i'm using jboss4.2 , running and MDB (Message Driven Bean) specifially message-inflow-driven-bean i have IBM MQ . i have configured bridge between MQ and MDB running in JBOSS using MQ resource adapter on JBoss . i have followed this link for configuring http://www.ibm.com/developerworks/websphere/library/techarticles/0710_rit... i'm able to recive messages at MDB from MQ asynchronously and it is working fine . By default MDB exhibits concurrency . now my requirement is , i need to control the number of MDB istances , i want single instance read the messages . i have tried by editing standard jboss.xml at container configuration message-inflow-driven-bean at the max instances tag , as <container-pool-conf> 1 1 </container-pool-conf> still it is exhibiting concurrency . then i have trail with standard MDB container config setting ,i made them as <container-pool-conf> 1 1 </container-pool-conf> still my MDB is exhibiting concurrency . how can i control number of instances of my MDB . View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4160291#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...