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Online Statistics Gathering for Bulk Loads (Doc ID 2019634.1)

Last updated on OCTOBER 31, 2019

Applies to:

Oracle Database - Enterprise Edition - Version 12.1.0.1 and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Cloud Exadata 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

From 12c, for data load operations with CTAS or direct path inserts (for example insert with an append hint), statistics are automatically generated. This is called online statistics gathering.

Before 12c, once data loading was complete, time and resource consuming manual statistics gathering on the underlying table would be required so as to provide the Optimizer with the latest statistics to generate optimal plans.

Scope

Users loading bulk data.

Details

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In this Document
Purpose
Scope
Details
 Checking for online statistics gathering
 Disabling online statistics gathering

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