I highly doubt that you have a class called "login_user", so I'm sure this query never worked in any version of Hibernate. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4023503#4023503 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4023503