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Poor Performance When A High Number of PX Servers Allocated but DOP is not High (Doc ID 2958307.1)

Last updated on JULY 20, 2024

Applies to:

Oracle Database - Enterprise Edition - Version 12.1.0.1 and later
Information in this document applies to any platform.

Symptoms

 Occasionally, a statement running in parallel will have poor performance.  The cause appears to be a high number of parallel servers allocated, although the DOP is reasonable (in this case a DOP of 8).

Changes

 None.

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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