My Oracle Support Banner

Query with No/Deleted Statistics performs better than query with Statistics (Doc ID 190878.1)

Last updated on MAY 15, 2024

Applies to:

Oracle Database - Enterprise Edition - Version 6.0.0.0 and later
Oracle Database - Personal Edition - Version 7.1.4.0 and later
Oracle Database - Standard Edition - Version 7.0.16.0 and later
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Information in this document applies to any platform.

Purpose

Clarify some of the confusion and misinvestigation of issues where queries run better without optimizer statistics because the optimizer chooses
a sub-optimal plan from the gathered stats.

Details

To view full details, sign in with your My Oracle Support account.

Don't have a My Oracle Support account? Click to get started!


My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.