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
[e-mail]

[vandana_awat]

could you tell me if you found solution to the above issue ?
how can we manage the no of pooled mdb instances in jboss ... ?

[peterj]

vadana_awat, please do not resurrect 2-year old posts; you should really start a new post. Also, are you really using 4.0.5? Are you using EJB2.x or EJB3?