How to fix the Oracle error NID-00143: Mismatched controlfile string?

In this post, you’ll learn more about the Oracle ErrorNID-00143: Mismatched controlfile string with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

NID-00143: Mismatched controlfile string

Reason for the Error NID-00143: Mismatched controlfile string

A controlfile did not have the correct status.

How to fix the Error NID-00143: Mismatched controlfile string ?

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

Shutdown the database, remove the mismatched controlfile, mount the database, and retry the operation.