Wtedy być może musisz zrobić coś takiego:
declare
type t_temp_storage is table of student%rowtype;
my_temp_storage t_temp_storage;
begin
select * bulk collect into my_temp_storage from student;
for i in 1..my_temp_storage.count
loop
dbms_output.put_line('here I am '||my_temp_storage(i).stuid);
end loop;
end;