If your Oracle database is connected to the Oracle Grid you can easily manage your backups through Enterprise Manager. This allows you to schedule a multitude of backups without going through complex RMAN scripts.
The following screenshots will guide you through the process of scheduling a backup in Enterprise Manager:
Step 1: Click on the Availability tab and select Backup Settings to define your backup policy:
Step 2: Choose a suitable backup location:
Step 3: Choose your backup retention policy:
Step 4: Go back to the first screen (Availability tab) and this time click on schedule backup. In this screen choose what you want to backup:
Step 5: In this last screen you choose whether you want a full or an incremental backup.
In the next screens you set a date and a time and finally save your backup.