PostgreSQL Узнать дату и время последнего CHECKPOINT

В PostgreSQL узнать дату и время последнего CHECKPOINT можно выполнив на сервере команду:

pg_controldata /path/to/pgdata

Например:

/usr/pgsql-9.6/bin/pg_controldata /var/lib/pgsql/9.6/data/

Ответ будет вида:

pg_control version number:            960
Catalog version number:               201608131
Database system identifier:           6522699450602703438
Database cluster state:               in production
pg_control last modified:             Tue 04 Sep 2018 10:40:05 AM MSK
Latest checkpoint location:           1/16315950
Prior checkpoint location:            1/1630E4E0
Latest checkpoint's REDO location:    1/16314968
Latest checkpoint's REDO WAL file:    000000010000000100000016
Latest checkpoint's TimeLineID:       1
Latest checkpoint's PrevTimeLineID:   1
Latest checkpoint's full_page_writes: on
Latest checkpoint's NextXID:          0:2535686
Latest checkpoint's NextOID:          49176
Latest checkpoint's NextMultiXactId:  108
Latest checkpoint's NextMultiOffset:  222
Latest checkpoint's oldestXID:        1750
Latest checkpoint's oldestXID's DB:   1
Latest checkpoint's oldestActiveXID:  2535686
Latest checkpoint's oldestMultiXid:   1
Latest checkpoint's oldestMulti's DB: 1
Latest checkpoint's oldestCommitTsXid:0
Latest checkpoint's newestCommitTsXid:0
Time of latest checkpoint:            Tue 04 Sep 2018 10:40:04 AM MSK
Fake LSN counter for unlogged rels:   0/1
Minimum recovery ending location:     0/0
Min recovery ending loc's timeline:   0
Backup start location:                0/0
Backup end location:                  0/0
End-of-backup record required:        no
wal_level setting:                    replica
wal_log_hints setting:                on
max_connections setting:              200
max_worker_processes setting:         8
max_prepared_xacts setting:           0
max_locks_per_xact setting:           64
track_commit_timestamp setting:       off
Maximum data alignment:               8
Database block size:                  8192
Blocks per segment of large relation: 131072
WAL block size:                       8192
Bytes per WAL segment:                16777216
Maximum length of identifiers:        64
Maximum columns in an index:          32
Maximum size of a TOAST chunk:        1996
Size of a large-object chunk:         2048
Date/time type storage:               64-bit integers
Float4 argument passing:              by value
Float8 argument passing:              by value
Data page checksum version:           0

Нас интересует пункт Time of latest checkpoint.

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