topic Re: "Exception in thread" error ................ in Operating System - Linux

"Exception in thread" error ................

hp_user_1 — Wed, 28 Sep 2005 08:29:07 GMT

Hi,

I am running JAVA based applications on hpux 11i with 4 cpus, 8gb memory and 6gb of swap. The dbc_max_pct and maxdsiz kernel parameters are 10 and 2gb respectively. Even then I am getting the following message:

"Exception in thread "CompileThread0" java.lang.OutOfMemoryError: requested 32756 bytes for ChunkPool::allocate
Possible causes:
- not enough swap space left, or
- kernel parameter MAXDSIZ is very small.
Java out of memory messages are marked with pid: 27207 in /var/adm/syslog/syslog.log."

Any help....

Re: "Exception in thread" error ................

Steven E. Protter — Wed, 28 Sep 2005 08:34:15 GMT

Please post kmtune output.

maxdsiz and maxdsiz64 may be relavent here.

swapinfo -tam

http://docs.hp.com/en/1219/tuningwp.html

SEP

Re: "Exception in thread" error ................

James R. Ferguson — Wed, 28 Sep 2005 08:39:54 GMT

Hi:

Start by looking at your swap space as your application runs or attempts to run:

# swapinfo -tam

If you don't see a line labeled "memory", then you don't have pseudo-swap enabled. Turning that on will help for swap reservation purposes.

Use 'kmtune' to look at your kernel settings. See the manpages for details. If you are running a 64-bit process, make sure you set 'maxdsiz_64bit' high-enough.

Remember that many kernel parameters are "fences" to prevent on badly written, or one malicious, process form consuming all of a resource.

See this guide, too:

http://docs.hp.com/en/TKP-90202/index.html

Regards!

...JRF...