| From: | Ondřej Světlík <osvetlik(at)flexibee(dot)eu> |
|---|---|
| To: | "pgsql-admin(at)postgresql(dot)org" <pgsql-admin(at)postgresql(dot)org> |
| Subject: | Re: Autovacuum of pg_database |
| Date: | 2016-05-05 15:55:13 |
| Message-ID: | 572B6CE1.1010208@flexibee.eu |
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| Lists: | pgsql-admin |
Dne 5.5.2016 v 17:51 Alvaro Herrera napsal(a):
> Vicky Soni - Quipment India wrote:
>> Hello,
>>
>> I have observed that after upgrading from 9.3 to 9.4 on windows, autovacuum keep running again and again.
>>
>> In 9.3 this was not true. Any recommendations?
>
> Maybe there is a multixact wraparound problem. What 9.3 were you
> running previously, and what 9.4 did you upgrade to? Can you share the
> output of pg_controldata? Please paste the output of this query
> select datname, datminmxid from pg_database
>
That sound's reasonable, our autovacuum problems started with processes
labeled as 'to prevent wraparound' (on pg_shdepend). We use 9.4.
Ondřej
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