Unable to Open database after database clone or Recover from backup

SQL> ALTER DATABASE OPEN RESETLOGS;

ALTER DATABASE OPEN RESETLOGS

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ERROR at line 1:

ORA-01194: file 1 needs more recovery to be consistent

ORA-01110: data file 1: '/ora_sys/TFSU/system01_TFS.dbf'

SQL> RECOVER DATABASE UNTIL CANCEL;

ORA-00283: recovery session canceled due to errors

ORA-16433: The database must be opened in read/write mode.

SQL> ALTER DATABASE OPEN NORESETLOGS;

ALTER DATABASE OPEN RESETLOGS

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ERROR at line 1:

ORA-01139: RESETLOGS option only valid after an incomplete database recovery

SQL> alter database open;

alter database open

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ERROR at line 1:

ORA-01113: file 1 needs media recovery

ORA-01110: data file 1: '/ora_sys/TFSU/system01_TFS.dbf'

SQL>alter system set _ALLOW_RESETLOGS_CORRUPTION=true

***Hidden parameter _ALLOW_RESETLOGS_CORRUPTION=TRUE  which will allow us to 

open database even though it’s not properly recovered   ***

SQL> ALTER DATABASE OPEN  RESETLOGS;

Database altered.