Thanks so much David and John for your quick responses. These databases were recently transitioned to me from a team which are not part of our organization any more. Please bare with my knowledge, but is there any way to find if the past installations were done using YUM? We have been given VMs from some third party and we are responsible for maintaining and installing the database on them. Thanks for your help. -- View this message in context: http://postgresql.1045698.n5.nabble.com/Upgrade-from-9-1-to-9-10-tp5775290p5775311.html Sent from the PostgreSQL - general mailing list archive at Nabble.com. -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general