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https://issues.apache.org/jira/browse/DERBY-4183?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12754965#action_12754965
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Knut Anders Hatlen commented on DERBY-4183:
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Regarding the memory depletion, the permgen space is just one part of the heap, 
and increasing its size does not help if you're actually running out of 
non-permgen heap space. Here are the memory parameters I specify when I run the 
tests (note that I increase both the max heap space and the max permgen space): 
-Xmx512M -XX:MaxPermSize=128M

> Our regression tests use various jar files for which we don't have build 
> scripts.
> ---------------------------------------------------------------------------------
>
>                 Key: DERBY-4183
>                 URL: https://issues.apache.org/jira/browse/DERBY-4183
>             Project: Derby
>          Issue Type: Improvement
>          Components: Test
>    Affects Versions: 10.6.0.0
>            Reporter: Rick Hillegas
>         Attachments: status.diff, testjars.diff, testjars.diff, 
> testjars.diff, testjars.diff
>
>
> We should add build scripts for these jar files. This is a mini-project 
> suitable for a newcomer.

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