anonymous wrote : I have just modified hsqldb-ds.xml file in deploy/ folder And what did you change in that file? Can you post the contents of that changed file(remember to wrap the contents in a code block by using the Code button in the message editor window, while posting)? By the way, why did you change that file? Are you trying to deploy your oracle datasource? If yes, then all you have to do is create a file name *-ds.xml (ex: oracle-ds.xml) with appropriate contents as mentioned at http://wiki.jboss.org/wiki/Wiki.jsp?page=SetUpAOracleDatasource and place that file in the deploy folder. Also, you might want to have a look at http://wiki.jboss.org/wiki/Wiki.jsp?page=ConfigDataSources View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4104839#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...