modifying kernel params for java.lang.outofmemoryerror

[Mandosa]

i have been working through the forums trying to deal with a nagging java.lang.outofmemoryerror. i seem to be making progress, but am still getting the error about once or twice a day. i've increased java heap sizes, and done some kernel tuning. most documention seems to point to the max_thread_proc value of being most important. i've increased it, but have seen recomendations for numbers still quite higher than what mine is currently set. Is there some guide for setting this parameter according to system specs? I don't want to set it too high and introduce new problems. max_thread_proc is currently 512, was 128.

HPUX 11.11
2GB RAM
Java 1.3.1.09

[James R. Ferguson]

Hi Mark:

It is most informative if you post the standard 'errno' value along with any textual message.

Regards!

...JRF...

[Steven E. Protter]

Shalom Mark,

There are recommendations on the hp web site http://www.hp.co/go/java

Patches, kernel paramaters, everything.

Also check, maxuprc and nproc

SEP

[Mandosa]

increased max_thread_proc again from 512 to 1024. increased nkthreads to 4096. better, but still went south after a while. finally i have restarted java with the -green paramater and so far so good. as far as a know, the -green paramater controls the threading method.

[Raj D.]

Hi Mark,

Have you installed the latest Java Patches.

Check this out:

HP-UX 11.11 patches required for Javaâ ¢

Also:
http://www.hp.com/products1/unix/java/patches/index.html


Cheers,
Raj.

[Srini Jay]

Mark,
You can use the HP jConfig tool downloadable from http://www.hp.com/products1/unix/java/ to find which kernel parameter needs tuning and all.

If after changing the parameters also you get the out of memory exception, do post the complete exception listing (error log or whatever you have!)

-Srini