Create a new OCI DB Service instance and use the “instantiate from backup” option in the console. This will automatically take care of the encryption.

Create a new OCI DB Service instance, delete the existing database, and use the DBaa$ tooling to configure the DB Cloud Backup Module to point to the existing bucket, and then restore the backup by using the console.

Create a new OCI DB Service Instance, copy the backup data from the bucket to the FRA, and then use the console to perform a DB restore.

Create a new DB Service instance, delete the existing database, manually install the DB Cloud Backup Module pointing it to the backed where the on-premises backups are located, and perform a complted RMAN RESTORE AS encryption operation.