I have found the reason for my problem.
As menoined in https://community.jboss.org/thread/196628
it was the RMI timeout.
My mistake was to set the protocoll in the container config and not the default protocoll see: https://issues.jboss.org/browse/ARQ-579
I'm wondering if I had have the posibility to find out what happens by searching the log.
There was no hint that a timeout appear.
What's left is that I can't use the JMX protocoll without setting the timeout default value manuall.
Has someone a solution/workaround for this?