pg_upgrade -V pg_upgrade (PostgreSQL) 10.4 pg_upgrade -b /fnal/ups/prd/postgres/v9_3_14_x64/Linux-2-6/bin -B /fnal/ups/prd/postgres/v10_4_x64/Linux-2-6/bin -d /data0/pgdata/ifb_prd_last -D /data0/pgdata/ifb_prd_last_104 -p 5433 -P 5434 -r -v –c -----Original Message----- From: Adrian Klaver [mailto:adrian.klaver@xxxxxxxxxxx] Sent: Tuesday, June 12, 2018 4:13 PM To: Murthy Nunna <mnunna@xxxxxxxx>; pgsql-general@xxxxxxxxxxxxxxxxxxxx; pgsql-admin@xxxxxxxxxxxxxxxxxxxx; pgsql-performance@xxxxxxxxxxxxxxxxxxxx Subject: Re: pg_upgrade 10.2 On 06/12/2018 01:58 PM, Murthy Nunna wrote: > Thanks Adrian. > I removed "-k" flag. But still got same error. > > There seems to be a postmaster servicing the old cluster. > Please shutdown that postmaster and try again. > Failure, exiting > Well according to the code in pg_upgrade.c that message should not be reached when the check option is specified: if (!user_opts.check) pg_fatal("There seems to be a postmaster servicing the old cluster.\n" "Please shutdown that postmaster and try again.\n"); else *live_check = true; Can we see the actual command you ran? -- Adrian Klaver adrian.klaver@xxxxxxxxxxx