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Re: Server memory exhausted on ODBC 8.3.0400

From: Hiroshi Inoue <inoue(at)tpf(dot)co(dot)jp>
To: alepaes - aldeia digital <alepaes(at)aldeiadigital(dot)com(dot)br>
Cc: pgsql-odbc(at)postgresql(dot)org
Subject: Re: Server memory exhausted on ODBC 8.3.0400
Date: 2009-02-11 00:41:25
Message-ID: (view raw or whole thread)
Lists: pgsql-odbc
alepaes - aldeia digital wrote:
> Hi Hiroshi,
> Hiroshi Inoue wrote:
>> alepaes - aldeia digital wrote:
>>> Hi,
>>> Last weekend, I update 2 customers servers with the latest Postgresql 
>>> 8.3.5 vrsion. The databases in each customer have +/- 50GB  of data.
>>> I changed some ODBCs versions in clients machines from 7.3.0208 to 
>>> 8.3.0400.
>>> In this machines, when I run some reports (thats run million of small 
>>> queries), the Postgresql server crashes because this processes use 
>>> all physical and swap memory in the server.
>>> If I disable both 'Use declare/fetch' and 'Updatable Cursor', the 
>>> error does not occurs. I don't need the 'Updatable Cursors', but the 
>>> 'Use Declare Fetch' is crucial to me.
>>> In ODBC 7.3.0208, with this option enabled, the error doesn't occurs.
>> Does your code close the statements used in the applications?
> Basically, the program starts with a BEGIN and make a lot of simple 
> SELECT queries and some insert and update queries. After this we have a 
> COMMIT. Very simple.

What kind of tool are you using?
Do you close cursors before "COMMIT" using SQLCloseCursor() or
the coressponding command in your tool?

Hiroshi Inoue

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