ORA-19655: cannot switch to incarnation with different resetlogs data
Cause: This switchToCopy operation is attempting to switch to a datafile which comes from a different resetlogs version of the database
Action: Either restore a backup control file that was taken from the same database version as the target datafile-copy, or switch to a different datafile-copy
https://support.oracle.com/
http://www.oracle.com/