Inserting 10 million rows in to a table hangs

Question

HI through toad iam using a simple for loop to insert 10 million rows into a table by saying
for i in 1 ......10000000
insert.................
It hangs ........ for lot of time
is there a better way to insert the rows in to the table....?
i have to test for performance.... and i have to insert 50 million rows in its child table..
practically when the code moves to production it will have these many rows...(may be more also) thats why i have to test for these many rows
plz suggest a better way for this
Regards
raj

Answer 1

Must be a 'hardware thing'.
My ancient desktop (pentium IV, 1.8 Ghz, 512 MB), running XE, needs:
MHO%xe> desc t
Naam                                      Null?    Type
N                                                  NUMBER
A                                                  VARCHAR2(10)
B                                                  VARCHAR2(10)
MHO%xe> insert /*+ APPEND */ into t
  2  with my_data as (
  3  select level n, 'abc' a, 'def' b from dual
  4  connect by level <= 10000000
  5  )
  6  select * from my_data;
10000000 rijen zijn aangemaakt.
Verstreken: 00:04:09.71
MHO%xe> drop table t;
Tabel is verwijderd.
Verstreken: 00:00:31.50
MHO%xe> create table t (n number, a varchar2(10), b varchar2(10));
Tabel is aangemaakt.
Verstreken: 00:00:01.04
MHO%xe> insert into t
  2  with my_data as (
  3  select level n, 'abc' a, 'def' b from dual
  4  connect by level <= 10000000
  5  )
  6  select * from my_data;
10000000 rijen zijn aangemaakt.
Verstreken: 00:02:44.12
MHO%xe>  drop table t;
Tabel is verwijderd.
Verstreken: 00:00:09.46
MHO%xe> create table t (n number, a varchar2(10), b varchar2(10));
Tabel is aangemaakt.
Verstreken: 00:00:00.15
MHO%xe> insert /*+ APPEND */ into t
  2   with my_data as (
  3   select level n, 'abc' a, 'def' b from dual
  4   connect by level <= 10000000
  5   )
  6   select * from my_data;
10000000 rijen zijn aangemaakt.
Verstreken: 00:01:03.89
MHO%xe>  drop table t;
Tabel is verwijderd.
Verstreken: 00:00:27.17
MHO%xe> create table t (n number, a varchar2(10), b varchar2(10));
Tabel is aangemaakt.
Verstreken: 00:00:01.15
MHO%xe> insert into t
  2  with my_data as (
  3  select level n, 'abc' a, 'def' b from dual
  4  connect by level <= 10000000
  5  )
  6  select * from my_data;
10000000 rijen zijn aangemaakt.
Verstreken: 00:01:56.10Yea, 'cached' it a bit (ofcourse ;) )
But the append hint seems to knibble about 50 sec off anyway (using NO indexes at all) on my 'configuration'.