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https://issues.apache.org/jira/browse/DERBY-2905?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12993647#comment-12993647
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Rick Hillegas commented on DERBY-2905:
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Hi Kathey. Yes the user-visible functionality is visible on JDK 7. The problem
also appears on JDK 6 in the form that the registered driver is different after
reloading the engine. That will cause tech support a lot of mischief down the
road because it will give rise to subtle problems which depend on whether an
action is performed before or after reloading the engine. I have provided a
test case which shows the problem of different drivers on JDK 6: ww.java. -1 to
your suggestion that this is a JDBC 4.1 problem.
> 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
> 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, 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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