clodeindustrie, I suspect ojdv14.jar and xdb.jar can work together, but that the problem is with xdb.jar and JNDI. Did you follow instructions at oracle's site about how to used JNDI to access XML DB Resource? They describe how to specify a JNDI provider to use. If you do not do this, then JBoss' JNDI service is used. This may cause a conflict. The following is link to one version of the API (not sure which version you are using) http://download-east.oracle.com/docs/cd/B10501_01/appdev.920/a96620/xdb21... let us know..., cgriffith[/url] View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3958445#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...