MDB gets disconnected at random when the ear is undelpoyed and reployed

Question

I have the following scenario:
          1. I create a domain
          2. I copy my application ear file to the following location
          ..\user_projects\domains\mydomain\app\myapp.ear
          3. I start the weblogic server
          4. Deploy myapp.ear
          5. By the nature of our application, based on the client's needs, we make a copy of myapp.ear under ..\user_projects\domains\mydomain\app\myclient\ear\myapp.ear and update the ear with new jars and connectors
          6. Without shutting down the server we undeploy the myapp.ear under ..\user_projects\domains\mydomain\app\myapp.ear and deploy the myapp.ear under ..\user_projects\domains\mydomain\app\myclient\ear\myapp.ear
          I run my tests everything works except the tests involving my MDB. When I run the tests the first time, the onMessage() of the MDB gets invoked and the test passes. But on subsequent re-runs of the same test, the MDB fails to respond at some point (it could be the 2nd or the 3rd ..). The onMessage is never invoked. The messages are being pushed on the queue but for some reason, the MDB is loosing its connection. The MDB is a myapp.ear which is deployed first. So when we undeploy the first myapp.ear the MDB gets deactivated and then gets redeployed when the second myapp.ear is deployed. The weird thing is if I restart the server, everything works fine but our clients want this to work without having to restart the server. Any help on this issue is much appreciated.
          Thanks
          Prashanth.

Answer 1

Hi Prashanth,
          There are a couple of things that you should check:
          1. When you deploy the new version, make sure the server log prints the message that the MDB has been deployed.
          2.Make sure the messages are being sent correctly. If the MDB is not working fine, the messages should still be sitting on the destination.
          Check what is the status of these messages....are they pending messages?
          Hope it helps!
          -Rais