> On Sun, Mar 19, 2023 at 2:09 AM shashidhar Reddy
> <shashidharreddy001(at)gmail(dot)com <mailto:shashidharreddy001(at)gmail(dot)com>> wrote:
>
> Hello,
>
> I am in a process of upgrading postgresql from version 12 to 13
> using pg_upgrdrade but I am getting error stating
>
> FATAL: database files are incompatible with server
> DETAIL: The data directory was initialized by PostgreSQL version 13
> , which is not compatible with this version 12.14 (Ubuntu
> 12.14-1.pgdg18.04+1)
>
> Please help me on this issue.
You have configured the postgres v12 server to use a directory where
there are data from a postgres v13 server. Evidently that can not work...
*t