[ http://issues.apache.org/jira/browse/GERONIMO-453?page=all ]
     
Matt Hogstrom closed GERONIMO-453:
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Transmitting file data .
Committed revision 332384.

> DerbySystemGBean doesn't call System.gc() in doStop() and soFail() as 
> recommended in the Derby doco
> ---------------------------------------------------------------------------------------------------
>
>          Key: GERONIMO-453
>          URL: http://issues.apache.org/jira/browse/GERONIMO-453
>      Project: Geronimo
>         Type: Bug
>     Versions: 1.0-M4
>     Reporter: John Sisson
>     Assignee: Matt Hogstrom
>      Fix For: 1.0

>
> The Derby doco in the section "Shutting Down the System" at 
> http://incubator.apache.org/derby/manuals/develop/develop12.html says the 
> following:
>     Typically, an application using an embedded Derby engine shuts down Derby 
> just before shutting itself down.
>     However, an application can shut down Derby and later restart it in the 
> same JVM session. 
>     To restart Derby successfully, the JVM needs to unload 
> org.apache.derby.jdbc.EmbeddedDriver, 
>     so that it can reload it when it restarts Derby. (Loading the local 
> driver starts Derby.)
>     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() to force it to garbage collect 
> classes that are no longer needed.
>     Running with -nogc or -noclassgc definitely prevents the class from being 
> unloaded and makes you unable
>     to restart Derby in the same JVM.
> Anyone have any objections to the recommendation of calling System.gc()?

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