Oracle Convert int на сегодняшний день
select to_date(20150302,'yyyymmdd') from dual;
or
select to_char(to_date(20150302,'yyyymmdd'),'mm/dd/yyyy') from dual;
miletoo
select to_date(20150302,'yyyymmdd') from dual;
or
select to_char(to_date(20150302,'yyyymmdd'),'mm/dd/yyyy') from dual;