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? （）

发布日期：2020-04-10

After two days, a backup will be marked obsolete

After two days, a backup will be deleted from the media

If the RMAN repository has records of two or more recent backups of a file, then older backups will be deleted from the media.

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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