[jboss-user] [Installation, Configuration & Deployment] - How do I configure a MDB so that multiple instance of it are

[kspreddy]

Hello All,

I have configured and deployed a jms queue and a MDB that is listening to the queue. I am observing that at any point of time, there is ONLY one receiver/consumer for this queue. The MDB is configured to have a minimum of 10 instances in the pool.  ThreadPool is also setup to have at least 100 threads.  

Are there any other parameters I need to configure so that this queue can have multiple concurrent receivers (instances of the same mdb)? 

I am using Jboss 4.0.5GA and jbossmq.

Here is the configuration:
conf/jboss-service.xml
--------------------------------------------------
 <!-- A Thread pool service -->
   
      JBoss System Threads
      System Threads
      <!-- How long a thread will live without any tasks in MS -->
      60000
      <!-- The max number of threads in the pool -->
      100
      <!-- The max number of tasks before the queue is full -->
      1000
      <!-- The behavior of the pool when a task is added and the queue is full.
      abort - a RuntimeException is thrown
      run - the calling thread executes the task
      wait - the calling thread blocks until the queue has room
      discard - the task is silently discarded without being run
      discardOldest - check to see if a task is about to complete and enque
         the new task if possible, else run the task in the calling thread
      -->
      run
   


conf/standardjboss.xml
-----------------------------
<container-configuration>

      <container-name>Standard Message Driven Bean</container-name>

      <call-logging>false</call-logging>

      <invoker-proxy-binding-name>message-driven-bean</invoker-proxy-binding-name>

      <container-interceptors>

        org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor

        org.jboss.ejb.plugins.LogInterceptor

        org.jboss.ejb.plugins.RunAsSecurityInterceptor

        <!-- CMT -->

        org.jboss.ejb.plugins.TxInterceptorCMT

        org.jboss.ejb.plugins.CallValidationInterceptor

        org.jboss.ejb.plugins.MessageDrivenInstanceInterceptor

        <!-- BMT -->

        org.jboss.ejb.plugins.MessageDrivenInstanceInterceptor

        org.jboss.ejb.plugins.MessageDrivenTxInterceptorBMT

        org.jboss.ejb.plugins.CallValidationInterceptor

        org.jboss.resource.connectionmanager.CachedConnectionInterceptor

      </container-interceptors>

      <instance-pool>org.jboss.ejb.plugins.MessageDrivenInstancePool</instance-pool>

      <instance-cache></instance-cache>

      <persistence-manager></persistence-manager>

      <container-invoker-conf>

                   DefaultJMSProvider

                                   StdJMSPool

                                   10

                                   10

                                   10

                                   True

      </container-invoker-conf>

      <container-pool-conf>

        100

      </container-pool-conf>

    </container-configuration>



MDB is configured to use "Standard Message Driven Bean" container...

Any help on this topic is greatly appreciated.

Thanks,
Kolagatla Reddy
kspreddy7 at yahoo.com 

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