How to find out the position in which an application hangs

Hi,
is there any possibility to find out the position in a source, in which a deployed application hangs?
For example, there is an endless loop in an application, which is already deployed. In runtime the application hangs in this loop. How can I findout in which line the application hangs?
In other words, how can I see the stack of a certain process,for example, http_workerx?
Regards,
Ali
Message was edited by:
Ali Maraschi-Schouschtari

Hi Ali,
With SAP NetWeaver Composition Environment (CE) 7.1 SP3 it is very easy.
1.) Open the SAP Management Console
2.) Go to AS Java Threads tree node - you will see all the threads that are currently started on the system
3.) Check for threads that are colored in red - it takes about 30 sec the system to detect that an HTTP thread (http_workerx), as it is in your case, is hanging/executing endless loop.
4.) Right click on the hanging thread (colored in red) and pick 'Callstack' from the pop-up menu
5.) In the new window you will see the stack-trace showing what exactly this hanging thread is doing at the moment.
With the previous versions (or SPs) you need to apply a little bit more technical skills for the same result. (1) you need to do produce thread dump of the server that is suspected to have hanging thread and (2) to analyze this thread dump (check what the threads in Running state are doing). As it is in your case with the HTTP worker threads, their names are also printed in the thread dump, so you can focus only on them.

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