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From "Romain Manni-Bucau (Jira)" <j...@apache.org>
Subject [jira] [Commented] (OPENJPA-2845) JPA intermittently giving null resultset even DB has value
Date Thu, 17 Dec 2020 10:34:00 GMT

    [ https://issues.apache.org/jira/browse/OPENJPA-2845?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17250977#comment-17250977
] 

Romain Manni-Bucau commented on OPENJPA-2845:
---------------------------------------------

Without a reproducer it will be hard or even almost impossible but some caching - either actual
cache or reuse of some JPA component instances - can make the resultset partially bypassed
in some particular configurations. Without more information it is the main cause I can think
about.

> JPA intermittently giving null resultset even DB has value
> ----------------------------------------------------------
>
>                 Key: OPENJPA-2845
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-2845
>             Project: OpenJPA
>          Issue Type: Bug
>            Reporter: Deepesh
>            Priority: Critical
>
> Data is getting fetched from Oracle DB but while mapping it back to JPA object, it gets
null. This can be seen through Dynatrace that SQL returns row result but JPA resultset is
getting null.
> Query is quite simple and just fetching the record based on primary key. Although another
field is being passed in where clause with primary key but it returns single row.
> Also, same jpa query provides results (same input) several times before.
> We enabled jpa logs and see query runs fine on DB. 
> Is there any thresold due to which JPA not working as expected? Any suggestions to handle
this ?



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