Hi!

We are using Oracle the UCP driver (Oracle Universal Connection Pool) in tomcat 6 configured like in Oracles http://www.oracle.com/technetwork/articles/oem/ucp-jdbc-tomcat-355431.html. The problem is that the driver starts a lot of threads (Thread-0 to 57, UCP-worker-thread-1 to 24) which aren't stopped when the server shuts down or the application is stopped. Tomcat emits loads of error messages like this:

> The web application [/xxx] appears to have started a thread named
> [Timer-17] but has failed to stop it. This is very likely to create a
> memory leak.

Is there anything I can do, or do we just have to live with these loads of fatal error messages?
Thanks so much!

Best regards,

Hans-Peter Störr

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