dbexpoda.dll v4.91 seems many times slower than v1.91

Discussion of open issues, suggestions and bugs regarding usage of dbExpress drivers for Oracle in Delphi and C++Builder
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Joined: Wed 14 Sep 2011 09:28

dbexpoda.dll v4.91 seems many times slower than v1.91

Post by antmed » Wed 14 Sep 2011 10:05


We are using dbExpress v1.91 with Delphi 7 and we
want to upgrade.
After downloading new trial dbExpress version 4.90
(dbexpoda.dll ver I noticed, that
queries slows down (now about 3x slower when
using new dbexpoda.dll).

What can i do to improve performance?
It's important.

Thank you!

Devart Team
Posts: 5530
Joined: Tue 10 Aug 2010 11:35

Post by AlexP » Wed 14 Sep 2011 13:20


Please send us scripts for creating and filling tables and the text of your query to alexp*devart*com.We will check the performance of our dbExpress driver.

P.S. Besides, we are going to release the new version of dbExpress driver for Oracle this week where index selection is fixed. This fix improves the performance greately.

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