On Wed, Jul 27, 2016 at 12:47 PM, Bruce Momjian <bruce@xxxxxxxxxx> wrote: > Yes. I was saying I don't know how to improve pg_upgrade to address it. This problem is there even in oracle/db2/sqlserver. None of them allow rollback to the lower version unless it is a minor version upgrade. Major version upgrade almost definitely involves change in transaction log (WAL) structure and hence no rollback. -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
