We are using database engine as innoDB. which is default provided by JBoss Messaging 1.4.0.SP3 server Thanks View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4188725#4188725 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4188725