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(a)yahoo.com View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4018828#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...