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https://issues.apache.org/jira/browse/GROOVY-7733?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15114878#comment-15114878
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Itay Hudedi commented on GROOVY-7733:
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I added this System property with no success.
The memory in the Perm-Gen is remained.
> Can't unloaded Groovy classes - PermGen Erros
> ---------------------------------------------
>
> Key: GROOVY-7733
> URL: https://issues.apache.org/jira/browse/GROOVY-7733
> Project: Groovy
> Issue Type: Bug
> Components: groovy-jdk
> Affects Versions: 1.0
> Environment: linux,windows
> Reporter: Itay Hudedi
> Priority: Critical
>
> I have a legacy system that is extensively using Groovy version 1.0 and
> currently I can not update Groovy to an updated version. From time to time
> I'm getting a PermGen error due to the fact that all the Groovy
> classes/scripts are kept in memory even if no one is using them any more.
> I'm trying to figure out what is the correct way to unload those classes
> after I've finished using them.
> I'm using the following code to create the Script object:
> GroovyShell shell=new GroovyShell();
> Script script = shell.parse("ANY_TEXT");
> .....
> And I'm trying the following code to unload the generated class:
> MetaClassRegistry metaClassRegistry = MetaClassRegistry.getIntance(0);
> metaClassRegistry.removeMetaClass(script.getMetaClass().getClass());
> metaClassRegistry.removeMetaClass(script.getClass());
> metaClassRegistry.removeMetaClass(script.getBinding().getClass());
> script.setBinding(null);
> script.setMetaClass(null);
> script = null;
> Unfortunately, this doesn't seems to work because I keep on getting a PermGen
> error. How can I unloaded groovy classes and keep the PermGen size reasonable?
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