Appserver tries to create the connection pool during startup. As part of it, it creates managedConnectionFactory.
Seems like the resource-adapter you have deployed is trying to start a thread that is already started.
Could you post the code snippet of
"ArgoCoreManagedConnectionFactoryImpl.setResourceAdapter" ?
[Message sent by forum member 'jr158900' (jr158900)]
http://forums.java.net/jive/thread.jspa?messageID=262357