Thanks @Laurenz Albe , let me take a look at the bug and view that you shared.
I didn't mention Vacuum full in my message, I mentioned vacuum analyze; it is scheduled to run every weekend.
On Wed, Feb 12, 2025 at 1:00 PM Laurenz Albe <laurenz.albe@xxxxxxxxxxx> wrote:
On Wed, 2025-02-12 at 10:14 +0530, srinivasan s wrote:
> One of the tables in our database suddenly started growing very fast without
> any changes to the environment. it has grown over 10GB in the last week and
> this is causing performance issues. We ended up adding an index to solve the
> performance problem but the table growth didn't stop. It is growing continuously.
> we are using postgres version 12 on ubuntu
That's a mistake. Use a supported version. As it is, you could be suffering
from some already fixed (data corruption?) bug.
> We are running a vacuum analsye on a full database every weekend and an auto
> vacuum is set up.
VACUUM (FULL) is also a mistake. It should be a regular VACUUM.
Funny, you say that you are experiencing bloat. How can that be if you are
running VACUUM (FULL)? Perhaps something is blocking VACUUM from removing
dead rows:
https://www.cybertec-postgresql.com/en/reasons-why-vacuum-wont-remove-dead-rows/
> My observation on the DB so far.
>
> [...]
>
> 3. Also noticed that there is a auto vacuum job running on the table with
> (to prevent wraparound)
>
> I am not sure if this auto vacuum (to prevent wraparound) is progressing,
> it is running for more than 15 hours and status is active.
You should check "pg_stat_progress_vacuum" to see if the numbers are changing,
that is, if there is actually any progress. That may also give you a clue as
to how long it will still take.
Yours,
Laurenz Albe
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