Re: pg_upgrade: can I use same binary for old & new?

["David G. Johnston" <david.g.johnston@xxxxxxxxx>]

On Sat, Jul 5, 2025 at 9:52 AM Pierre Fortin <pf@xxxxxxxxxxx> wrote:

If new pg_upgrade is the only binary, will both -b and -B default to it?
Maybe at minimum I may need to specify:
$ pg_upgrade -b /usr/bin -d data15 -D data17 -k

 pgsql/pgsql-18/bin

> ./pg_ctl -D /var/pgsql/postgres-17 start
waiting for server to start....2025-07-05 16:58:56.559 UTC [293839] FATAL:  database files are incompatible with server
2025-07-05 16:58:56.559 UTC [293839] DETAIL:  The data directory was initialized by PostgreSQL version 17, which is not compatible with this version 18beta1.
pg_ctl: control file appears to be corrupt

David J.