Getting ora-00900 error when calling the procedure with the dynamic sql.

Question

create or replace procedure dyn_update(tab in varchar2,col in VARCHAR2) as
BEGIN
execute IMMEDIATE 'update'||tab||'set'||col||'= 0 where order_id=2458';
end;
and when i call this procedure in sql developer or sql* plus using
begin
dyn_update('Orders',Order_status');
end;
I am getting the oracle 0ra 00900 error.
can any one please help me

Answer 1

just a tip:
Create your dynamic string in a local variable, so you can easily see why it is giving an exception
create or replace procedure dyn_update(tab in varchar2,col in VARCHAR2) as
   str varchar2(32767);
BEGIN
   str := 'update '||tab||' set'||col||'= 0 where order_id=2458';
   dbms_output.put_line (str);
  execute IMMEDIATE str;
end;