On Thu, Jul 19, 2012 at 7:17 PM, Ali Pouya <alipouya2@xxxxxxxxx> wrote: > On the replica I can use the function pg_last_xact_replay_timestamp(). > But on the master I only can use pg_current_xlog_location() which does not > return a timestamp. I do not know any function returning the timestamp. > > Is there any way to get the timestamp relative to the result of > pg_current_xlog_location() ? According to mine own research of this problem there are no way to get it. What I would do to monitor the replication lag is 1. execute this on master SELECT txid_current(), that will create a minimal wal entry 2. compare pg_last_xact_replay_timestamp() with current time on replica. assuming that clocks are in sync on both servers of course. -- Sergey Konoplev a database architect, software developer at PostgreSQL-Consulting.com http://www.postgresql-consulting.com Jabber: gray.ru@xxxxxxxxx Skype: gray-hemp Phone: +79160686204 -- Sent via pgsql-admin mailing list (pgsql-admin@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-admin