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https://issues.apache.org/jira/browse/OPENJPA-1842?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12922576#action_12922576
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Albert Lee commented on OPENJPA-1842:
-------------------------------------

Changing from IDENTITY to AUTO also causes some test failures running against 
MSSQL:

Caused by: org.apache.openjpa.lib.jdbc.ReportingSQLException: Cannot insert 
explicit value for identity column in table 'CachedEntityStatistics' when 
IDENTITY_INSERT is set to OFF. {prepstmnt 20188152 INSERT INTO 
CachedEntityStatistics (id, firstName, lastName, version) VALUES (?, ?, ?, ?) 
[params=?, ?, ?, ?]} [code=544, state=S0001]

and Sybase:

Caused by: org.apache.openjpa.lib.jdbc.ReportingSQLException: Explicit value 
specified for identity field in table 'CachedEntityStatistics' when 'SET 
IDENTITY_INSERT' is OFF.
{prepstmnt 724577072 INSERT INTO CachedEntityStatistics (id, firstName, 
lastName, version) VALUES (?, ?, ?, ?) [params=?, ?, ?, ?]} [code=584, 
state=ZZZZZ]

BTW, we are not proposing changing all IDENTITY to something else. If so that 
leave us a hole in testing this functionality.

Need to take a close look at what can be done here.


> CachedEntityStatistics depends on @GeneratedValue which is not supported in 
> Oracle by default
> ---------------------------------------------------------------------------------------------
>
>                 Key: OPENJPA-1842
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-1842
>             Project: OpenJPA
>          Issue Type: Test
>    Affects Versions: 2.0.0, 2.0.1
>            Reporter: Albert Lee
>            Assignee: Albert Lee
>            Priority: Minor
>             Fix For: 2.0.2, 2.1.0
>
>
> CachedEntityStatistics depends on @GeneratedValue which is not supported in 
> Oracle by default unless special trigger and OracleDictionary setting is 
> implemented.
> Otherwise, the following similar exception will be observed.
> Caused by: org.apache.openjpa.lib.jdbc.ReportingSQLException: ORA-01400: 
> cannot insert NULL into ("JPAUSER"."CACHEDENTITYSTATISTICS"."ID")
>  {prepstmnt 406657085 INSERT INTO CachedEntityStatistics (firstName, 
> lastName, version) VALUES (?, ?, ?) [params=?, ?, ?]} [code=1400, state=23000]
> SInce TestStatistics, the test case uses CachedEntityStatistics, is not 
> testing GeneratedValue per se, will remove the annotation and implement a 
> simple id assignment in CachedEntityStatistics  class.

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