| ERROR | recovery using the BACKUP CONTROLFILE option must be done |
| CAUSE | Either an earlier database recovery session specified BACKUP CONTROLFILE, or the control file was recreated with the RESETLOGS option, or the control file being used is a backup control file. After that only BACKUP CONTROLFILE recovery is allowed and it must be followed by a log reset at the next database open. |
| ACTION | Perform recovery using the BACKUP CONTROFILE option. |