I have had a somewhat similar problem with TC 5.0.19 running on Windows
2000 Server with Suns JDK 1.4.2_03 and ISAPI 2.0.2 redirector.
All my applications being redirected from IIS to Tomcat stopped responding
leaving the browser utterly white. None of the log files reported any
errors except for these which I got and still get in my stdout.log:

27-04-2004 08:52:39 org.apache.jk.common.HandlerRequest invoke
INFO: Unknown message 0
27-04-2004 08:57:56 org.apache.jk.common.HandlerRequest decodeRequest
WARNING: Error registering request
27-04-2004 08:57:57 org.apache.jk.common.HandlerRequest decodeRequest
WARNING: Error registering request

but as far as I can tell from the post on the dev-list these are
non-critical and should be removed with TC 5.0.22?

The admin and manager application being served though port 8080 worked
flawless though which also made me believe it was a due to exhausted db
connections. So I ran the very same applications on my TC 5.0.16 (same JDK
and ISAPI redirector) test box leaving only one db connection per
application. This gave me nothing though as the test box kept going and
going without a single hickup...

Finally I installed version 2.0.4 of the ISAPI redirector, allowed TC to
reclaim unused db connection and fine tuned my existing db connections
pools using JMeter. This has helped me and I assume it is either the ISAPI
redirector or the greater amount of connections doing the job as the log
says nothing about db connections being reclaimed (except for a leaking
test app i tried as a test)

I know it is somewhat vague but anyway...

/Thomas





Denis Haskin <Denis@(protected)>
26-04-2004 22:56
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    Vedr.: Re: Tomcat 5.0.19 Stops Responding



My guess would be a thread deadlock. You don't say what platform you're
on (or which JVM), but I would get a thread dump and see what you can
glean from that.

That shouldn't hang *all* the web apps (although I suppose there are
some scenarios where it could).

dwh


Kyle Sampson wrote:

>I'm deploying a webapp in Tomcat. It initially works fine, but after it
has
>been running for a couple of days, it stops responding. Specifically,
going
>to any page in the web app keeps the browser waiting for a response.
>
>



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