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From "Shapira, Yoav" <Yoav.Shap...@mpi.com>
Subject RE: Problem with proper shutdown of tomcat
Date Wed, 28 Jul 2004 12:59:53 GMT
Hi,
Amen!  The responses on the list so far have made my day! ;)

Yoav Shapira
Millennium Research Informatics


>-----Original Message-----
>From: Rodrigo Ruiz [mailto:rruiz@gridsystems.com]
>Sent: Wednesday, July 28, 2004 6:29 AM
>To: Tomcat Users List
>Subject: Re: Problem with proper shutdown of tomcat
>
>Maybe you have some non-daemon threads running. This would prevent the
>JVM from exiting. I would do the following:
>
>- Once the java process is "frozen", ask it a thread stack dump (I do
>not remember well, but I think in Linux you must send the process a
QUIT
>signal)
>- In the trace you should see all threads still alive. Check if any of
>them is yours. Such a thread could be the problem source.
>- Sometimes converting the thread in a daemon is enough. Other times
you
>need to ensure a clean stop, in which case you could implement it
>through a ServletContextListener.
>
>HTH,
>Rodrigo Ruiz
>
>dejw wrote:
>
>> Hi,
>> I have tomcat 4.1.30 installed on linux red hat 9 with java version
>> 1.4.1_03. Sometimes when I shutdown tomcat by using shutdown script
it
>> remains java process in memory which I have to kill manually. Only
>> then I can start up tomcat again. What can be the reason of this? I'm
>> using GridSphere portal framework with gridportlets whithin the
>> tomcat, maybe some bad written portlets or servlets are able to
freeze
>> java process of tomcat?
>>
>> Dawid Szejnfeld, PSNC
>>
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>
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