Re: analyze after truncate

You are truncating a table so as to add another 0.7% of its size in inserts, and to update 1.4% of the rows?

My first thought would be to stop doing that.

Modify the extent sizes (if needed) so that your 50k rows fairly fill up the extents allocated on the insert ( so as to avoid wasting space needlessly ) and use insert..append.

Updating 100k row should not be too painful.

Truncating the table for this process seems rather extreme.

Re the analyze for your current situation, you could always use stored outlines between periods that you wish to run the analyze command.

You would of course need to test this first in a non-production environment.

Jared

On Tue, 2003-11-25 at 13:34, sat0789_at_fastmail.fm wrote:
> Hello All,
> We have a huge table both is terms of number of columns and rows. It is
> list partitioned. it has 7 mill rows and its avg row length is 600
> bytes. One of the developers has come up with a method of truncating
> and reloading the table on a daily basis thorough sqlloader. everyday
> there are about 50,000 rows insert and 100,000 rows update. My question
> is do i need to reanalyze this table on a daily basis. Even though we
> truncate the table the statistics still stays on with the table and
> since the table goes thorugh only minimal change, is it advisable to
> analyze it on a daily basis or can i analyze it on a weekly basis.
>
> Please advice..
>
> Thanks,
>
> Sat.
>
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