Oracle-L: RE: export with "first rows"

From: Khedr, Waleed <Waleed.Khedr_at_FMR.COM>
Date: Thu, 15 Aug 2002 13:48:30 -0800
Message-ID: <F001.004B6E6B.20020815134830@fatcity.com>

It looks like you have very high water marks and/or high fragmented segments

Waleed

-----Original Message-----
Sent: Thursday, August 15, 2002 5:14 PM
To: Multiple recipients of list ORACLE-L

Hello,

We have the optimizer mode set to "first rows" on our (25gb) database to meet a vendor requirement. When I do an "direct" export, it runs for 6-7 hours.

When I change the optimizer mode to "choose" it runs in around an hour.
It also runs in an hour when I set the the optimizer mode to "first rows", and run stats on the "sys" schema.

I'm curious why this occurs. Has anyone experienced this ? Any ideas why this happens ? Is this normal behavior ? I could not find anything on metalink. thanks.

Oracle 8.1.7.2, aix 4.3.3.

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Author: Khedr, Waleed
INET: Waleed.Khedr_at_FMR.COM

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