Yashendra, it would help if you told us exactly what you did. Also, see if this helps: http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4224936#... The instructions that abdujaparov and I posted are for switching DefaultDS to use a MySQL database, but setting up JMS is a subset of that. The only additional step you need to take, if you are not replacing DefaultDS, is to change all references to DefaultDS in the mysql-persistence-service.xml file to the JNDI name you used in mysql-ds.xml. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4231947#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...