Scenario 1: Queue manager performs the coordination
In scenario 1, the queue manager acts as the transaction manager. In this scenario, MQI
verbs control the global units of work; they are started in applications using the MQBEGIN verb and
then committed using MQCMIT or backed out using MQBACK.
Isolation level IBM® MQ , a message on a queue might be visible before a database update, depending on the transaction isolation design implemented within the database. Database coordination Configuring Db2 Db2® support and configuration information. Configuring Oracle Configuring Informix Informix® support and configuration information. Sybase configuration Multiple database configurations Security considerations Considerations when contact is lost with the XA resource manager XA dynamic registration xa_* calls that a transaction manager makes to a resource manager. This optimization is known as dynamic registration .
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