Re: Wal file increase

On Mon, 2025-12-15 at 07:25 +0000, kasem adel wrote:
> Thanks for your support We have physical replication connection with Postgres node standby
> and have another replication slot with logical replication with another node and every day
> after run pg_basebackup we face huge number of file created and size per every hour is 23GB
> and in normal size is 0.8 GB and in logical replication we see in logs it’s in same
> checkpoint but baseline change and we run pg_basebackup with -X fetch -C fast.

pg_basebackup does not increase the WAL volume, except by the full-page images that get
written after any checkpoint.  So you'd need to find an explanation for that.

"-X fetch" is not a good choice.  Use "-X stream".

Anyway, you didn't answer all my questions.

Yours,
Laurenz Albe