Defines the type of migration policy to use for the services hosted by this migratable target.
Valid options are:
Manual Service Migration Only Indicates that no automatic migration of services hosted by this
migratable target will occur.
Auto-Migrate Exactly-Once Services Indicates that if at least one Managed Server in the candidate
server list is running, the services hosted by this migratable target will be active somewhere in the cluster
if servers should fail or are administratively shut down (either gracefully or forcibly).
For example, it is a recommended best practice to use this policy when a migratable target hosts a path service,
so if its preferred server fails or is shut down, the path service will automatically migrate to another candidate
server, and so will always be active in the cluster.
Note This value can lead to target grouping on a server member. For example, if you have five exactly-once
migratable targets and only one Managed Server is started in the cluster, then all five targets will be activated on
that server.
Auto-Migrate Failure-Recovery Services Indicates that the services hosted by this migratable target
will only start if the migratable target's User Preferred Server (UPS) is started. If an administrator manually shuts
down the UPS, either gracefully or forcibly, then a failure-recovery service will not migrate. However, if the UPS
fails due to an internal error, then the service will be migrated to another candidate server. If such a candidate
server is unavailable (due to either a manual shutdown or an internal failure), then the migration framework
will first attempt to reactivate the service on its UPS server. If the UPS server is not available at that time,
then the service will be migrated to another candidate server.
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Oracle Fusion Middleware Java API Reference for Oracle WebLogic Server 12c (12.1.2)