Re: stale partition statistics

Did you have ANY partitions that should have been candidates for stats gathering ? If so can you go back into the optimizer stats history and check whether any column in the GLOBAL stats has a histogram that changed type.
There were some difficulties with hisograms that have been written about (maybe Maria Colgan) with new partitions triggering stats gathering on old partitions - but I thought was a 12c problem.

Regards
Jonathan Lewis

On Fri, 5 Mar 2021 at 15:08, Noveljic Nenad <nenad.noveljic_at_vontobel.com> wrote:

> Is there a way to find out if partition statistics were stale at some
> point in time without restoring the database?
>
>
>
> I’m trying to find out why the partition statistics were calculated on
> 19c. I have incremental statistics and the statistics job ran with REPEAT,
> so it shouldn’t have initiated the calculation of partition statistics
> unless they were stale. But I doubt that, because these are partitions with
> old data, which shouldn’t have changed.
>
>
>
> Best regards,
>
>
>
> Nenad
>
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