Oracle® Database 11g / 12c / 18c error codes ORA-01111: name for data file [string] is unknown - rename to correct file

ORA-01111: name for data file [string] is unknown - rename to correct file

Oracle Error Code: ORA-01111

Cause: The data file was missing from a CREATE CONTROLFILE command or backup control file recovery was done with a control file that was saved before the file was created.

Action: Rename the MISSING file to the name of the real file.