SQL & PL/SQL

Hi all,

I've invoked the following pl/sql script

SQL> declare val number:=10;
  2  begin
  3  loop
  4  val:=11;
  5  exit when val=10;
  6  end loop;
  7  end;
  8  /

Now i want to see that it is running, how i can do that? there are some dictionary view or else. Please help meeee!!!
and also how i can kill it?

Thanks
Francesco