Hi, If the requirement is to take online backup(hot) backup that can be used to do point in time recovery, you can rely on low-level API functionality mentioned earlier by Paul. If you to be care free about not missing any specific mount point other than default mount point, you can use pg_basebackup for online backup.
Pg_basebackup will take care of backing up all database files including custom tablespace and has the option to compress the backup.You can refer to below link for more information. https://www.postgresql.org/docs/11/app-pgbasebackup.html On Thu, Oct 22, 2020 at 12:12 PM W.P. <laure...@wp.pl> wrote: > Hi there, > > how to do "hot backup" (copying files) while database running? > > Not using pg_dump. > > Is there some equivalent of Oracle (I knew v8) "ALTER DATABASE BEGIN > BACKUP", which froze writes to database files, pushing everything to > redo files? > > > Laurent. > > > >