SQL> ed
Wrote file afiedt.buf

  1  begin
  2  for mag in 1..10 loop
  3  insert into temp values ('a'||mag);
  4  end loop;
  5* end;
  6  /

PL/SQL procedure successfully completed.

SQL> select * from temp;

NAME
------------------------------
a1
a2
a3
a4
a5
a6
a7
a8
a9
a10