i think you need to add something like <many-to-one name="script" | column="SCRIPT_" | foreign-key="FK_NODE_SCRIPT" /> | to the Fork.hbm.xml this will only be part of 3.2 because we don't want to change the db schema in micro release updates (e.g. from 3.1.2 to 3.1.3) let me know if this doesn't help. don't forget to regenerate the DDL from the mappings View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3980690#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...