"PeterJ" wrote : If you plan to use JMS, you have to use a database, whether the embedded HSQLDB (not recommended) or an external database (such as MySQL). Thank you for your comment. but I guess it's remove hsqldb-ds.xml and delete related datasource definition line for ejb from *.xml and I use null-persistence-service.xml or file-state-service.xml instead of jdbc persistence for JMS. Is it incorrect ? best regards, hiro View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4020377#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...