For formatted documentation, please see https://www.postgresql.org/docs/16/oldsnapshot.html.
#[1]F.23. ltree -- hierarchical tree-like data type
[2]F.25. pageinspect -- low-level inspection of database pages
F.24. old_snapshot -- inspect old_snapshot_threshold state
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F.24. old_snapshot -- inspect old_snapshot_threshold state [7]#
[8]F.24.1. Functions
The old_snapshot module allows inspection of the server state that is
used to implement [9]old_snapshot_threshold.
F.24.1. Functions [10]#
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.
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F.25. pageinspect -- low-level inspection of database pages