Manual and Automatic Service Migration

You can configure automatic service migration or manually migrate any of the migratable services—JMS-related services, the JTA Transaction Recovery Service, and user-defined singleton services. Note that manual service migration can be in response to a failure or can be for maintenance purposes as well. Manual service migration is the default mode—you must explicitly configure automatic service migration in order for services to be automatically migrated from one server to another when prompted by the cluster's health monitoring system.