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https://issues.apache.org/jira/browse/OFBIZ-2353?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14115632#comment-14115632
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Jacques Le Roux edited comment on OFBIZ-2353 at 8/29/14 7:17 PM:
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I have to try it (though I trust you), but will your change be sufficient to 
prevent collisions (primary key violations) in a cluster or will we still need 
to use SELECT FOR UPDATE? I mean in a cluster.


was (Author: jacques.le.roux):
I have to try it (though I trust you), but will your change be sufficient to 
prevent collisions (primary key violations) in a cluster or will we still need 
to use SELECT FOR UPDATE?

> SequenceUtil  may generate duplicate IDs in Load Balancing mode
> ---------------------------------------------------------------
>
>                 Key: OFBIZ-2353
>                 URL: https://issues.apache.org/jira/browse/OFBIZ-2353
>             Project: OFBiz
>          Issue Type: Bug
>          Components: framework
>    Affects Versions: Release Branch 4.0, Release Branch 09.04, Trunk
>            Reporter: Philippe Mouawad
>            Assignee: Jacopo Cappellato
>            Priority: Critical
>             Fix For: Release Branch 10.04, Release Branch 11.04, Trunk
>
>         Attachments: OFBIZ-2353 SELECT FOR UPDATE solution.patch, OFBIZ-2353 
> SELECT FOR UPDATE solution.patch
>
>
> If Ofbiz is deploy on 2 servers in Load Balancing Mode
> SequenceUtil will generate duplicate IDs because synchronization is done at 
> JVM level instead of doing it in DB.
> A good replacement implementation would be:
> org.hibernate.id.enhanced.TableGenerator
> But it would involve a dependency on Hibernate
> Philippe
> www.ubik-ingenierie.com



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