Why does undo table space got full even when i commit between inserts??

Question

Dears,
I have stored procedure which inserts around 5million record(insert select not applicable); and it always fails because of "ORA-30036: unable to extend segment by 8 in undo tablespace" although the procedure commits after every 10,000 records and the undo table space is 2GB. so my question is why does undo table space got full even if i commit?? & do i have other solution than making the undo auto extend??
am working on Orcale 9i RAC
Swaid A. McKey

Answer 1

Actually, i had the same problem that my UNDO tablespace starting eating too much space, my undo_retention is set as 3hours, but how can estimate it using the view.
Here the following sample output
SID     STATISTIC#     VALUE
3     151     0
3     152     0
3     153     0
Can anyone assist with it ? But i still have the strange feeling why would UNDO get full once commit is being used. Even i did try with AUTOEXTEND and it throw me the errors that can't extend UNDO tablespace.
Any ideas.....
Thanks !!
MB