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Home -> Community -> Mailing Lists -> Oracle-L -> Locally Managed Tablespace Uniform Extent
I have to move a 7.3.4 database to 8i and I want to use the uniform extent size to reduce fragmentation. I read the article "stop defragmenting and start living" and it indicates to have 3 extent sizes - 128K, 4M, 128M.
I also read an article on Steve Adams site that indicates to keep the number of extents under (db_block_size/16) - 7 ( which in my case ( 8k block) would be 505 extents. )
In the database I am moving there are some segments that are currently 1GB in size, if i was to put those in the 4M tablespace it would already have over 250 extents starting off. Are there any other performance type issues to consider?
Should I create another extent size between 4M and the 128M? Maybe 64M increment?
Thanks,
Jim
Jim Walski
ClassicPlan
Chino, CA 91710
email jwalski_at_classicplan.com
http://www.classicplan.com
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Author: Jim Walski
INET: jwalski3_at_classicplan.com
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