WebLogic allows concurrent access to a Stateful Session Bean.by specifying
<allow-concurrent-calls>true</allow-concurrent-calls> in the `weblogic-ejb-jar.xml` descriptor file.

It is the precursor to: @AccessTimeout(-1)

See http://docs.oracle.com/javaee/6/api/javax/ejb/AccessTimeout.html

We have it already by spec. We need a KBase article that describes how to do this in JBoss EAP.