1: Not internal 2: It's a HSQLDB problem. Can only be used from e.g. one datasource. Use a real RDBMS instead View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4103354#4103354 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4103354