Re: auto vacuum question

On 8/28/23 13:06, Alan Stange wrote:
> All,
>
> We recently changed the name of the superuser role in our database, and
> then noticed some issues with the autovacuum processes.  We are running
> 15.3, and had a login role, lets call it 'red', which had the superuser
> attribute assigned to it.   This was the original owner/creator of all
> the database objects, and the login role ended up getting used in some
> ways for which the superuser attribute was no longer appropriate.
>
> So we elected to make a new role, lets call it 'reddba', which had
> tightly controlled entitlements, and which also had the super user
> attribute added to it.  After a couple of weeks and a lot of testing, we
> removed the superuser attribute from the original 'red' account.  All
> was working as expected.
>
> After a bit we noticed some warnings in the postgresql server log file
> of the form 'WARNING:    skipping "tablexxx"   --- only table of
> database owner can vacuum it" where tablexxx is many of the table names
> in our system.

Are you sure that is coming from autovacuum?

What are the log lines preceding the WARNING?

What is the complete warning line?

>
> We restored the superuser role to the original 'red' login role and
> these messages went away.
>
> We are not running any explicit vacuum's.    As far as I can tell, these
> warnings were comming from the autovacuum processes, and we did also
> notice that some query stats became stale which I assume is related to
> these same warnings.
>
>
> So, I'm wondering how we can move the superuser role from role A to B,
> so that the autovacuum process will still work?   I googled around a
> bit, but didn't come up with anything useful for this.
>
> Thank you,
>
> Alan
>
>

--
Adrian Klaver
adrian(dot)klaver(at)aklaver(dot)com