Re: ORACLE TUNING

What about current statistics on both DBs? Is the distribution of the data reasonably the same? Are they both using the same optimizer?

I would state that "obiviously" something is different between the two instances; otherwise you'd get exactly the same results.

SRAJENDRAN_at_nlfs.com wrote:
>
> Hello:
>
> I have an identical query that has similar explain plan on both Prod and Dev
> environment, only difference being that certain indexes are performing
> unique scan on Prod and Range scan on Dev.
> Can you cast some light on how this can be matched and under what conditions
> this discrepancy might occur.
>
> Thank you,
>
> Srini
>
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