Dell Avamar for Oracle 19.10 User Guide

The recovery window policy specifies a period of time that begins with the current time and extends backward in time to the point of recoverability. For example, a recovery window policy can be seven days. The redundancy policy specifies the number of backups that are kept for the database. The default retention policy keeps one backup.

As backups accumulate, older backups become obsolete according to the retention policy. RMAN uses crosscheck and delete operations to manage backups that are stored on the Avamar server:

• Crosscheck operations verify that backups on the Avamar server exist. Crosscheck operations also work for backups that are created by Avamar Administrator.
• Delete operations remove expired backups from the Avamar server if the backups are marked as obsolete. Delete operations do not work for backups that are created by Avamar Administrator.