Oracle Message NNO-00633 - detected fatal delegation loop involving server string

ERRORdetected fatal delegation loop involving server string
CAUSEthe server detected a fatal delegation loop while forwarding a request. A loop occurs when the servers topology data indicates that it should forward a request to itself. The server immediately shuts down in response to this error.
ACTIONAn internal error not normally visible to the user. For further details, turn on tracing and restart the server. If the error persists, contact Worldwide Customer Support.