./pg_controldata /var/lib/postgresql/9.6/main
pg_control version number:            960
Catalog version number:               201608131
Database system identifier:           6901965895850147745
Database cluster state:               in production
pg_control last modified:             Thu 03 Dec 2020 10:11:21 GMT
Latest checkpoint location:           19E/260700C0
Prior checkpoint location:            19E/2606FFC8
Latest checkpoint's REDO location:    19E/26070088
Latest checkpoint's REDO WAL file:    000000010000019E00000026
Latest checkpoint's TimeLineID:       1
Latest checkpoint's PrevTimeLineID:   1
Latest checkpoint's full_page_writes: on
Latest checkpoint's NextXID:          0:421007004
Latest checkpoint's NextOID:          31273359
Latest checkpoint's NextMultiXactId:  2294
Latest checkpoint's NextMultiOffset:  4804
Latest checkpoint's oldestXID:        229505562
Latest checkpoint's oldestXID's DB:   16393
Latest checkpoint's oldestActiveXID:  421007004
Latest checkpoint's oldestMultiXid:   1
Latest checkpoint's oldestMulti's DB: 16394
Latest checkpoint's oldestCommitTsXid:421005911
Latest checkpoint's newestCommitTsXid:421007003
Time of latest checkpoint:            Thu 03 Dec 2020 10:11:21 GMT
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:              1800
max_worker_processes setting:         8
max_prepared_xacts setting:           0
max_locks_per_xact setting:           64
track_commit_timestamp setting:       on
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