There are examples shipped with JBoss org.jboss.resource.JBossResourceException: No XADataSourceClass supplied! I'd guess it's looking for this XML element <xa-datasource-class> One of their examples from /examples/jca/generic-ds.xml (which is under your JBoss installation directory) looks like this | <!-- Here's an xa example --> | <xa-tx-datasource> | <jndi-name>GenericXADS</jndi-name> | <xa-datasource-class>[fully qualified name of class implementing javax.sql.XADataSource goes here]</xa-datasource-class> | <xa-datasource-property name="SomeProperty">SomePropertyValue</xa-datasource-property> | <xa-datasource-property name="SomeOtherProperty">SomeOtherValue</xa-datasource-property> | ... etc... | View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4214287#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...