It appears that either you removed the server/default/deploy/hsqldb-ds.xml file, or changed the datasource name in that file to "JmsXA". This file declares the DefaultDS data source, the absence of which is what the first set of errors are about. Regarding the JNDI problem, the name "KMLEnterpriseApp" does not appear anywhere in the JNDI tree. The text "namespace of the KMLEnterpriseApp.ear/KMLEnterpriseApp-war.war application" is a description of the owner of that particular namespace. It is the stuff after that that is in the namespace ('UserTransaction', 'ORB', etc). View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4106543#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...