odbc 3 times faster than native client ?

Discussion of open issues, suggestions and bugs regarding SDAC (SQL Server Data Access Components) for Delphi, C++Builder, Lazarus (and FPC)
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odbc 3 times faster than native client ?

Post by helinz » Tue 02 May 2017 11:30

i use Delphi XE and SDAC 6.10 (but i tried it also with 8.0): queries with provider = prSQL performs around 3 times faster than with provider = prNativeClient. And this with different nativeClient-versions and different ODBC-versions...
But 'Encrypt' and 'NonBlocking'(TMSSQL) needs nativeClient.
Has somebody the same experience or am i doing something wrong?


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Re: odbc 3 times faster than native client ?

Post by azyk » Fri 05 May 2017 13:14

Please compose a small project which demonstrates the specified performance difference and send it for investigation. To send the project use the contact form at our site: http://www.devart.com/company/contactform.html .

Also specify the exact version of OLEDB provider and SQL Native Client provider. You can see it the Info sheet of TMSConnection Editor

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