Standaard thread dump analyser tools are not good enough to analyse the thread dumps of OSB. The Project Kenai tool ThreadLogic can be very usefull for analysing OSB stuck threads. The project URL is:
OSB shows most of the time not enough information about the stuck threads. Adding workmanagers to Business Services en Proxy Services can show much more information on the console (Console / Monitoring -> Threads) and in the thread dump.