Connection migration occurs when an existing client is transferred from one instance of a cluster to another. For example, a connection may migrate because the instance to which it is currently connected is brought down for maintenance, or it may migrate for load balancing. The transfer is transparent to the client application. Connection migration allows the cluster to balance the load throughout the logical cluster.
Connection migration allows the workload manager to gracefully move existing connections between instances during administrative failover, failback, or logical clusters going offline. The workload manager can use migration for dynamic load distribution, during which some existing connections are migrated between instances to more evenly distribute load.
Connection migration is enabled automatically when an instance uses the Open Client 15.0. client libraries. You do not need to perform any additional configuration for connection migration.
