Most of the documentation I have seen say to collect for an hour or so at high usage times. Only collect again if your usage pattern changes. On Mon, Sep 29, 2008 at 11:48 AM, Newman, Christopher < cjnewman@xxxxxxxxxxxxx> wrote: > Anyone have any recommendations for the collection of system statistics? > Any recommendation on how long to run the capture? I've heard 72 hours > before (ie, M-W during a business week, which should represent the bulk > of activity, shifting the window if you have more activity on X day). > > Is there any reason to re-gather system statistics if hardware remains > unchanged? > > Also, when you want to ensure you can go back to old system stats, do > you export, or use a stats table, or some other method? > > Thanks - Chris > > -- > //www.freelists.org/webpage/oracle-l > > > -- Andrew W. Kerber 'If at first you dont succeed, dont take up skydiving.'