RE: Which is faster??

When inserting only rowid gows into rollback segment, so 1GB will be more then enough.

Alex Hillman

        -----Original Message-----
        From:   CC Harvest [SMTP:ccharvest_at_yahoo.com]
        Sent:   Friday, March 23, 2001 12:18 PM
        To:     Multiple recipients of list ORACLE-L
        Subject:        Re: Which is faster??

        Thank you all for the reply. Probbaly I need to do
        more test. My concern is that whether it's ok to do
        the buld insert of 9 million records(say 2.7GB) on a 1
        GB RBS? I think the RBS should also be at least 3GB,
        right?

        Thanks,

        Chris

        --- Connor McDonald <hamcdc_at_yahoo.co.uk> wrote:


        > If you're on 8.0 or higher, try

        > 

        > insert /*+ APPEND */ 

        > into table

        > select * from other_table;

        > 

        > where "table" is defined as nologging.  Then you

        > won't

        > hit either redo logs or rollback segments..Its the

        > equivalent of a sqlldr direct load

        > 

        > hth

        > connor

        > 

        > --- CC Harvest <ccharvest_at_yahoo.com> wrote: > I have

        > the following scripts:

        > > 

        > > insert into table

        > > select * from table2

        > > ;

        > > 

        > > So if use the about bulk statement in my 

        > > application, and the table2 is big, say 10

        > > million records, my concern is that it's 

        > > going to fail because of the possible rollback

        > > segments failure. So then I have to use PL/SQL

        > > to create a cursor and commit every 50000 records.

        > > What's the disadvantage of this?Will it be much

        > > slower

        > > than a bulk insert?

        > > 

        > > Can I do it another way: create a stored procedure

        > > for this bulk insert, then pin this procedure in

        > > memory, does it still have RBS problem?

        > > 

        > > Anyone has similar experience?

        > > 

        > > Thanks in Advance,

        > > 

        > > Chris

        > > 

        > > 

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Author: Hillman, Alex
  INET: Alex.Hillman_at_usmint.treas.gov

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