Yes, I understand the mapping is 'incorrect' and that you mentioned that. But since Oracle is in the QA round and works there, it *might* have something to do with differences in drivers (e.g. silently ignoring the error). But from what I recently understood, the tables are generated by hibernate in the tests, the already generated ddl is not used. Maybe you can see if that helps, at least until the 'real' issue is fixed View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4248158#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...