Integration Server 10.5 | JMS Client Development Guide | Exactly-Once Processing for JMS Triggers | Overview of Exactly-Once Processing for JMS Triggers
 
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:
*The message is persistent.
*The JMS trigger has an acknowledgement mode set to CLIENT_ACKNOWLEDGE.
*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.