Hello, dear guru =) help me to fix situation when no change made on primary and standby show lag more than 15 minutes: master : postgres=# select * from pg_stat_replication ; -[ RECORD 1 ]----+------------------------------ pid | 18553 usesysid | 117942 usename | replication application_name | walreceiver client_addr | 10.62.43.60 client_hostname | client_port | 45281 backend_start | 2015-06-15 00:02:00.095195+03 state | streaming sent_location | 62/BC000000 write_location | 62/BC000000 flush_location | 62/BC000000 replay_location | 62/BC000000 sync_priority | 0 sync_state | async
standby: postgres=# SELECT (extract(epoch from now() - pg_last_xact_replay_timestamp() ))::int AS slave_lag; slave_lag ----------- 1030
on master : postgres=# select name,setting from pg_settings where lower (category) like '%write%log%'; name | setting ------------------------------+------------------------------------------------------------------- archive_command | cp -i %p /var/lib/postgresql/9.3/main/pg_archivelog/%f </dev/null archive_mode | on archive_timeout | 600 checkpoint_completion_target | 0.7 checkpoint_segments | 32 checkpoint_timeout | 300 checkpoint_warning | 30 commit_delay | 0 commit_siblings | 5 fsync | on full_page_writes | on synchronous_commit | on wal_buffers | 2048 wal_level | hot_standby wal_sync_method | fdatasync wal_writer_delay | 200 (16 rows)