Here I am going to upgrade minor version of PostgreSQL12. In my example Database is PostgreSQL12.7 and OS is Centos7. Now, I am going to upgrade it on PostgreSQL12.8. Step 1. Before upgrading or doing anything on any server please take a backup of your entire database through pg_dump or pg_basebackup or through any other tools. Step 2. To see your current version of PostgreSQL Database [root@test /]# su postgres bash-4.2$ plsql postgres=# select version(); output : version ---------------------------------------------------------- PostgreSQL 12.7 on x86_64-pc-linux-gnu, compiled by gcc (GCC) 4.8.5 20150623 (Red Hat 4.8.5-44), 64-bit (1 row) Now exit from PostgreSQL. postgres=# \q bash-4.2$ exit Step 3. Stop PostgreSQL server [root@test /]# systemctl status postgresql-12.service [root@test /]# systemctl stop postgresql-12.service Step 4. Download latest rpm of PostgreSQL12...