Hi,

We have faced an issue in the message driven bean level. That is when messages are arrived to the MDB at the same time will process out of order.

ex:

Message 1, Message 2, Message 3

But in the application level onMessage method we received the messages in the order like below.

Message 2, Message 1, Message 3

We are using the EJB 3 message driven annotations in our MDB.

@MessageDriven(activationConfig = {

        @ActivationConfigProperty(propertyName = "destinationType", propertyValue = "javax.jms.Queue"),

        @ActivationConfigProperty(propertyName = "destination", propertyValue = "queue/Queue1"),

        @ActivationConfigProperty(propertyName = "subscriptionDurability", propertyValue = "Durable"),

        @ActivationConfigProperty(propertyName = "reconnectAttempts", propertyValue = "-1"),

        @ActivationConfigProperty(propertyName = "minSessions", propertyValue = "1"),

        @ActivationConfigProperty(propertyName = "maxSessions", propertyValue = "1"),

        @ActivationConfigProperty(propertyName = "maxMessagesPerSessions", propertyValue = "1"),

        @ActivationConfigProperty(propertyName = "acknowledgeMode", propertyValue = "Auto-acknowledge")}, name = "MessageDrivenBeanEJB")

We need to make sure messages arrived to out application in the order they received to the Jboss Application server.

Quick help is appreciated.

Thanks

Message was edited by: Chathura Randika