Re: Compute statisics

Interesting request.

It would appear that they don't want to the CBO to consider stats on small tables, probably small code tables and the like.

Since anything that small will probably get a FTS anyway, I wonder what they're thinking of?

Could be that your OS does 64k read and they figure an FTS will be done at the OS level anyway, at least if not found in the buffer cache.

Maybe my ramblings jogged your memory on some performance metric they mentioned some other time.

Do they have any metrics that prove the need for this?

Jared

On Monday 04 June 2001 16:20, Browett, Darren wrote:
> I have just received some notes from one our applications support, and they
> suggest after I compute statistics for the objects within their schema,
> that I then
> delete those statistics where num_rows * avg_row_len < 65000 ??
>
> What affect could this possibly have on the system ?
>
> I thought you would want statistics on all objects for the optimizer to
> function efficently
>
> Thank you in advance
>
> Darren
>
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