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Pnnn And PZnn Parallel Processes In A RAC Database. (Doc ID 1548110.1)

Last updated on AUGUST 05, 2021

Applies to:

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
Oracle Database Cloud Exadata Service - Version N/A and later
Oracle Database - Enterprise Edition - Version 11.1.0.6 to 11.2.0.3 [Release 11.1 to 11.2]
Information in this document applies to any platform.

Purpose

To explain the differences between the two types of parallel processes seen in a RAC configuration.

Questions and Answers

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In this Document
Purpose
Questions and Answers
 What is a Pnnn process used for?
 What is a PZnn process used for?
 Do changes to parallel related init.ora parameter impact both type of parallel processes the same way?
 Identifying which type of parallel process is having issues and suggested debugging methods:
References

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