Debugging authentication can be tricky. If you think JDBC is tricky, try LDAP. First, a point and a question: 1) The JBoss Security documentation calls for the Data source to be defined as java:/jaasDS 2) Do you have this datasource defined and is it visible in the jmx-console? You can find samples for your database in docs/examples/jca. Once the database is visible to JBoss, you will have to enable TRACE logging in conf/log4j.xml in order to diagnose authentication activity. You might have to change the "Threshold" for the log messages. Something like this should do it: <appender-ref ref="FILE"/> Let us know when you get it working. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3962574#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...