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From "Kevin Sutter (JIRA)" <j...@apache.org>
Subject [jira] Commented: (OPENJPA-63) Better pessimistic lock support for DB2 v8.2+
Date Fri, 27 Oct 2006 14:06:17 GMT
    [ http://issues.apache.org/jira/browse/OPENJPA-63?page=comments#action_12445193 ] 
            
Kevin Sutter commented on OPENJPA-63:
-------------------------------------

After requesting a vote via the dev mailing list, we've determined that we're not going to
worry about supporting the back-level JDK 1.3 interfaces.  So, Igor's usage of the new methods
on DelegatingDatabaseMetaData should be okay.

> Better pessimistic lock support for DB2 v8.2+
> ---------------------------------------------
>
>                 Key: OPENJPA-63
>                 URL: http://issues.apache.org/jira/browse/OPENJPA-63
>             Project: OpenJPA
>          Issue Type: Improvement
>          Components: jdbc
>         Environment: IBM DB2 UDB v8.2 or later
>            Reporter: Igor Fedorenko
>         Attachments: db2-selectForUpdate.patch
>
>
> There is new SELECT "FOR READ ONLY WITH RS USE AND KEEP EXCLUSIVE LOCKS" syntax in DB2
v8.2 and later that can be used to implement pessimistic locks for selects with multiple from
tables, subselects, inner/outer joins and so forth. I'll attach simple patch shortly.

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