Working with high availability features for RDS Custom for Oracle - Amazon Relational Database Service

Working with high availability features for RDS Custom for Oracle

To support replication between RDS Custom for Oracle DB instances, you can configure high availability (HA) with Oracle Data Guard. The primary DB instance automatically synchronizes data to the standby instances. This feature is supported only in Enterprise Edition.

You can configure your high availability environment in the following ways:

  • Configure standby instances in different Availability Zones (AZs) to be resilient to AZ failures.

  • Place your standby databases in mounted or read-only mode.

  • Fail over or switch over from the primary database to a standby database with no data loss.

  • Migrate data by configuring high availability for your on-premises instance, and then failing over or switching over to the RDS Custom standby database.

To learn how to configure high availability, see the whitepaper Build high availability for Amazon RDS Custom for Oracle using read replicas. You can perform the following tasks:

  • Use a virtual private network (VPN) tunnel to encrypt data in transit for your high availability instances. Encryption in transit isn't configured automatically by RDS Custom.

  • Configure Oracle Fast-Failover Observer (FSFO) to monitor your high availability instances.

  • Allow the observer to perform automatic failover when necessary conditions are met.