Hi,
I’m currently trying to upgrade ArcGIS Enterprise from 10.8.1 to 10.9.1. It’s an HA environment installed in Linux Redhat 7.
I successfully run the install of Portal 10.9.1 in Portal1.
After that I tried to run the upgrade. Unfortunately, it wasn’t a success. I received the following error.

When I checked the folder /var/arcgis/portal/usr/arcgisportal/logs/database/pgsql.log, it shows that PostgreSQL version is not correct.

Any idea how to fix that problem?
Thanks
Zakaria