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How to avoid soft parses with ADO

From: Tzanko <tzanko.tzanev_at_strategicthought.com>
Date: 5 Jun 2006 09:53:19 -0700
Message-ID: <1149526399.656485.219570@i39g2000cwa.googlegroups.com>


Hi,
We have an application using Oracle DB through ADO - Oracle OLEDB Provider for Oracle. I am monitoring the performance of the applciation with heavy load, and I can see that our hard parse ratio is good (2% of queries are being hard-passed) (and we are using bind variables in queries that are execured most often), but too many SQL queries are soft-parsed - say 80, 90%. We are using ADO and we create the ADO connection object and recordset object as required and then release as soon as we've finished with them, following ADO recomendations. We believe the connection is pooled and therefore it is better to release as soon as possible rather than hold it for a duration of a transaction or between transactions.
In this scenario, can anyone suggest what can be done to reduce the number of soft parses. Oracle recomend that 30% of soft-parses as a treshold. The rest 70% of the queries should not require parsing at all.

Thanks

Tzanko Received on Mon Jun 05 2006 - 11:53:19 CDT

Original text of this message

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