How to fix the Oracle error CRS-02409: The clock on host string is not synchronous with the mean cluster time. No action has been taken as the Cluster Time Synchronization Service is running in observer mode.?

In this post, you’ll learn more about the Oracle ErrorCRS-02409: The clock on host string is not synchronous with the mean cluster time. No action has been taken as the Cluster Time Synchronization Service is running in observer mode. with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

CRS-02409: The clock on host string is not synchronous with the mean cluster time. No action has been taken as the Cluster Time Synchronization Service is running in observer mode.

Reason for the Error CRS-02409: The clock on host string is not synchronous with the mean cluster time. No action has been taken as the Cluster Time Synchronization Service is running in observer mode.

Cause: The clock was not in sync with the mean cluster time. No action has been taken as Cluster Time Synchronization Service is running in observer mode.

How to fix the Error CRS-02409: The clock on host string is not synchronous with the mean cluster time. No action has been taken as the Cluster Time Synchronization Service is running in observer mode. ?

You can fix this error in Oracle by following the below steps

Action: Verify correct operation of the vendor time synchronization service on the node.