Re: Online Index Rebuild Tuning

On Thursday 05 December 2002 13:35, Mark Richard wrote:
> Also, I have heard about compressing indexes, but it is something I have
> never used before. Can anyone shed some light on the topic? Are there any
> drawbacks (ie: reduced IO but increased processing)?
>

To obtain optimal results with a compressed index, you need to build it with the least selective columns as the leading columns.

A great deal of compression can be had, but you need to be careful where you use it.

It can lead to a lot of buffer busy waits.

I found that one out the hard way. ;)

Jared

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Author: Jared Still
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