EM 12c: How to Disable Diskmon and ONS Monitor from Enterprise Manager 12c Cloud Control to Stop Notifications: Message=ora.diskmon has 1 instances in OFFLINE State

(Doc ID 2060296.1)

Last updated on FEBRUARY 27, 2017

Applies to:

Enterprise Manager for Oracle Database - Version and later
Information in this document applies to any platform.


EM Cloud Control monitors a RAC database host, on which critical alerts for DiskMon Offline are being generated for the High Availability Service.

Alert content similar to this is in the accompanying notification:

Target type=Oracle High Availability Service
Target name=has_urhost.com
Message=ora.diskmon has 1 instances in OFFLINE State
Key Value=resource_ora.diskmon.type_ora.diskmon

These errors are harmless for and later database targets. 
The associated metric can be disabled to stop generation of alerts and notifications with the following procedure:


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