Overview of Exactly-Once Processing for JMS Triggers
Within Integration Server, exactly-once processing is a facility that ensures one-time processing of a persistent message by a JMS trigger. The trigger does not process duplicates of the message. Integration Server provides exactly-once processing when all of the following are true:
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The message is persistent.
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The JMS trigger has an acknowledgement mode set to
CLIENT_ACKNOWLEDGE.
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Exactly-once properties are configured for the JMS trigger.
Note:
Exactly-once processing typically only provides value for JMS triggers that receive messages from queues or JMS triggers that receive messages from topics using durable subscribers.