Oracle Error ORA-12479: file label string must equal DBHIGH string

Oracle Error Message

ORA-12479: file label string must equal DBHIGH string

Reason for the Error

A database file had an OS label that did not match DBHIGH. Either DBHIGH was altered or the OS file was relabeled.

Solution

Relabel the file so that its label matches DBHIGH, or alter DBHIGH so that it matches the label on the file.