| ERROR | the file name for datafile string is missing in the control file |
| CAUSE | Media recovery of a backup control file added this datafile to the control file, but it does not set the file name because that is unsafe. |
| ACTION | If the datafile is on disk, then issue ALTER DATABASE RENAME to correct the control file. Otherwise, RESTORE the datafile, and then use SWITCH to make it known to the control file. If the tablespace containing this datafile will be dropped, then reissue the RECOVER command with a SKIP clause to skip recovery of this tablespace. |