in mysql server 4.1.22 i have got the same exceptions (autocommit) than 5.1version, so it can't be sql server problem View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4064539#4064539 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4064539