F.37. old_snapshot — inspect old_snapshot_threshold
state #
The old_snapshot
module allows inspection of the server state that is used to implement old_snapshot_threshold.
F.37.1. Functions #
pg_old_snapshot_time_mapping(array_offset OUT int4, end_timestamp OUT timestamptz, newest_xmin OUT xid) returns setof record
Returns all of the entries in the server's timestamp to XID mapping. Each entry represents the newest xmin of any snapshot taken in the corresponding minute.