High CPU utilization and slow IO due to space map thrashing.

(Doc ID 2203025.1)

Last updated on NOVEMBER 15, 2016

Applies to:

Solaris Operating System - Version 11.1 and later
Information in this document applies to any platform.


A system running Oracle Database will show high CPU utilization and database transactions  are running slow.

The output of vmstat shows occasional high count of threads in the run queue:




Sign In with your My Oracle Support account

Don't have a My Oracle Support account? Click to get started

My Oracle Support provides customers with access to over a
Million Knowledge Articles and hundreds of Community platforms