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Oracle Linux: System Clock Drifts; Error "ntpd[XXX]: frequency error - XXX PPM exceeds tolerance 500 PPM" (Doc ID 2188980.1)

Last updated on SEPTEMBER 22, 2021

Applies to:

Linux OS - Version Oracle Linux 4.4 and later
Oracle Cloud Infrastructure - Version N/A and later
Information in this document applies to any platform.


The system clock is supposed to be constantly synchronized with three or more reference clocks but the server clock still drifts or is not otherwise corrected.  Examining the system log in the /var/log/messages file shows:


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