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From "Tim McConnell (JIRA)" <j...@apache.org>
Subject [jira] Updated: (OPENJPA-466) Primary key constraint violated using (Oracle) sequence to generate ID in multithreaded app
Date Wed, 04 Feb 2009 03:19:59 GMT

     [ https://issues.apache.org/jira/browse/OPENJPA-466?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Tim McConnell updated OPENJPA-466:
----------------------------------

    Assignee: Tim McConnell

> 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
>         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: Tim McConnell
>            Priority: Blocker
>
> 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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