invalid cursor... please correct my query

Question

my ref cursor variable is  v_cour and type is sys_refcursor  but when i run the above prgm it comes error as invalid cursor... please correct above query?? 



  1   declare
  2   v_cour sys_refcursor;
  3   v_stat varchar2(20);
  4   begin
  5   country_info(22,'pa','');
  6   loop
  7   fetch v_cour into v_stat;
  8   exit when v_cour%notfound;
  9   dbms_output.put_line(v_stat);
 10   end loop;
 11*  end;
SQL> 
SQL> /
 declare
*
ERROR at line 1:
ORA-01001: invalid cursor
ORA-06512: at line 7