The tackle (LSN) of oldest WAL which nonetheless could possibly be demanded by The patron of this slot and thus won't be instantly taken off all through checkpoints unless this LSN gets powering greater than max_slot_wal_keep_size from the current LSN. NULL if the LSN of the slot has never been https://caidenfuioo.ampedpages.com/little-known-facts-about-slot-online-45423274