Are your WebSphere MQ JMS subscribers receiving duplicate messages? Maybe you should use cloned subscriptions.
When creating Java™ Message Service (JMS) subscriptions, it may be that only one message is desired but during testing you receive duplicate messages. Applications using the WebSphere MQ (WMQ) classes for JMS that subscribe to the same topic each receive the same messages. If you have a clustered jvm application subscribing to a topic, you would receive a message for each instance. If your objective is to only receive one message, you may wish to create a cloned subscription. By using a cloned subscription, only one copy of the... [More]