This exception is thrown when the container has encountered an unresolvable
system exception that make this Container unable to process requests.
A breakdown in communication with one of the primary services or a
RuntimeException thrown within the container (not by a bean) is are good
examples.
The org.apache.openejb.SystemException represents a serious problem with the
Container or request.
NOTE: This exception bears no resemblence to the unchecked exceptions and
errors that an enterprise bean instance may throw during the
execution of a session or entity bean business method, a message-driven bean
onMessage method, or a container callback method (e.g. ejbLoad).
See InvalidateReferenceException for this.