Saumil,

On 2.4.2013 5:01, saumil shah wrote:
I recently deployed one of the COTS products SAP Business Objects. When the product was 
deployed , everything seemed to run fine but yesterday we started experiencing 
"Service is unavailable" error , upon enabling DEBUG logs in Tomcat , we saw 
the error below with memory leak message. We were wondering what could have caused it ....
The Tomcat is 64 bit , JVM is 64 bit but the applications deployed are 32 bit 
webapps .... we say Tomcat6 process becoming unresponsive around 2GB mark.

There is a Wiki page [1] that descibes most couses of memory leaks.

Until webapp developers check and fix those leaks, you might mitigate them by restarting Tomcat every time you need to redeploy or restart any of your webapps. If that does not help, then you have some other problem. You could investigate further by analyzing thread activity during hangs using thread dumps [2] or monitoring tools like JConsole.

-Ognjen

[1] https://wiki.apache.org/tomcat/MemoryLeakProtection
[2] https://wiki.apache.org/tomcat/HowTo#How_do_I_obtain_a_thread_dump_of_my_running_webapp_.3F

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