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https://issues.apache.org/jira/browse/OPENJPA-1907?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12972194#action_12972194
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Jeremy Bauer commented on OPENJPA-1907:
---------------------------------------

Committed a simple fix to 2.1.x and trunk which maps a java.util.Date parameter 
value to a java.sql.Date parameter value when using DB2 on z/OS.  The default 
behavior was to map java.util.Date to a java.sql.Timestamp and that results in 
a SQLException on this platform.

> Exact type of date-valued parameter not preserved during prepared query 
> reparameterization
> ------------------------------------------------------------------------------------------
>
>                 Key: OPENJPA-1907
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-1907
>             Project: OpenJPA
>          Issue Type: Bug
>            Reporter: Pinaki Poddar
>            Assignee: Jeremy Bauer
>
> Date valued query parameter such as java.util.Date gets bound as timestamp 
> during prepared query reparametrization. Though the parameter value carries 
> the exact type, the prepared query executor when binds the value via 
> DBDictionary setDate(...) -- the logic defaults the value to be bound to the 
> JDBC statement as Timestamp. DB2 database does not like the type change and 
> returns wrong result --   MySQL/Derby etc tolarates the type change and gets 
> correct result.

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