Hi, I am trying to work out how JBoss supports this part of the J2EE 1.3 spec (see end of post). Does JBoss support the concept of application components i.e. can I deploy an EAR file which makes use of a Datasource whose application resource name is AccountDS and configure it to use a component resource name of AccountCust1DS. Then deploy the same EAR file separately such that it uses a different component resource name of AccountCust2DS. The EAR file in both cases is identical and uses the application resource name of AccountDS. The following is from http://www.ibm.com/developerworks/websphere/techjournal/0410_woolf/0410_w... This change is reflected in a single paragraph that was added to the J2EE 1.3 specification, in section J2EE.5.4.1.2, "Declaration of Resource Manager Connection Factory References in Deployment Descriptor." The new paragraph says: A resource manager connection factory reference is scoped to the application component whose declaration contains the resource-ref element. This means that the resource manager connection factory reference is not accessible from other application components at runtime, and that other application components may define resource-ref elements with the same res-ref-name without causing a name conflict. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4204100#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...