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Message Posted: Mon, 26 Nov 2012 @ 22:09:08 GMT


     
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Subj:   Re: Access Logging - Impact on performance
 
From:   Walter, Todd

Access logging will have an impact on the loading time if you are loading one record at a time through ODBC. But it will be a small part of the problem, turning it off will give you percentage improvements not X times improvements. The real problem is taking away all the parallelism of Teradata by giving the database only one record to process at a time and then having to sit idle while the response goes back to the application and the application gets around to sending another record to process.

If ODBC is a must - rather than TPT - then the biggest improvement you can get is by utilizing the bulk/batch operators to send down an array of records in each communication with the database.



     
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