ORA-01122: database file 1 failed verification check
The SCN in the data file is greater than the SCN in the control file or wrong control file is being used. Please use correct control file. 

If the the control fle is correct then do BACKUP CONTROLFILE RECOVERY.

Steps:

SQL&gt;startup mount

SQL&gt; recover database using backup controlfile until cancel;


it will ask you for archive logs, give the path of all archive logs which it needs until it gives you message, 

MEDIA RECOVERY COMPLETED.


Open the database.

SQL&gt; alter database open;