Backing up and restoring an Amazon RDS Custom for Oracle DB instance
Like Amazon RDS, RDS Custom creates and saves automated backups of your RDS Custom for Oracle DB instance during the backup window of your DB instance. You can also back up your DB instance manually.
The procedure is identical to taking a snapshot of an Amazon RDS DB instance. The first snapshot of an RDS Custom DB instance contains the data for the full DB instance. Subsequent snapshots are incremental.
Restore DB snapshots using either the AWS Management Console or the AWS CLI.