Conditions of WLM failover

Automatic failover cannot always happen due to constraints of transaction affinity, server Q-stop, completion status, and server conditions. For situations where WLM cannot determine whether the request is completed, WLM will not automatically fail over the request. It is the client's responsibility to check if a retry is needed.

For example, when an org.omg.CORBA.COMM_FAILURE or org.omg.CORBA.NO_RESPONSE exception is thrown, the return value of COMPLETE_STATUS determines whether automatic failover takes place: COMPLETED_NO: automatic failover COMPLETED_YES: no failover MAYBE: no failover

In this case, WLM cannot verify whether the request is completed, and the client will receive a failure and decide whether to retry the request. Also, the client can check the minor codes to determine the status.

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