Re: Wal_keep_size

If wal_keep_size is more than max_wal_size wouldn't it always trigger
checkpoint ?

On Tue, 7 Oct 2025, 03:08 Thomas Carroll, <tomfecarroll(at)yahoo(dot)com> wrote:

> Hope nobody minds me chipping in here.
>
> The answer is "not necessarily." The names make them seem closely
> related, but not so much.
>
> max_wal_size is all about *checkpoints*. When the WAL exceeds this,
> Postgres will try to run a checkpoint. Under some circumstances it won't,
> but let's keep it simple for now.
>
> wal_keep_size is all about *replication*. Replicas need WAL files to
> stick around for long enough that they can process them. wal_keep_size is
> a minimum figure.
>
> Tom
> On Monday, October 6, 2025 at 03:51:17 PM EDT, Raj <
> rajeshkumar(dot)dba09(at)gmail(dot)com> wrote:
>
>
> Should Wal_keep_size <= max_wal_size ?
>