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From Christopher Schultz <>
Subject Re: tomcat hang/freeze under windows
Date Wed, 29 Aug 2007 14:47:16 GMT
Hash: SHA1


Roger Parkinson wrote:
> Useful stuff, thanks. We don't use any filters in the app, but we do
> have a db. I'll get them to check it out for deadlocks and get a
> stacktrace.
> Still a puzzle why a little demo setup gives this and the live apps
> don't. It will be interesting when we know.
> Anyway, good general approach advice. Just what I asked for, thanks.

It also might be a connection pool exhaustion. Perhaps something in your
demo environment is different, like the amount of time lag between uses
of the database. If your connections are becoming stale and you're not
prepared to recycle them, you might end up with a pool full of stale
connections, and wait forever for a fresh one.

You could also be depleting your connection pool, in which case you've
got an empty pool instead of a useless one. With no other information,
I'd suspect a connection leak. But since it's working in production, I'm
at a loss...

- -chris

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