The tests were done on a Linux VMWare machine, running on a single CPU pc (a dell 600), configured with 1G or RAM, and a file-based disk. The DB used ASM, with around 700M for the DB (SGA+stuff). rgds
Do you plan to update this thread with you current findings? Also, what type and config of system did you get that measured 4% out of?
------------------------------ *From:* Ghassan Salem [mailto:salem.ghassan@xxxxxxxxx] *Sent:* Wednesday, August 30, 2006 12:49 AM *To:* kevinc@xxxxxxxxxxxxx *Cc:* oracle-l@xxxxxxxxxxxxx
*Subject:* Re: Loading data usng External Tables
I cannot give you any numbers, but I've surely seen much better performance when loading from fixed format files.
If I got some time today, I'll do some tests and get back to you.
On 8/29/06, Kevin Closson <kevinc@xxxxxxxxxxxxx> wrote: > > > >George, > >you can parallel either format (csv or fixed length), > >Fixed length is much faster as the system will not have to scan > the data to find out the ',' to delimit each field. > > ...have you measured how much faster, or are you basing this > on principle? I perform huge, high end loads from external tables > and have achieved as much as 250,000/sec per CPU with variable length. >