Posted On: Aug 13, 2023
Starting today, Amazon Relational Database Service (RDS) for Oracle supports read and mounted replicas for instances on the multitenant container database (CDB) architecture running in single-tenant configuration in the Amazon Web Services China (Ningxia) Region, operated by NWCD, and the Amazon Web Services China (Beijing) Region, operated by Sinnet. Amazon RDS for Oracle replicas fully manage the configuration of Oracle Data Guard to create and maintain replicas in the same or different Amazon Web Services Region as the primary DB instance.
With this launch, customers may now leverage the familiar read and mounted replicas for CDB instances. Read replicas, leveraging Oracle Active Data Guard technology and required licensing, allow RDS for Oracle customers to offload their read workload from the primary DB Instance, and also support the scalability of read workloads over a farm of up to five read replicas. Mounted replicas do not allow for read access to the replica during replication and do not require Active Data Guard licensing. Read replicas and mounted replicas can provide greater availability of your data by allowing you to promote a given replica as a new standalone database in the event of a failure of the primary DB instance. Replicas may also participate in Data Guard Switchover for disaster recovery testing purposes.
A read replica is billed as a standard DB instance and at the same rates. Replicas are available for customers running the Enterprise Edition of the Oracle Database versions 19c and 21c.