Horton

Re: Trying to understand Tuple Header

David G. Johnston <david.g.johnston@gmail.com>

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From: "David G. Johnston" <david.g.johnston@gmail.com>
To: "Subramanian,Ramachandran" <ramachandran.subramanian@alte-leipziger.de>
Cc: "pgsql-novice@lists.postgresql.org" <pgsql-novice@lists.postgresql.org>
Date: 2026-05-03T19:02:49Z
Lists: pgsql-novice 
On Sunday, May 3, 2026, Subramanian,Ramachandran <
ramachandran.subramanian@alte-leipziger.de> wrote:

> How does postgres know that this 4th tuple has been rolled back ?  Please
> help me learn that.
>
>
The pg_xact file holds information pertaining to whether a transaction
produced live or dead tuples upon ending.

David J.