How to fix the Oracle error PRCD-01126: Instance {0} cannot be removed because it is the only preferred instance for service(s) {1} for database {2}?

In this post, you’ll learn more about the Oracle ErrorPRCD-01126: Instance {0} cannot be removed because it is the only preferred instance for service(s) {1} for database {2} with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

PRCD-01126: Instance {0} cannot be removed because it is the only preferred instance for service(s) {1} for database {2}

Reason for the Error PRCD-01126: Instance {0} cannot be removed because it is the only preferred instance for service(s) {1} for database {2}

Cause: An attempt was made to remove the instance which is the only preferred instance for specified services.

How to fix the Error PRCD-01126: Instance {0} cannot be removed because it is the only preferred instance for service(s) {1} for database {2} ?

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

Action: Make sure that specified services have more than one preferred instance or modify services to not have the instance as a preferred instance.