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https://issues.apache.org/jira/browse/OPENJPA-2399?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13683414#comment-13683414
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Rick Curtis commented on OPENJPA-2399:
--------------------------------------
Note, this problem only occurs when using runtime enhancement via the
-javaagent or the DynamicEnhancementAgent.
> Oracle JDK 1.7 seems to be causing an issue with OpenJPA
> --------------------------------------------------------
>
> Key: OPENJPA-2399
> URL: https://issues.apache.org/jira/browse/OPENJPA-2399
> Project: OpenJPA
> Issue Type: Bug
> Affects Versions: 2.2.0, 2.3.0, 2.2.2
> Reporter: garpinc
>
> I recently had to upgrade to JDK 1.7 and I'm having
> java.lang.LinkageError: loader (instance of
> sun/misc/Launcher$AppClassLoader): attempted duplicate class definition for
> name: "org/apache/openjpa/jdbc/identifier/DBIdentifier$DBIdentifierType"
> I previously reported this sometime ago here:
> http://openjpa.208410.n2.nabble.com/JDK-1-7-seems-to-be-causing-an-issue-with-latest-snapshot-td7581417.html#a7583248
> seems there has been no resolution. I've tried 2.2.0, 2.2.1 and
> 2.3.0-SNAPSHOT and all have same issue on Oracle JDK 1.7. Can someone please
> advise?
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