolete.
单选题
You issue the following RMAN command to set a retention policy on a database: RMAN>CONFIGURE RETENTION POLICY TO REDUNDANCY 2; What will be the outcome of issuing this command? （）
A
After two days, a backup will be marked obsolete
B
After two days, a backup will be deleted from the media
C
If the RMAN repository has records of two or more recent backups of a file, then older backups will be deleted from the media.
D
If the RMAN repository has records of two or more recent backups of a file, then older backups will be marked obsolete.
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