Ramalingam, Sankarakumar <Sankarakumar.Ramalingam@xxxxxxxxxx> wrote: > We have a standby set up between two sites in two different locations. The > replication was going on well and suddenly it stopped due to error > > 2015-09-08 16:07:51 EDT LOG: streaming replication successfully connected to > primary > > 2015-09-08 16:07:51 EDT FATAL: could not receive data from WAL stream: FATAL: > requested WAL segment 0000000C0000035E000000F0 has already been removed > > > > I am unable to start the DB as well. > > Should I restore a fresh copy from production on to this standby to make things > in order? If yes, how to go about it. I am quite new to Postgres. Any help/ > suggestions will be greatly appreciated. Yeah, the master doesn't have/contains the requested WAL-File, you have to rebuild the replication with a fresh copy from the master. You can use pg_basebackup, it's well documented. For the future: increase wal_keep_segments and/or use physical replications slots, if you are using 9.4 or higher. Andreas -- Really, I'm not out to destroy Microsoft. That will just be a completely unintentional side effect. (Linus Torvalds) "If I was god, I would recompile penguin with --enable-fly." (unknown) Kaufbach, Saxony, Germany, Europe. N 51.05082°, E 13.56889° -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general