Creating The Oracle Cursor For Update

create or replace procedure cursorforupdate as
  cursor crec is 
    select emp_code,emp_name from emp where emp_name='xyz' for update;
    vempcode emp.emp_code%type;
    vempname emp.emp_name%type;
begin
  open crec;
  loop
    fetch crec into vempcode, vempname;
    exit when crec%notfound;
    update emp set emp_number=vempcode where current of crec;
  end loop;
commit;
  close crec;
end; 

you cannot write commit inside the loop of for update cursor.