pg_stat_wal
A statistics view showing information about WAL activity
This entry relates to a PostgreSQL feature which is part of PostgreSQL 14, due to be released in late 2021.
pg_stat_wal is a statistics view showing information about WAL activity.
pg_stat_wal was added in PostgreSQL 14.
Definition by PostgreSQL version
pg_stat_wal (PostgreSQL 15)
View "pg_catalog.pg_stat_wal"
Column | Type | Collation | Nullable | Default
------------------+--------------------------+-----------+----------+---------
wal_records | bigint | | |
wal_fpi | bigint | | |
wal_bytes | numeric | | |
wal_buffers_full | bigint | | |
wal_write | bigint | | |
wal_sync | bigint | | |
wal_write_time | double precision | | |
wal_sync_time | double precision | | |
stats_reset | timestamp with time zone | | |
Documentation: pg_stat_wal
pg_stat_wal (PostgreSQL 14)
View "pg_catalog.pg_stat_wal"
Column | Type | Collation | Nullable | Default
------------------+--------------------------+-----------+----------+---------
wal_records | bigint | | |
wal_fpi | bigint | | |
wal_bytes | numeric | | |
wal_buffers_full | bigint | | |
wal_write | bigint | | |
wal_sync | bigint | | |
wal_write_time | double precision | | |
wal_sync_time | double precision | | |
stats_reset | timestamp with time zone | | |
Documentation: pg_stat_wal
Change history
- PostgreSQL 14
- added (initial commit 8d9a9359)
Examples
postgres=# SELECT * FROM pg_stat_wal\gx -[ RECORD 1 ]----+------------------------------ wal_records | 1387 wal_fpi | 110 wal_bytes | 659600 wal_buffers_full | 0 wal_write | 14 wal_sync | 0 wal_write_time | 0 wal_sync_time | 0 stats_reset | 2021-03-09 10:06:01.842869+01
References
- PostgreSQL 14 documentation: pg_stat_wal
Useful links
Categories
See also
wal_buffers, track_wal_io_timing