Oracle Solution for Error ora-00214

ORA-00214: control file 'string' version string inconsistent with file 'string' version string

What triggered the Error:

An inconsistent set of control files, datafiles/logfiles, and redo files was used.

What should we do to fix it:

Use a consistant set of control files, datafiles/logfiles, and redo log files. That is, all the files must be for the same database and from the same time period.