Re: vacuuming postgresql15 issues

On Wed, Nov 8, 2023 at 9:18 AM Benjamin Acquaye <benjaminacquaye2(at)gmail(dot)com>
wrote:

> Hi all,
> I am trying to clean our database tuples with a manual vacuum but it's not
> working any help
>
> "n_dead_tup" 74 17 1 1 6 8 6 8 16 9
>
> thanks
> Ben
>

Check for long running transactions. Vacuum can only clean up dead rows if
there are no transactions running that could possibly need to see those old
rows. The following query will show all currently running transactions, in
order of transaction age along with an additional column to show their
runtime.

SELECT *, now() - xact_start AS xact_runtime FROM pg_stat_activity WHERE
state <> 'idle' ORDER BY xact_start;

--
Keith Fiske
Senior Database Engineer
Crunchy Data - http://crunchydata.com