30.4.5. XA Recovery

XA recovery deals with system or application failures to ensure that resources of a transaction are applied consistently to all resources affected by the transaction, even if any of the application processes or the machine hosting them crash or lose network connectivity.

XA Recovery is pre-configured in HornetQ from version 2.2.8.GA. No configuration is required and the service cannot be disabled.

HornetQ takes advantage of JBoss Transactions to provide recovery of messaging resources. If messages are involved in a XA transaction, in the event of a server crash, the recovery manager will ensure that the transactions are recovered and the messages will either be committed or rolled back (depending on the transaction outcome) when the server is restarted.

For more information on XA Recovery, refer to the JBoss Transactions documentation provided with this release of JBoss Enterprise Application Platform.