| ERROR | backup database requires recovery |
| CAUSE | The control file is for a backup database which requires recovery, and cannot be opened for read-only access by this instance. |
| ACTION | Perform the necessary recovery and re-open for read-only access. |
| ERROR | backup database requires recovery |
| CAUSE | The control file is for a backup database which requires recovery, and cannot be opened for read-only access by this instance. |
| ACTION | Perform the necessary recovery and re-open for read-only access. |