Title: Q about autoextent tablespaces and performance

Accidently hit send before I finished my response...


Anyway, one thing I used to do is give them a CRETAB/CREIDX script and have them run it.

This will allow you to build the table and indexes ahead of time, and of the size you desire.  You can also have the script create an initial setting of the size of the existing table.  Take a look at the cretab.sql script on my site which is what I used to use when I had to do such things.

 

"Do not criticize someone until you walked a mile in their shoes, that way when you criticize them, you are a mile a way and have their shoes."

Christopher R. Spence
Oracle DBA
Phone: (978) 322-5744
Fax:    (707) 885-2275

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North, Chelmsford 01863
 

-----Original Message-----
From: Schoen Volker [mailto:[EMAIL PROTECTED]]
Sent
: Friday, October 05, 2001 1:10 PM
To: Multiple recipients of list ORACLE-L
Subject: Q about autoextent tablespaces and performance

 

Hi list,

I need some opinions about following question.

I have a developer box with about 20 schemas. Sometimes our customers send us a export of there data which I had to import into our develop instance. My problem is that I don't now how much space I need for those imports. My solution is to create tablespaces with about 50 MB and set autoextent on (localy managed). I import the customers data first time and tablespace may use 200 mb. After some weeks I get the next export. After import, tablespace growth to 300 mb.

So now my question, is it better to create a large tablespace, because of continouges db and hdd blocks, or does this have no influence or small influence on performance. I prefer to build small tablespaces with limited autoextent option. Reason is, that my cold backups were quicker, cause I do not have to reserve a lot of unused space for my tablespaces.

I have databases on Suse Linux, NT4 and W2K. This question is for all platform. If there are some platform specific issues, please let me know.

Hope you understand my question.

TIA

Volker Schoen
E-Mail: mailto:[EMAIL PROTECTED]
http://www.inplan.de

 

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