PL/SQL check date is valid

Question

If I have a date format DDMM in PL/SQL and I want to validate it. What is the correct way to do it?

DD is the day and MM is th

Answer 1

to_date raises an exception if its input parameter is not a valid date. So you can do something like:

declare
  x date;
begin
  x := to_date('3210', 'DDMM'); -- Will raise ORA-1847
  x := to_date('0113', 'DDMM'); -- Will raise ORA-1843
exception
  when others then 
    if sqlcode in (-1843, -1847) then
      dbms_output.put_line('Invalid Date!');
      null;
    else
      raise;
    end if;
end;