TO_DATE('04-JUL-15', 'DD-MON-RR'): Uses the RR format when interpreting the years 15 and 75
SQL>
SQL> --Uses the RR format when interpreting the years 15 and 75
SQL>
SQL> SELECT
2 TO_CHAR(TO_DATE('04-JUL-15', 'DD-MON-RR'), 'DD-MON-YYYY'),
3 TO_CHAR(TO_DATE('04-JUL-75', 'DD-MON-RR'), 'DD-MON-YYYY')
4 FROM dual;