Re: Slow Oracle 8.0.5 Unloads

A copy of this was sent to pimpwillow_at_my-deja.com (if that email address didn't require changing) On Mon, 24 Jan 2000 20:58:08 GMT, you wrote:

>We are running the standard version of Oracle 8.0.5.2.1. We have one
>database which we unload, massage the data a bit, and then load a
>slightly smaller number of rows into a second DSS database for data
>mining. We unload about 30 million rows and load about 22 million
>daily.
>
>The unload takes longer than the direct path load (not parallel loads
>because we don't have the enterprise server). The unload takes 6 hours,
>the load 4 hours. These are done in sequence on the same 4-cpu Sun
>machine.
>
>Anyone know why the unload would take longer than the load, which has to
>rebuild some pretty chunky indexes?
>
>Is there anything that we can do to enhance the performance of these
>unloads? Loads?
>

how are you unloading.

Are you using array fetches?

>Thanks,
>Chris
>
>
>Sent via Deja.com http://www.deja.com/
>Before you buy.

--
See http://osi.oracle.com/~tkyte/ for my columns 'Digging-in to Oracle8i'... Current article is "Part I of V, Autonomous Transactions" updated June 21'st  

Thomas Kyte                   tkyte_at_us.oracle.com
Oracle Service Industries     Reston, VA   USA

Opinions are mine and do not necessarily reflect those of Oracle Corporation Received on Tue Jan 25 2000 - 07:29:13 CST