Process not responding to kill -3 PID (SIGQUIT signal)

[Abhinay Kampasi]

Hi,
I am running BEA WebLogic Server 8.1 on HP-UX 11.0. I added my own security realm in weblogic, however after doing so the server begins to hang. Inorder to debug the problem, I tried to take thread dump of the java process running weblogic by using kill -3 PID. However the process does not respond to this signal. I have attached the tusc output of the process and its response to the SIGQUIT signal. Is there any way I can force the java process to produce thread dumps.

Thanks and Regards,
Abhinay Kampasi

[Bruno Ganino]

http://www.hp.com/products1/unix/java/infolibrary/prog_guide/signals.html

[Bruno Ganino]

http://www.findarticles.com/p/articles/mi_m0MLW/is_2_3/ai_113473026

[Krishnan Viswanathan · Accepted solution]

Please look the application logs directory. It will be embedded in the log file.

For example $WEBLOGICHOME/product/v8.1/AppServer/logs

Typically, some of the application vendors re-direct the core dumps into their log directory (this is true because you are using their "java" and not HP's java)

Try kill -6 . It will create a separate "core" file in the application directory. This file may or may not give useful information

Also, please note that weblogic is notorious for "swap reservation". So you might want to consider increasing swap space and also maxdsiz and maxssiz kernel parms.

Hope this helps

[Abhinay Kampasi]

Hi Krishnan,
The kill -6 PID did produce a core of the hung process. How do I analyse this core?

Thanks and Regards,
Abhinay