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How to Diagnose High CPU Usage Problems to the Module Level (Doc ID 352648.1)

Last updated on AUGUST 30, 2023

Applies to:

Oracle Database - Enterprise Edition - Version 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.


When a process consumes much of the cpu and there is no specific waits or i/o as the culprit, then this document helps to diagnose the issue.


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In this Document
 Errorstack Methods
 Generic Stack Methods
 Manual Method
 "Automated" method
 Platform Specific Stack Methods
 DBX/Collector (Various UNIX flavors)
 qprof (Linux)
 Truss (o/s modules only)

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