anonymous wrote : I can see this dependency in ejb-deployer.xml and uuid-key-generator.sar/META-INF/jboss-service.xml but Im not sure what should I do with it. Change the DefaultDS to MySQLDS in both the xml files ? The MBeans in these two files are dependent on the DefaultDS which you have removed by knocking off hsqldb-ds.xml from the $JBOSS_HOME\server\default\deploy directory . View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4047550#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...