Large Waits With The Wait Event "Resmgr:Cpu Quantum"

(Doc ID 806893.1)

Last updated on DECEMBER 06, 2016

Applies to:

Oracle Database - Enterprise Edition - Version 10.2.0.3 to 11.2.0.3 [Release 10.2 to 11.2]
Information in this document applies to any platform.
NOTE:
A complete list of patches required to address this problem is maintained by the resource manager product team in
Note 1339803.1 - Recommended Patches for CPU Resource Manager

Symptoms

High waits on wait event 'resmgr:cpu quantum', while there is no CPU load on the host.

Top 5 Timed Events
~~~~~~~~~~~~~~~~~
Event                   Waits   Time(s) Avg Wait(ms) % Total CallTime WaitClass
resmgr:cpu quantum      247074   4036            16              58.3 Scheduler
CPU time                3201       46.3
log file sync           225905    808             4              11.7 Commit
db file sequential read 95930     650             7               9.4 User I/O
log file parallel write 235251    569             2               8.2 System I/O

Cause

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