Re: Stats and behavior weirdness

Have you gathered system stats ?

Kevin Lidh <kevin.lidh_at_gmail.com> wrote: Wow, thank you Juan for those. They are explicitly set by the CRM application to caching=0 and adj=1. When I changed them to 90 and 10 respectively, I got the same explain plan as on my Linux box and production (and another instance tested later). Since I don't have any control over the CRM application and there's a support issue when you make changes, I can "fix" this with a stored outline. But I still don't understand why the development database uses the same information as my Linux copy (as it is just an export) and comes up with a different plan AND why it performs so poorly. There is something out there that these values counter. But this definitely gives me a direction to investigate.

  On 3/6/06, Juan Carlos Reyes Pacheco <juancarlosreyesp_at_gmail.com> wrote: Hi Kevin, why don't you try to set this parameters in one session OPTIMIZER_INDEX_COST_ADJ = 10
OPTIMIZER_INDEX_CACHING = 90 When suddenly, the performance moves from seconds to almost an hours, without good reasons, I solve this settings this parameters, when the code can be improved.

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