Dear Colleagues, After a streaming standby has been down for a time, I know of two options for it to catch up with the master: 1. The replica can fetch all the necessary WAL records via the replication protocol from the master (unless max_slot_wal_keep_size is not the default -1, all the required WAL archives should be available from the master). 2. The replica can be provided with a restore_command and will fetch all WAL files from the WAL archive before starting streaming WAL from the master. Which is the preferred way? Of course if max_slot_wal_keep_size is limited, the second options seems the only safe one. OTOH, if the master does not write to a WAL archive, only the first option is left to us. -- Victor Sudakov VAS4-RIPE http://vas.tomsk.ru/ 2:5005/49@fidonet
