There was an issue earlier with how JBossCache handles transaction rollback with Weblogic, do a search. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4094697#4094697 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4094697