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MQSeries.net Forum Index » WebSphere Message Broker (ACE) Support » IIB 9 Linux Oracle ODBC ORA-00904 question

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marko.pitkanen
PostPosted: Mon Jan 12, 2015 6:08 am    Post subject: IIB 9 Linux Oracle ODBC ORA-00904 question Reply with quote

Chevalier

Joined: 23 Jul 2008
Posts: 440
Location: Jamsa, Finland
Hi,

I would like to understand following phenomenon and what can be done / configured to avoid it.
    - IIB 9
    - Linux
    - ODBC
    - Oracle
    - OptimizePrepare=1 in odbc.ini
    - Query on ESQL: (SELECT C FROM Database.xxx AS C WHERE C.yyy = ddd);
    - Column RR removed from table xxx
    - Excetution of the ESQL clause fails after database change with exception: SQL State ''57'' SQL Native Error Code '904' SQL Error Text ''[unixODBC][IBM][ODBC 20101 driver][Oracle]ORA-00904: "C"."RR": invalid identifier''
    - After mqsireload ESQL excetues again


Hypothesis:
Oracle driver creates prepared statement / procedure which is renewed only when clause is executed first time after deploy / reload.

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Marko
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mqjeff
PostPosted: Mon Jan 12, 2015 6:18 am    Post subject: Reply with quote

Grand Master

Joined: 25 Jun 2008
Posts: 17447
Have you considered optimizing the query to only include the columns you need to get, rather than all available columns?

It will actually perform better that way, too.
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marko.pitkanen
PostPosted: Mon Jan 12, 2015 6:32 am    Post subject: Reply with quote

Chevalier

Joined: 23 Jul 2008
Posts: 440
Location: Jamsa, Finland
Thanks mqjef for remainding of perhaps the easiest solution.

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Marko
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