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Automatic Degree of Parallelism in (Doc ID 1269321.1)

Last updated on NOVEMBER 07, 2023

Applies to:

Oracle Database - Enterprise Edition - Version to [Release 11.2]
Oracle Database Cloud Schema Service - Version N/A and later
Gen 1 Exadata Cloud at Customer (Oracle Exadata Database Cloud Machine) - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Backup Service - Version N/A and later
Information in this document applies to any platform.


In Automatic Degree of Parallelism can only be used if  I/O statistics are gathered.

This Note explains what DBA has to do in order to make sure Automatic Degree of Parallelism works.


For DBAs 

The AutoDOP is not a feature to use more parallelism. It is a feature that restricts the parallel to maximize throughput,
so it is expected that with AutoDOP not all queries will run in parallel and the ones that do run in parallel may not run with full parallelism, as this is the technical specifications of the feature.

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In this Document
 Ask Questions, Get Help, And Share Your Experiences With This Article
 IO Calibration
 Tuning Parameters

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