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What can cause Wasted space on indexes

555329Oct 19 2007 — edited Oct 19 2007
Please,

From the EM manager console, I found that a table showing the following stats:
Table X: Space allocated 10M, space used: 9M, wasted space 0.1%
Index_X: Space allocated 12M, space used: 7M, Wasted space 40%


When I deleted the index_X, and recreated it, the above stats on the index_X did change !!,

My question:
What can cause an index to have a huge wasted space even though I recreated it?

Thanks
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Locked on Nov 16 2007
Added on Oct 19 2007
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