Parallel Query Forces Slow Index Full Scan Instead Of INDEX_FFS (Doc ID 1643721.1)

Last updated on FEBRUARY 02, 2017

Applies to:

Oracle Database - Enterprise Edition - Version 11.2.0.4 to 12.1.0.1 [Release 11.2 to 12.1]
Information in this document applies to any platform.

Symptoms

After upgraded to 11.2.0.4, then the parallel query could force slow using a Index Full Scan instead of INDEX_FFS, for example:

-) On 11.2.0.3

 

Cause

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