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https://issues.apache.org/jira/browse/OPENJPA-1665?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13009822#comment-13009822
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Heath Thomann commented on OPENJPA-1665:
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Committed changes to 2.0.x under revision 1084264.
> Problems when using auto incrementing colums that start at zero
> ----------------------------------------------------------------
>
> Key: OPENJPA-1665
> URL: https://issues.apache.org/jira/browse/OPENJPA-1665
> Project: OpenJPA
> Issue Type: Bug
> Affects Versions: 2.0.0
> Reporter: Rick Curtis
> Assignee: Rick Curtis
> Fix For: 2.1.0
>
>
> This issue was reported on the users mailing list[1].
> The issue is that it is possible when using auto generated ids that there is
> a current entity in the persistence context that has an id of zero, and by
> default when a new entity is created it also has an id of zero. When
> persisting the second entity, OpenJPA incorrectly detects that there are
> multiple entities with the same id in the context even though the new id
> doesn't have an id from the database yet.
> [1]http://openjpa.208410.n2.nabble.com/An-object-of-type-src-StatusUpdate-with-oid-0-already-exists-in-this-context-another-cannot-be-persi-td5030272.html#a5030272
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