anonymous wrote : Hi, | In our project we are using jbossAS 5.0.0CR1 with jboss-messaging-1.4.1CR1. Some of the jbm-server-session* and jbm-client-session* threads are getting created when creating and using topic connection and session. I see that these threads are not being closed even after the termination of the client. | How to reproduce this? Are you closing your Session/Connection? anonymous wrote : Also i need to know what is the configuration in jboss to define the Acknowledge mode as NO_ACKNOWLEDGE (this option is available in weblogic). | Maybe you should use http://java.sun.com/javaee/5/docs/api/javax/jms/Session.html#DUPS_OK_ACKN... View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4165105#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...