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From "Mark Struberg (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (OPENJPA-2093) How to increase the perfomance of JPA on creating the entitymanager instance.
Date Mon, 12 Dec 2011 15:10:30 GMT

    [ https://issues.apache.org/jira/browse/OPENJPA-2093?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13167522#comment-13167522
] 

Mark Struberg commented on OPENJPA-2093:
----------------------------------------

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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