Alert Log File Message "ERROR: Emon failed to start." And "wait for EMON to spawn"
(Doc ID 1361166.1)
Last updated on AUGUST 25, 2020
Applies to:Oracle Database - Enterprise Edition - Version 220.127.116.11 to 18.104.22.168 [Release 11.1 to 11.2]
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Cloud Exadata Service - Version N/A and later
Oracle Database Cloud Schema Service - Version N/A and later
Information in this document applies to any platform.
***Checked for relevance on 26-Feb-2013***
EMON process fails during database start-up. When reviewing alert log file, the following error is seen:
There may be sessions waiting on "wait for EMON to spawn" as well, you can use below query to double check.
Enabled Advanced Queueing Notification System or if already in use, increased the client registered volume.
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