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Arvind,

On 4/7/2011 9:32 AM, S Arvind wrote:
> Recently in our web application deployed in tomcat, some weird problem is
> raising very frequently.
> Some of the servlet <http://www.coderanch.com/forums/f-7/Servlets> or class
> in that web app <http://en.wikipedia.org/wiki/Web_app> are getting unloaded.

Most folks on the list have heard of servlets and web apps, but thanks
for the references.

> So when the request comes it is sending 404 status or class-not-found
> exception.

Can you give some specifics?

> So what we do is reload the context/application from the tomcat manager and
> then it will work fine.

Do those same requests then respond the way you expect?

> Searched lot but cant able to find solution to this unloading or
> classnotfound problem.
> Can anyone suggest me why this is happening.

What version of Tomcat are you running? Does this happen only under
certain circumstances (high load? no load? when re-deploying a JSP,
etc.) or does it happen all the time? Please post a full stack trace of
any exception you have encountered.

- -chris
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