The handle (LSN) of oldest WAL which still may be expected by The patron of the slot and so won't be routinely eradicated throughout checkpoints unless this LSN receives powering more than max_slot_wal_keep_size from the current LSN. NULL In the event the LSN of this slot has not been reserved. https://edwinmsxcg.oblogation.com/18476617/the-2-minute-rule-for-lynbet