Undo tablespace/datafiles

Question

Oracle 9i
In production, we have undo data files:
SUM(MAXBYTES)     SUM(USER_BYTES)
33554432000     12823953408
this table has 90 million records
I estimated table size:
num_rows*avg_row_len=12875211284
We need to insert 55 million records to new table. When insert, I just want to run insert into ...select from statement once, only commit one time.
do you think undo tablespace is big enough to hold 55 million records based on the above undo datafiles?
Thanks
S.

Answer 1

Also append doens't work with select it only works with INSERT, and you already created table in nologging mode. if you are on 10 and your extent management is set to auto, then use this.
create table st.order_temp
tablespace USER_DATA
nologging
nocache
noparallel
as select
all columns
from st.order_temp
where trunc(insert_date)>=add_months(trunc(sysdate, 'MONTH'), -12);
Edited by: OrionNet on Dec 9, 2008 2:19 AM