Instance hang with very high wait on 'cursor: mutex S'
(Doc ID 1274320.1)
Last updated on FEBRUARY 13, 2019
Applies to:Oracle Database - Enterprise Edition - Version 188.8.131.52 and later
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Information in this document applies to any platform.
2 node RAC, intermittently instance is slow then go into 'hang' status without accepting any new connections. There is very high wait of 'cursor: mutex S'.
AWR report during slow/hanging period shows:
To view full details, sign in with your My Oracle Support account.
Don't have a My Oracle Support account? Click to get started!
In this Document