How to Diagnose High CPU Utilization of ORACLE.EXE in Windows Environment
(Doc ID 273646.1)
Last updated on JANUARY 28, 2021
Applies to:Oracle Database Backup Service - Version N/A and later
Oracle Database - Enterprise Edition - Version 220.127.116.11 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
Information in this document applies to any platform.
This article provides specific details of how to get more information about the usage of CPU by the Oracle process on windows.
On windows Oracle processes are represented as "Threads" of the Oracle process so if one session is using a lot of CPU this is simply displayed as "Oracle using CPU". To identify the root cause you may need to drill down to the thread level using the information provided.
For general information on CPU usage diagnosis see:
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In this Document
|Sysinternals Process Explorer|
|Collecting More Information|
|Legacy Solution: Qslice|