ORA-00202: control file: string
Cause: This message reports the name file involved in other messages.
Action: See associated error messages for a description of the problem.

ORA-00201: control file version string incompatible with ORACLE version string
Cause: The control file was created by incompatible software.
Action: Either restart with a compatible software release or use CREATE CONTROLFILE to create a new control file that is compatible with this release.