RE: Which is faster??

From: Martin Kendall <Martin.Kendall_at_Rubus.com>
Date: Mon, 26 Mar 2001 07:28:51 -0800
Message-ID: <F001.002D7CC3.20010326073126@fatcity.com>

I know that Direct Path of sqlldr does not allow Indexes so what is the comparative performance of this suggestion if the given Table is indexed ?

Martin

-----Original Message-----
Sent: 23 March 2001 09:05
To: Multiple recipients of list ORACLE-L

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: Martin Kendall
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Received on Mon Mar 26 2001 - 09:28:51 CST