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https://issues.apache.org/jira/browse/OPENJPA-466?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kevin Sutter reopened OPENJPA-466:
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Based on Tim's comments and test case failures, it doesn't look like this JIRA
is completely resolved yet. Milosz, please work with Tim to come to a common
resolution. Thanks.
> Primary key constraint violated using (Oracle) sequence to generate ID in
> multithreaded app
> -------------------------------------------------------------------------------------------
>
> Key: OPENJPA-466
> URL: https://issues.apache.org/jira/browse/OPENJPA-466
> Project: OpenJPA
> Issue Type: Bug
> Affects Versions: 1.0.0, 1.0.1, 1.1.0, 1.2.0
> Environment: OpenJPA 1.0.0 (also tried 1.0.1 and 1.1.0-SNAPSHOT)
> Oracle XE 10g (JDBC driver 10.2.0.3.0)
> Windows XP Pro
> Reporter: Frank Le
> Assignee: Milosz Tylenda
> Priority: Blocker
> Fix For: 1.3.0, 2.0.0
>
> Attachments: OPENJPA-466.patch, OPENJPA-466.patch
>
>
> Here's how I annotate the ID:
> @Id
> @SequenceGenerator(name = "FooSeq", sequenceName = "seq_foo",
> allocationSize = 20)
> @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "FooSeq")
> private Long id;
> Here's how I create the (Oracle) sequence:
> CREATE SEQUENCE seq_foo START WITH 1 INCREMENT BY 1;
> I get a primary key unique constraint violated in a multithreaded app i.e. it
> doesn't happen in single-threaded!
> You can simply reproduce this error by either create blocking queue or
> blocking thread pool say size 5 to insert 10000+ object.
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