martin stanik created DERBY-6878:
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Summary: unload EmbeddedDriver by using System.gc()?
Key: DERBY-6878
URL: https://issues.apache.org/jira/browse/DERBY-6878
Project: Derby
Issue Type: Bug
Components: Documentation
Reporter: martin stanik
Priority: Minor
derby development doc suggests one can 'unload driver class':
> You cannot explicitly request that the JVM unload a class, but you can ensure
> that the EmbeddedDriver class is unloaded by using a System.gc() ....
this advice is unfortunate, because:
1. it is wrong - one can not unload single class.
only whole classloader with all it's classes might be unloaded (this needs
be organized ahead)
2. one may get false impression unloading driver is good
practice/desirable/necessary.
i believe it is not.
i suggest to remove the advice unless there is provided a scenario when
unloading driver is needed + explanation how to do it properly (derby driver
needs be loaded into extra classloader).
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