Re: [Wrapper-user] JVM appears hung and unable to start JVM

[Leif M. <lei...@ta...>]

Sameer,
There were a couple bugs in the 3.2.3 that have been fixed in relation
to restarts in 3.3.0 and later versions.   Would it be possible for
you to try upgrading to a newer version?

Please see the release notes for a full list of improvements.
http://wrapper.tanukisoftware.com/doc/english/release-notes.html

I think this is the problem you are seeing.  Fixed in 3.3.0:
"Fix a problem where the UNIX versions of the Wrapper would shutdown
rather than restarting a frozen JVM if the arrival of the SIGCHLD
signal from the old JVM process was delayed by more than a second or
two."

Cheers,
Leif

On Wed, Aug 10, 2011 at 6:47 PM, Naik, Sameer <Sam...@bm...> wrote:
>
> Hello All,
>
> We are using Java Wrapper Service in production environment and are facing problem of JVM appearing hung and unable to start JVM.
>
> What could be the possible reason for
>
> 1)      JVM appearing hung ?
>
> 2)      Wrapper Service Unable to launch a JVM ?
>
>
>
> Log snippet below :
>
> ERROR  | wrapper  | 2011/08/07 17:32:13 | JVM appears hung: Timed out waiting for signal from JVM.
>
> ERROR  | wrapper  | 2011/08/07 17:32:13 | JVM did not exit on request, terminated
>
> STATUS | wrapper  | 2011/08/07 17:32:18 | JVM exited in response to signal SIGKILL (9).
>
> ERROR  | wrapper  | 2011/08/07 17:32:19 | Unable to start a JVM
>
> STATUS | wrapper  | 2011/08/07 17:32:19 | <-- Wrapper Stopped
>
>
>
>
>
> Wrapper Version :  Version 3.2.3
>
> OS :   Red Hat Enterprise Linux Server release 6.0 (Santiago)
>
>
>
> -Thanks and Regards,
>
> Sameer Naik
>
>