ORA-01672: control file may be missing files or have extra ones

admin

ORA-01672: control file may be missing files or have extra ones
Cause: Attempting to create a standby control file, but the control file was either
recently created via CREATE CONTROLFILE or an incomplete recovery has been
done. Thus the datafiles in the control file and the ones in the data dictionary may
not match.
Action: Open the database, then retry the operation.