ODBC Application Running Slower Against 11gR1 Or Later Database Than Previous Releases

(Doc ID 1231324.1)

Last updated on JULY 05, 2017

Applies to:

Oracle ODBC Driver - Version 8.1.7.0.0 and later
Microsoft Windows (32-bit)
Microsoft Windows x64 (64-bit)

Symptoms

An ODBC application experiences slow performance or a performance decrease as the queries issued from the application are taking much longer to execute against an 11gR1 or later database compared to a 10gR2 or earlier database.  The ODBC application and Oracle Client Software have not changed.

Changes

The database was recently upgraded to 11gR1.

Cause

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