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[oracle-l] Re: Automatic or Uniform allocation

From: DENNIS WILLIAMS <DWILLIAMS_at_LIFETOUCH.COM>
Date: Thu, 22 Jan 2004 17:49:25 -0800
Message-ID: <F001.005DDEB4.20040122174925@fatcity.com>


We need to start moving these discussions to freelists per Jared's note.

Brad - I agree with Ron. I think it is critical to read "How to quit defragmenting . . ." before making the change to ensure you clearly understand the concepts and receive the benefits. If someone on the list knows of a more recent paper, please post it.

With uniform extents, you eliminate tablespace fragmentation, in addition to Ron's points.

Dennis Williams
DBA
Lifetouch, Inc.
dwilliams_at_lifetouch.com

-----Original Message-----
Sent: Thursday, January 22, 2004 9:49 AM To: Multiple recipients of list ORACLE-L

Brad,
 For LMT's I prefer uniform sizing that I can define to meet the needs of the data. If you use automatic the extend sizes will change drimatically as the number if extends increase. With a little planning you can have little waste in the tablespace and use the tablespace for multiple tables of the same size requirements. We have used the partitioning and LMT's for the yearly data we have, about 5 gig per table per year and the extend count is only around 100 with minimal free space. It makes it easier in the planning stage if you can keep it simple.
Ron

>>> Brad.Odland_at_qtiworld.com 01/22/2004 10:14:34 AM >>> for LMTs...

Advantages in uniform versus automatic?

Uniform 5 MB? 10 MB.....100MB etc....

thoughts would be appreciatd....

Thanks

Brad

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Author: Odland, Brad
  INET: Brad.Odland_at_qtiworld.com

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Author: DENNIS WILLIAMS
  INET: DWILLIAMS_at_LIFETOUCH.COM

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