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Synchronised To Unspecified At Stratum 4 (Doc ID 2468965.1)

Last updated on JANUARY 30, 2020

Applies to:

Exadata X6-2 Hardware - Version All Versions to All Versions [Release All Releases]
Information in this document applies to any platform.

Symptoms

The cell nodes report error "synchronised to unspecified at stratum 4" with exachk.

The NTP information is correct on all nodes. The NTP configuration for the cell and admin nodes are exactly the same.

Cells are able to ping the configured NTP servers just fine.

Exacheck reports :

FAILURE: the NTP services are not properly synchronized:

The preferred server data is:
####DM02: 150.nnn.nnn.57
#####dm01: 150.nnn.nnn.57
#####dm02: 150.nnn.nnn.57
#####dm03: 150.nnn.nnn.57
####DM01: 150.nnn.nnn.57

The synchronized server data is:
####DM02: 150.nnn.nnn.57
#####dm01: synchronised to unspecified at stratum 4
#####dm02: synchronised to unspecified at stratum 4
#####dm03: synchronised to unspecified at stratum 4
####DM01: 150.nnn.nnn.57

+ The firewall configuration on the cells is fine with specific rules in place for each of the NTP IPs.

Cause

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