[arch-general] How to upgrade a postgresql database?

Hello, I'm trying to upgrade a postgresql database, but it doesn't work. I've also found this: https://wiki.archlinux.org/index.php/PostgreSQL#Upgrading_PostgreSQL This doesn't work for me, because there isn't any folder /opt/pgsql-9.6/bin anymore - all the binaries are in /usr/bin. This implies, there're no two versions of the binaries available, nor any oldir or newdir (for -b / -B parameters). It seems, I have to downgrade postgresql first, dump the database, and restore it after upgrading again. Is there any easier method available (i.e. some script which could do this automatically)? Kind regards Peter