Re: Getting error while upgrading postgres from version 12 to 13

On 3/21/23 03:29, shashidhar Reddy wrote:
> Actually I was using the below command to check the compatibility, it
> worked without any issue with 12.6 but it is not working with 1version 2.14
> time /usr/lib/postgresql/13/bin/pg_upgrade --old-bindir
> /usr/lib/postgresql/12/bin --new-bindir /usr/lib/postgresql/13/bin
> --old-datadir /usr/pgdata/pg_data --new-datadir /usr/pgdata/pg_data2
> --link --check
>
> I have used a different directory for postgres13 from postgres 12.

The issue is not that they are the same directory it is:

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)

Check the value that is the PG_VERSION file in each data directory. It
should be 12 in /usr/pgdata/pg_data  and 13 in /usr/pgdata/pg_data2.

>
> On Mon, Mar 20, 2023 at 11:07 AM <abdulsayeed24@gmail.com
> <mailto:abdulsayeed24@gmail.com>> wrote:
>
>     Hello,
>
>     As per error it seems you have initiated source data with PG13
>     binaries.
>
>     Could you please connect to both source and target psql and share
>     out of select versions();
>
>     Also share pg_upgrade complete command which you are using.
>
>
>
>     Regards,
>     Abdul Sayeed
>
>
>
>     Sent from myMail for iOS
>
>
>     Sunday, 19 March 2023 at 11:29 AM +0530 from
>     david.g.johnston@gmail.com <mailto:david.g.johnston@gmail.com>
>     <david.g.johnston@gmail.com <mailto:david.g.johnston@gmail.com>>:
>
>         On Sat, Mar 18, 2023 at 7:27PM shashidhar Reddy
>         <shashidharreddy001@gmail.com
>         <mailto:shashidharreddy001@gmail.com>> wrote:
>
>             Can someone please help me with this?
>
>
>
>         You haven't given others enough information to help you.
>         Present to the fullest extent possible your current environment
>         and the commands you are running.  Showing that psql itself
>         works on both running clusters would be a good start.  Show
>         inputs, not just outputs those inputs creates.
>
>         David J.
>
>
>
> --
> Shashidhar

--
Adrian Klaver
adrian.klaver@aklaver.com