declare
i number;
begin
for i in 1..100000 loop
insert into t2 values(i,mod(i,7),mod(i,8));
if(mod(i,1000) = 0 )
then commit;
end if;
end loop;
for i in 1..50000 loop
insert into t2 values(i,mod(i,7),mod(i,8)+5);
if(mod(i,1000) = 0 )
then commit;
end if;
end loop;
end;
/