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Histogram Statistics Are Regathered Unnecessarily For Unchanged Partitions Using Incremental Statistics In 12.2.0.1 (Doc ID 2532635.1)

Last updated on MAY 07, 2020

Applies to:

Oracle Database - Enterprise Edition - Version 12.2.0.1 to 12.2.0.1 [Release 12.2]
Information in this document applies to any platform.

Symptoms

In the above example, the changes happened to only SYS_P123 partition which is only stale but the statistics are collected for other partitions as well that do not have any changes reported. Since histograms need to be updated, it scans the partitions that are not stale and histograms are regathered and updated unnecessarily for unchanged partitions.

Changes

 Upgrade to 12.2.0.1

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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