Properties defined on the ra.xml, are being set on org.jboss.messaging.ra.JBMResourceAdapter. Which contains the resource-adapter global config. Properties defined on the @MDB ActionConfigs, are being set on org.jboss.messaging.ra.inflow.JBMActivationSpec, which contains the MDB Inbound configuration. Properties defined on tx-connection-factory, are being set on org.jboss.messaging.ra.JBMMCFProperties, which contains the Connection Outbound configuration. Currently, the connection is only defined on JBMResourceAdapter. Both the inbound and outbound are aways getting the connection from this global place on the RA. My proposal, is to add properties on both the Spec and JBMMCFProperties. If the user specify any connection property at JBMMCFProperties or JBMResourceAdapter I will ignore the global-config, giving the user the sensation of overriding the property. This is actually the same way it is done with other properties such as User, Password and destination-type. The ra.xml defines the default/global value and that could be changed at either MDB of tx-connection-factory. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4226585#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...