Hi all,
I'm trying to debug a hanging problem raised by a web application that my
company developed using Codecharge Studio.

The application has an usual architecture: it gets some data from an Oracle
9i db and show them in a few jsp pages.

The problem is present during the login phase: I put username and password
in the right fields and then click the login button; usually the login is
almost istantaneous, but sometimes it hangs and avoid me to go to the next
page.

The same web app is installed in a staging server and here I have not
reproduced the same error yet (I've tried with no result...); en fact the
problem is only presents in the production environment (that is identical
for hw and sw to the stage one but for the presence of 2 host in the
front-end). 

All the log files existing (both from Tomcat than from Codecharge) are
configured to shows all debug infos, and they doesn't report any errors.
The memory footprint of Tomcat is below the upper limit of 1GB the I've
configured. (the total amount of physical memory is 4GB)
During the login the cpu is totally unloaded.

The operating system is RedHat AS and the kernel can manage since 14000
threads (I've monitored also this param).
Restarting tomcat solve the issue and in two situations the problem
disappeared magically:

1- the first time when I restarted a Jboss running in the same box
2- the second during my "log scouting" on the box the webapps started
working fine without any action (I was only reading sys info in /proc
directory)

As said before in the production environment are presents two Linux box in
the front end and the web app presents the same problem on both servers.

Can someone suggest me where to look in order to pickpoint the problem?

TIA
Alexio 


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