No, there was no any hot deployment. We deploy our application WAR file and
restart tomcat. This is a must for us. And there was no any change to Log4J
library jar file.

BR,
Shahnaz Ali.



On Thu, Apr 8, 2010 at 12:13 PM, Yair Ogen <yairo...@gmail.com> wrote:

> Hot deploy is when you load a new version of a war for example while the
> server is still running. This triggers a chain of init actions on the
> server
> side.
>
> I see from the logs the doGet method in the servlet caused a init of log4j
> configuration.
>
> try looking in that direction. I think this should not happen.
>
> The exception logged indicates a class file was changed in the middle of
> using it (or something like that). these things sometime happen when using
> hot deploy.
>
> On Wed, Apr 7, 2010 at 4:40 PM, Shahnaz Ali <shaan20...@gmail.com> wrote:
>
> > Hi,
> >
> > Thanks for your quick response.
> >
> > This crash happens only once so far in a year. After restart of OS and
> > Tomcat, without any change system is working fine again. This is a telco
> > system, so they need to know reason of crash. And if possible solution of
> > that.
> >
> > Actually this is a server side application which receives calls. At one
> > time
> > it may receive around 150 concurrent calls. When I check logs, i notice
> > there were around 900 call sessions. No clue how it happened.
> >
> > Application is in production, so we just cant change the configuration so
> > easily. We haven't tried with Java 6.
> >
> > Current Log4J version is: log4j-1.2.8.jar
> > Java Version is: 1.5
> > OS: Redhat Linux
> >
> > Please explain, what do you mean by "hot deploy" here?
> >
> >
> > BR,
> > Shahnaz Ali.
> >
> >
> >
> > On Wed, Apr 7, 2010 at 6:10 PM, Michael Erskine <mse...@googlemail.com
> > >wrote:
> >
> > > On 7 April 2010 13:19, Shahnaz Ali <shaan20...@gmail.com> wrote:
> > > > We have IVR application running on tomcat web application server on
> > > Redhat
> > > > linux OS, using Log4J. This is a mission critical server application
> > with
> > > > good amount of call load.
> > > >
> > > > Recently we faced JVM (tomcat) crash and major of errors before crash
> > > > pointing to Log4J. We are not expert in Log4J, though of sharing with
> > you
> > > > and take your feedback. If you can point out the reason and
> corrective
> > > > action, will be great.
> > >
> > > Tomcat running as root? 1080 threads?  :o
> > >
> > > I can see the PropertyConfigurator failing repeatedly - once for each
> > > HTTP daemon?
> > > Is this something to do with...
> > > -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager
> > >
> > > Does this Log4j configuration usually work?
> > > Have you tried running on a recent version of Java 6?
> > >
> > > Regards,
> > > Michael Erskine.
> > >
> > > ---------------------------------------------------------------------
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> > > For additional commands, e-mail: log4j-user-h...@logging.apache.org
> > >
> > >
> >
>

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