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https://issues.apache.org/jira/browse/OPENJPA-2093?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13167522#comment-13167522
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Mark Struberg commented on OPENJPA-2093:
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Actually I only suggest to use either deploy-time enhancement or build-time
enhancement as both javaagent and java6 class-re-transformation have the
problem that they pollute the SystemClassLoader with openjpa classes (which is
later causing issues in the webapps).
You could use the openjpa-maven-plugin
http://mojo.codehaus.org/openjpa-maven-plugin/usage.html
As of 2.2.0 this got moved to org.apache.openjpa (not yet released).
> How to increase the perfomance of JPA on creating the entitymanager instance.
> -----------------------------------------------------------------------------
>
> Key: OPENJPA-2093
> URL: https://issues.apache.org/jira/browse/OPENJPA-2093
> Project: OpenJPA
> Issue Type: Question
> Affects Versions: 1.2.1, 2.0.0
> Reporter: Rakesh Raghunath
> Original Estimate: 48h
> Remaining Estimate: 48h
>
> In my persistance.xml I am trying to enhance 20 classes. When i create the
> entity manager instance , it takes 30seconds to create the instance..
> Kindly provide me some tips to make it performant.
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