AWS Backup of RDS managed Oracle or MS-SQL database

Hello,

Yes AWS Backup can be used to back up RDS databases including Microsoft SQL Server and Oracle.

How to: https://aws.amazon.com/getting-started/hands-on/amazon-rds-backup-restore-using-aws-backup/

Documentation: https://docs.aws.amazon.com/aws-backup/latest/devguide/whatisbackup.html

Hello,

AWS Backup supports Amazon RDS database instances (including all database engines); Multi-Availability Zone clusters.

This Blog Post provides a step-by-step guidance to backup your RDS for Oracle instances using AWS Backup.
In case you need to have Cross-Region AND Cross-Account backups which are not supported at the same time, you can use the workaround described here.