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How to View Why the Degree Of Parallelism (DOP) was Downgraded for an SQL in 12c and higher (Doc ID 2011375.1)

Last updated on SEPTEMBER 20, 2022

Applies to:

Oracle Database Cloud Service - Version N/A and later
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.

Goal

How to view the reason for the degree of parallelism (DOP) downgrade for a parallel query/sql.

Solution

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In this Document
Goal
Solution
 SQL Monitor HTML output / corresponding EM page
 Querying SQL Monitor information
 PX trace
References

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