Re: How to generate a WAL record spanning multiple WAL files?

From: Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org>
To: Bharath Rupireddy <bharath(dot)rupireddyforpostgres(at)gmail(dot)com>
Cc: PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: How to generate a WAL record spanning multiple WAL files?
Date: 2022-04-05 13:18:55
Message-ID: 202204051318.ptwo5ix3llgv@alvherre.pgsql
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On 2022-Apr-05, Bharath Rupireddy wrote:

> Hi,
>
> I wanted to have a WAL record spanning multiple WAL files of size, say
> 16MB. I'm wondering if the Full Page Images (FPIs) of a TOAST table
> would help here. Please let me know if there's any way to generate
> such large WAL records.

It's easier to use pg_logical_emit_message().

--
Álvaro Herrera 48°01'N 7°57'E — https://www.EnterpriseDB.com/
Tom: There seems to be something broken here.
Teodor: I'm in sackcloth and ashes... Fixed.
http://archives.postgresql.org/message-id/482D1632.8010507@sigaev.ru

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