On Wed, Jul 06, 2022 at 06:21:24PM +0200, talk to ben wrote: > I am not sure why, but I can't find "basic_archive.archive_directory" in > pg_settings the same way I would find for example : > "pg_stat_statements.max". > > [local]:5656 benoit@postgres=# SELECT count(*) FROM pg_settings WHERE name > = 'basic_archive.archive_directory'; > count > ------- > 0 > (1 row) > > show can find it if I use the complete name but tab completion can't find > the guc: > > [local]:5656 benoit@postgres=# show basic_archive.archive_directory; > basic_archive.archive_directory > --------------------------------- > /home/benoit/tmp/tmp/archives > (1 row)
I think the reason is that only the archiver process loads the library, so the GUC isn't registered at startup like you'd normally see with shared_preload_libraries. IIUC the server will still create a placeholder GUC during startup for custom parameters, which is why it shows up for SHOW commands. -- Nathan Bossart Amazon Web Services: https://aws.amazon.com
