Message-ID: <c1d238173bf8ba94018b65beb4e1670f0d37f766.camel@cybertec.at>
Subject: Re: Long running query causing XID limit breach
From: Laurenz Albe <laurenz.albe@cybertec.at>
To: sud <suds1434@gmail.com>, Simon Elbaz <elbazsimon9@gmail.com>
Cc: yudhi s <learnerdatabase99@gmail.com>, pgsql-general
	 <pgsql-general@lists.postgresql.org>
Date: Wed, 05 Jun 2024 12:22:57 +0200
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Precedence: bulk

On Wed, 2024-06-05 at 13:09 +0530, sud wrote:
> > > One follow up question i have , as we are setting one of the standby/=
replica
> > > with value idle_in_transaction_session_timeout=3D-1 which can cause=
=C2=A0the WAL's
> > > to be heavily backlogged in a scenario=C2=A0where we have a query run=
ning for very
> > > long time on that instance. So in that case will there be chances of =
instance
> > > restart and if that can be avoided anyway?
>=20
> My apologies. I was meant to say setting up "max_standby_streaming_delay"=
 To -1.
> Which means unlimited lag.=C2=A0

There should never be a restart unless you perform one or the standby crash=
es.
If you mean that you want to avoid a crash caused by a full disk on the sta=
ndby,
the answer is probably "no".  Make sure that you have enough disk space and
use monitoring.

Yours,
Laurenz Albe