MDB messages dont get processed from Queues when involving a remote Topic in transaction

Question

Using WLS 6.1 SP4 on winXP Pro boxes, I have come across a peculiar problem:
          I have several MDBs that process ObjectMessages from queues and forward their payload (wrapped in another new ObjectMessage) to other queues, all of which are located within the same WLS server.
          Right now I'm adding a new MDB that gets messages from a remote Topic with a durable subscription, and forwards the payload to local queues after some processing.
          When the Topic is local as well, there is no problem. But when the Topic is set up in a remote machine, only the MDB that has the remote durable subscription works the way it should. It receives the remote message and forwards it to the corresponding local queue. But then the messages in those local queues dont get processed. The 'Messages Received' count rises and the 'Messages' count stays at 0, as if the messages had been correctly processed and acknowledged, but no onMessage() method is called besides the one from the MDB that has the durable subscription to the remote Topic (I can tell because there's no further processing from the queue those messages get put in). It's as if those messages were simply received and acknowledged without being passed to other MDBs by WLS.
          * All queue MDBs use Required container-managed transaction management and auto-acknowledge
          * All queue MDBs have default durability for their queue subscriptions
          * The topic MDB has a durable subscription stored in a filestore
          * Lookup of the remote Topic is done via JNDI
          Since the processing and forwarding of messages occurs the way it should when everything is local, I am inclined to believe one of two things:
          a) There's some issue with the way WLS treats messages (or even just payloads) when they come from a remote server
          b) WLS is doing something I'm not aware of when propagating a transaction that begins with the delivery of a message from a remote JMS Topic when it involves further forwarding of messages in local JMS Queues.
          Any help will be appreciated.
          regards,
          .munir estevane
          

Answer 1

Is the durable subscriber forwarder rolling back its transactions?
          That would cause the behavior you describe (eg the message gets
          placed in the queue, but is never made visible). What do
          the pending counts on the destination queue look like?
          Munir Estevane wrote:
          > Using WLS 6.1 SP4 on winXP Pro boxes, I have come across a peculiar problem:
          >
          > I have several MDBs that process ObjectMessages from queues and forward their payload (wrapped in another new ObjectMessage) to other queues, all of which are located within the same WLS server.
          > Right now I'm adding a new MDB that gets messages from a remote Topic with a durable subscription, and forwards the payload to local queues after some processing.
          >
          > When the Topic is local as well, there is no problem. But when the Topic is set up in a remote machine, only the MDB that has the remote durable subscription works the way it should. It receives the remote message and forwards it to the corresponding local queue. But then the messages in those local queues dont get processed. The 'Messages Received' count rises and the 'Messages' count stays at 0, as if the messages had been correctly processed and acknowledged, but no onMessage() method is called besides the one from the MDB that has the durable subscription to the remote Topic (I can tell because there's no further processing from the queue those messages get put in). It's as if those messages were simply received and acknowledged without being passed to other MDBs by WLS.
          >
          > * All queue MDBs use Required container-managed transaction management and auto-acknowledge
          > * All queue MDBs have default durability for their queue subscriptions
          > * The topic MDB has a durable subscription stored in a filestore
          > * Lookup of the remote Topic is done via JNDI
          >
          > Since the processing and forwarding of messages occurs the way it should when everything is local, I am inclined to believe one of two things:
          > a) There's some issue with the way WLS treats messages (or even just payloads) when they come from a remote server
          > b) WLS is doing something I'm not aware of when propagating a transaction that begins with the delivery of a message from a remote JMS Topic when it involves further forwarding of messages in local JMS Queues.
          >
          > Any help will be appreciated.
          >
          > regards,
          > .munir estevane