It is very easy to create the RMAN backup jobs through DBMS_SCHEDULER.
Benefits of using DBMS_SCHEDLER for RMAN jobs:
- For multinode RAC configuration, executing the RMAN jobs through OS cronjobs will fail when the node is not available. While using DBMS_SCHEDULER , the job can be run from serviving instance.
- It is easy to maintain the logs at OS level as well as in the database dictionary.
- By default execution of the job can be fixed for specific instance using service and can be changed at any time.