"unnis" wrote : | can we change the property "connectionfactory-impl-class" and rebuild the rar | | Thanks & Regards | | unnis | No you build your own rar and deploy it as a tx-connection-factory instead of a local-tx-datasource. I suspect your CustomDataSource isn't really a resource adapter (since you don't have implementations of the other required classes). In which case you should ignore the -ds.xml and use an MBean to instantiate and bind your datasource into JNDI. But that's not really a topic for this forum, it's not JCA if there's no resource adapter. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4151460#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...