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https://issues.apache.org/jira/browse/DERBY-2905?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13212640#comment-13212640
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Sebastian edited comment on DERBY-2905 at 2/22/12 8:26 AM:
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I have the feeling this bug is not fixed or I have a similar problem.
I use tomcat 6.0.26 and an embedded derby(Bundle-Name: Apache Derby 10.8
Bundle-Version: 10.8.2000002.1181258).
There is always the following line logged into the catalina.log on stopping my
tomcat.
SEVERE: A web application registered the JBDC driver
[org.apache.derby.jdbc.AutoloadedDriver40] but failed to unregister it when the
web application was stopped. To prevent a memory leak, the JDBC Driver has been
forcibly unregistered.
> Shutting down embedded Derby does not remove all code, the AutoloadDriver is
> left registered in the DriverManager.
> ------------------------------------------------------------------------------------------------------------------
>
> Key: DERBY-2905
> URL: https://issues.apache.org/jira/browse/DERBY-2905
> Project: Derby
> Issue Type: Bug
> Components: JDBC
> Affects Versions: 10.2.2.0, 10.3.1.4, 10.4.1.3
> Reporter: Daniel John Debrunner
> Assignee: Lily Wei
> Fix For: 10.8.1.2
>
> Attachments: DERBY-2905-2.diff, DERBY-2905_1.diff, DERBY-2905_3.diff,
> DERBY-2905_part2_1.diff, DERBY-2905_part2_2.diff, DERBY-2905_part2_2_1.diff,
> DERBY-2905_part2_2_2.diff, DERBY-2905_part2_2_3.diff, DERBY-2905v0.diff,
> DERBY-2905v0.stat, DERBY-2905v1.diff, DERBY-2905v1.stat, DERBY-2905v3.diff,
> DERBY-2905v3.stat, Main.java, Mainv1.java, Repro2905.java,
> derby-2905-01-aa-fixAutoloadedDriverReload.diff, releaseNote.html,
> releaseNote.html, releaseNote.html, releaseNote.html, releaseNote.html,
> releaseNote.html, ww.java
>
>
> After a shutdown of the embedded driver the AutoloadDriver is not
> unregistered from DriverManager. However it does not support any future
> loading of connections so it has no value in remaining registered. Since the
> DriverManager class will remain forever, this means the Derby code will
> remain forever in the JVM, even if Derby was loaded by a separate class
> loader.
> Regression from 10.1 since before the AutoloadedDriver the internal driver
> did unregister itself from the DriverManager on a shutdown.
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