Planned Switchback of Services in the DR Center

Prerequisites

• Planned migration and reprotection have been successfully performed for the service system in the production center according to the recovery plan.
• The production host is working properly and the service system in the original production center is in standby state.
• In the Oracle application, the database is disabled but the cluster is enabled by default on the eReplication Agent. If you need to disable clusters, modify the configuration of disabling clusters. For details, see Changing the Configuration of Stopping the Oracle Cluster.
• The datastore name cannot contain Chinese characters.

Procedure

1. Test the recovery plan and clear the test data on eReplication.

   Before the services are switched back, you need to perform a DR test to verify the data availability to ensure that services can be switched back successfully. After the test, you must clear the test data to avoid switchback failure caused by test data. For details, see DR Testing in the DR Center.

2. On eReplication of the DR center, perform a planned migration.

   This step aims to switch services back to the production center from the DR center.

3. On eReplication of the DR center, perform reprotection.

   After you complete the planned migration, the application systems are working in the original production center and protected groups become Invalid. To ensure that the production center can be recovered from the DR center in case an event (planned or unplanned) happens on it after the switchback, perform reprotection and recover the replication relationship between the production center and the DR center to synchronize data and ensure that services are protected. For details, see 5 to 6 in Planned Migration of Services in the Production Center.

Result

Once the reprotection is complete, the protected groups become normal.