Ok, I finally tracked this down to the ManagedConnectionFactoryParserDeployer creating duplicate ManagedObjects. It overrides the ManagedObjectCreator.build method, but still calls the super version which also creates ManagedObjects. It looks like this is being done to register the ManagedObject under both its jndi name, and the attachment name. This gets back the naming/template issue Alexey was having, so I'll need to look at that. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4127662#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...