Re: High COMMIT times

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От Craig Jackson
Тема Re: High COMMIT times
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Msg-id CA+R1LV5ydSc=S8P=nOoUM_ayLJR4+30+DeQwocatDGz2AenO4A@mail.gmail.com
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Ответ на Re: High COMMIT times  (Laurenz Albe <laurenz.albe@cybertec.at>)
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Yes, these were deferrable foreign key constraints. 

On Fri, Jan 8, 2021 at 2:05 AM Laurenz Albe <laurenz.albe@cybertec.at> wrote:
On Thu, 2021-01-07 at 10:49 -0700, Craig Jackson wrote:
> We had a similar situation recently and saw high commit times that were caused
>  by having unindexed foreign key columns when deleting data with large tables involved.
> You might check to see if any new foreign key constraints have been added
>  recently or if any foreign key indexes may have inadvertently been removed.
>  Indexing the foreign keys resolved our issue.

Were these deferred foreign key constraints?

Yours,
Laurenz Albe
--
Cybertec | https://www.cybertec-postgresql.com



--
Craig 

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