Maximum Retention Window

The max_retention_window parameter of DBMS_RA.CREATE_PROTECTION_POLICY specifies the maximum time that the Recovery Appliance retains backups for databases using this policy. Specifying null means that no backup purging occurs unless caused by space pressures within a storage location, or user actions.

The Recovery Appliance only keeps backups longer than the retention window when necessary to preserve the recovery window goal for a database. The effect of this setting is that the Recovery Appliance deletes backups sooner than it might otherwise have chosen to delete them.