Re: PGA on higher version

  Thank you. I will look into those options.

Is it good practice to let the pga_aggregate_limit set as NULL i.e. no hard limit defined(like it was in previous versions) so that it can go max upto the available memory in the host?

On Fri, May 21, 2021 at 2:03 PM Noveljic Nenad <nenad.noveljic_at_vontobel.com> wrote:

> Another advisor that can consume significant PGA is statistics advisor.
>
>
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> We’ve switched it off too.
>
>
>
> Best regards,
>
>
>
> Nenad
>
>
>
> *From:* oracle-l-bounce_at_freelists.org <oracle-l-bounce_at_freelists.org> *On
> Behalf Of *Mohamed Houri
> *Sent:* Freitag, 21. Mai 2021 09:00
> *To:* Pap <oracle.developer35_at_gmail.com>
> *Cc:* Powell, Mark <mark.powell2_at_dxc.com>; Lok P <loknath.73_at_gmail.com>;
> Oracle L <oracle-l_at_freelists.org>
> *Subject:* Re: PGA on higher version
>
>
>
> Pap,
>
>
>
> I have also been confronted with an increase in PGA consumption recently
> because of MMON_SLAVE not freeing up its used PGA memory. There is a MOS
> note which explains this issue
>
>
>
> *High PGA Consumption By Mmon Slaves In The Server (Doc ID 2700130.1)*
>
>
>
> I have also disabled the tunning advisor and the ADDM generation because I
> have observed a PGA leak when the ADDM advisor is launched as well.
>
>
>
> *Bug 31695062 - PGA Leak in ADDM Advisor Framework (Doc ID 31695062.8)*
>
>
>
> This is why for almost all 19c applications I am working on, I tend to
> disable both the tuning advisor and the space advisor
>
>
>
>
>
> Best regards
>
> Mohamed
>
>
>
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