O/S-Error: (OS 121) The semaphore timeout period has expired.
(Doc ID 2280813.1)
Last updated on JANUARY 15, 2020
Applies to:Oracle Database - Standard Edition - Version 126.96.36.199 to 188.8.131.52 [Release 12.1 to 12.2]
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Backup Service - Version N/A and later
Oracle Database Cloud Service - Version N/A and later
Below error is spotted in alert log and database failed
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