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Home -> Community -> Mailing Lists -> Oracle-L -> Re: Checking the rebuildability of an index
> Bottom Line: I stand by my original premise -
> statistics alone do not determine an indexes candicacy
> for rebuild. Some additional knowledge, eg "I know
> the rows I've deleted will never be replaced" etc is
> needed.
Nice test case Connor, thanks.
Q: What are the chances of knowing whether or not subsequent inserts will be able to reuse a slot?
This would require a history of what is usually inserted, and making an assumption about future inserts based on that knowledge.
I'm sure there is a good method for doing this, though I don't know what it is. Even so, it may not be practical to use.
It seems like 20% of the effort needed to create a 'perfect' solution would provide the needed information to determine if an index should be rebuilt, and be correct 80% of the time.
Jared
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