Thursday, February 28, 2008

Having issues with JVM

As Apache is using JVM internally, we have to look at troubleshooting JVM too, before jumping onto Apache. See at jvm log files if you see "Full GC" having quiet frequently, I would suggest to make following changes and if you already have mentioned values, increase something higher then this :

1. jserv.conf
ApJServVMTimeout 180

wrapper.bin.parameters=-verbose:gc -Xmx1024M -Xms256M -XX:MaxPermSize=256M -XX:NewRatio=2 -XX:+PrintGCTimeStamps -XX:+UseTLAB

3. httpd.conf
Timeout 1800

4. ICX:Session Timeout 30 (profile value)

5. zone.propertiessession.timeout=1800000

Note : > 3,4,5 value has to be same

6. JDBC parameter changes in dbc file


7. Bounce Apache after above changes

Happy Troubleshooting !!!

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