On Sun, Mar 19, 2023 at 2:09 AM shashidhar Reddy <shashidharreddy...@gmail.com <mailto:shashidharreddy...@gmail.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...
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