It looks like this was a problem with the microsoft driver. I replaced it with the jtds driver and the problem went away. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3966101#3966101 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3966101