How to fix the Oracle error PRCD-01127: Failed to verify if instance {0} is the only preferred instance for any service?

In this post, you’ll learn more about the Oracle ErrorPRCD-01127: Failed to verify if instance {0} is the only preferred instance for any service with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

PRCD-01127: Failed to verify if instance {0} is the only preferred instance for any service

Reason for the Error PRCD-01127: Failed to verify if instance {0} is the only preferred instance for any service

Cause: An attempt to verify if the instance is the only preferred instance for any service failed.

How to fix the Error PRCD-01127: Failed to verify if instance {0} is the only preferred instance for any service ?

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

Action: Make sure that the Oracle clusterware is up and running. Also, review the accompanying error messages for details about failure. Retry after resolving those issues.