Re: [Tomcat] [daemon] java.lang.OutOfMemoryError unable to create new native thread

[ovidiu asiminei <ov...@gmail.com>]

Hi Steve,

Also,  a good tool for monitoring Tomcat  is Lamda Probe

http://www.lambdaprobe.org/d/index.htm


Regards,

Ovidiu

On Tue, Feb 3, 2009 at 9:31 AM, Steve Cohen <sc...@javactivity.org> wrote:

> We have an application that runs under Tomcat under RHEL 5.0  and is
> launched by a jsvc daemon.
> It chugs along seemingly fine on several servers, yet yesterday crashed on
> one of them with the above exception seemingly without experiencing any kind
> of abnormal load.  I am trying to get a handle on this.
> System is
>
> $ uname -a
> Linux  2.6.18-92.1.22.el5 #1 SMP Fri Dec 5 09:29:46 EST 2008 i686 i686 i386
> GNU/Linux
>
> Java version:
> java -version
> java version "1.5.0_16"
> Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_16-b02)
> Java HotSpot(TM) Client VM (build 1.5.0_16-b02, mixed mode, sharing)
>
> no special JVM memory settings are used when launching tomcat, just the
> default memory allocations.  I have read in some places that this particular
> form of OutOfMemoryError is actually made worse by increasing the memory
> size.
>
> I need to deploy some thread and memory monitoring setup to get a handle on
> this.
>
> Can someone suggest a path forward here?
>
> Thanks.
>
>
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-- 
ovidiu asiminei