Received: from malur.postgresql.org ([217.196.149.56])
	by arkaria.postgresql.org with esmtps  (TLS1.3) tls
 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
	(Exim 4.94.2)
	(envelope-from <pgsql-admin-owner+archive@lists.postgresql.org>)
	id 1qh0T8-000bsv-KQ
	for pgsql-admin@arkaria.postgresql.org; Fri, 15 Sep 2023 04:30:15 +0000
Received: from localhost ([127.0.0.1] helo=malur.postgresql.org)
	by malur.postgresql.org with esmtp (Exim 4.94.2)
	(envelope-from <pgsql-admin-owner+archive@lists.postgresql.org>)
	id 1qh0T5-00Do7M-Jk
	for pgsql-admin@arkaria.postgresql.org; Fri, 15 Sep 2023 04:30:11 +0000
Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29])
	by malur.postgresql.org with esmtps  (TLS1.3) tls
 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
	(Exim 4.94.2)
	(envelope-from <vas@sibptus.ru>)
	id 1qh0T4-00Do6x-PR
	for pgsql-admin@lists.postgresql.org; Fri, 15 Sep 2023 04:30:10 +0000
Received: from admin.sibptus.ru ([2001:19f0:5001:21dc::10])
	by magus.postgresql.org with esmtps  (TLS1.3) tls
 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
	(Exim 4.94.2)
	(envelope-from <vas@sibptus.ru>)
	id 1qh0T0-005AIY-VB
	for pgsql-admin@lists.postgresql.org; Fri, 15 Sep 2023 04:30:09 +0000
DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sibptus.ru;
	s=20181118; h=Message-ID:Subject:To:From:Date:In-Reply-To;
	bh=fv4y7F0l9l/jwemK+pITizngYQ5Wsjaa78IMJXzvl7Y=; b=hxqk48Ht1dxYq5iCWBnfsY/Qne
	NH9ntVW7f1HkB+29faK1mHOQ8NkD8N8IgpXfCSlhmJ33VzTHsdZpPgRWYZUCnGCHWc8yiprjP47wK
	v1reaZRN0Jauq29/v/9f9HsZuPVgxQHY4589NSHXHee0aSra14UMzwLvTNYf5OoGfIbI=;
Received: from vas by admin.sibptus.ru with local (Exim 4.95 (FreeBSD))
	(envelope-from <vas@sibptus.ru>)
	id 1qh0Sy-000HnB-JE
	for pgsql-admin@lists.postgresql.org;
	Fri, 15 Sep 2023 04:30:04 +0000
Date: Fri, 15 Sep 2023 04:30:04 +0000
From: Victor Sudakov <vas@sibptus.ru>
To: pgsql-admin@lists.postgresql.org
Subject: Blocking queries on a hot standby?
Message-ID: <ZQPdzIoDQFQwnlQL@admin.sibptus.ru>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
X-PGP-Key: http://admin.sibptus.ru/~vas/
X-PGP-Fingerprint: 10E3 1171 1273 E007 C2E9  3532 0DA4 F259 9B5E C634
List-Id: <pgsql-admin.lists.postgresql.org>
List-Help: <https://lists.postgresql.org/manage/>
List-Subscribe: <https://lists.postgresql.org/manage/>
List-Post: <mailto:pgsql-admin@lists.postgresql.org>
List-Owner: <mailto:pgsql-admin-owner@lists.postgresql.org>
List-Archive: <https://www.postgresql.org/list/pgsql-admin>
Archived-At: 
 <https://www.postgresql.org/message-id/ZQPdzIoDQFQwnlQL%40admin.sibptus.ru>
Precedence: bulk

Dear Colleagues,

Can you imagine, at least theoretically, any kind of query on a
physical replica (hot standby) which would block other queries on the
same replica?


-- 
Victor Sudakov VAS4-RIPE
http://vas.tomsk.ru/
2:5005/49@fidonet