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From Mark Thomas <>
Subject Re: Discrepancy between Tomcat's connection pool and tomcat's report on memory leaks
Date Thu, 05 Apr 2012 11:20:56 GMT
On 04/04/2012 21:59, Hermes Flying wrote:
> Thank you for your explanation. I will take this to H2 but I have one
> more question on your comment:
>>> Nope. It is a memory leak in the JDBC driver which is why Tomcat
>>> is reporting it. When a web application shuts down, nothing
>>> should be retaining a reference to the web application class
>>> loader. That the JDBC driver does, is a bug in the JDBC driver.
> My question is: is this leak a general problem that should concern me
> or something that is an issue only on application undeployment?

You will get a memory leak when the application is stopped for any
reason. If this happens at Tomcat shut down it isn't that much of an
issue. At any other point it is a problem.


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