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From: Laurenz Albe <[email protected]>
To: kasem adel <[email protected]>
To: pgsql-admin <[email protected]>
Subject: Re: Wal file increase
Date: Mon, 15 Dec 2025 07:31:05 +0100
Message-ID: <[email protected]> (raw)
In-Reply-To: <CAP-pBm9kY6HafeGD-1vrL8UqaQLu2jFJthBjyOsypY=iGJRBxA@mail.gmail.com>
References: <CAP-pBm9kY6HafeGD-1vrL8UqaQLu2jFJthBjyOsypY=iGJRBxA@mail.gmail.com>

On Sun, 2025-12-14 at 17:30 +0200, kasem adel wrote:
> Appreciate your usual support that we facing an issue when take pg_basebackup for 4 TB
> database in standby server and when backup finished we face huge number of wal file
> with huge size generated for 6 hours the cause replication interruption.

If you want help with that, you will have to give us enough information to explain what
happened.

- What exactly is a "replication interruption", and how do you diagnose it?

- Are you using streaming replication or logical replication?

- If it is streaming replication, are you using a replication slot?

- It is expected that if you suspend replication and have a replication slot, WAL will
  pile up on the primary.  But what is the connection with pg_basebackup?

Yours,
Laurenz Albe

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