Please post your complete unit test. We are also using HSQLDB in development so the error should pop up with us too. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4248493#4248493 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4248493