1.创建方法
create or replace function md5utils(sargs in varchar2) return varchar2 is
resv varchar2(32)
begin resv := utl_raw.cast_to_raw(dbms_obfuscation_toolkit.MD5(input_string =》 sargs));
return lower(resv);
end;
2. 测试
select md5utils('123') from dual;