Oracle-L: RE: IMPORT sloooowwww

From: Cary Millsap <cary.millsap_at_hotsos.com>
Date: Thu, 29 Aug 2002 09:08:50 -0800
Message-ID: <F001.004C2B68.20020829090850@fatcity.com>

Trace it. www.hotsos.com/dnloads/1/10046a

Cary Millsap
Hotsos Enterprises, Ltd.
http://www.hotsos.com

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-----Original Message-----
Terry
Sent: Thursday, August 29, 2002 10:23 AM To: Multiple recipients of list ORACLE-L

Oracle 8.1.7 on Solaris 8

I am testing and upgrade from 7.3.4 to 8.1.7. Because the test server is
solaris 8, and I can't find the patches for 7 anymore, I am trying to upgrade via an export and import. Besides, the DB is small - less than 2G.
The export was done with compress=n. There are 200+ tables to be imported.
It is taking 3+ minutes per table for the import, even on tables that have 0
rows. (Though it does take longer than that for the few tables with over
50K rows).

I have tried:

Simple import.
Import with indexes=n
Import with table and constraints (but not indexes) pre-created and indexes=n ignore=y
All of the above with the buffer set to 8M (This actually slows the import down, taking 5+ minutes per table).
Increasing the sort_area_size for the DB to twice as large as it was and trying the above.

In looking at how long it takes, the table imports in a second or less, but
it takes 3 minutes + to start the import of the next table. I'm not sure
what it is doing for 3 minutes after the table imports.

Does anyone have any ideas how I can speed this up? 10 hours to import a
2G. DB is extreme and unacceptable.

TIA. Terry

Terry Ball, DBA
Birch Telecom
Work: 816-300-1335
FAX: 816-300-1800
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Author: Ball, Terry
INET: TBall_at_birch.com

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Author: Cary Millsap
INET: cary.millsap_at_hotsos.com

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