create table t_test(id int,name varchar(50));
26s 510ms
BEGIN
for i in 1…50000 LOOP
insert into t_test (id,name) values(i,dbms_random.string(‘A’,20));
commit;
end loop;
end;

create table t_test1(id int,name varchar(50));
457ms
BEGIN
for i in 1…50000 LOOP
insert into t_test1 (id,name) values(i,dbms_random.string(‘A’,20));
end loop;
commit;
end;