wal_level: Default: replica, Values: [minimal,replica,logical], Context: postmaster, Needs restart: true • Sets the level of information written to the WAL.

Nov 13, 2025 · There are several WAL -related configuration parameters that affect database performance. This section explains their use. Consult Chapter 19 for general information about …

Feb 11, 2025 · There are three wal_level settings available: ‘minimal’, ‘replica’, and ‘logical’. The ‘minimal’ setting logs only the information necessary to recover from a crash or an immediate …

The default value is replica, which writes enough data to support WAL archiving and replication, including running read-only queries on a standby server. minimal removes all logging except …

wal_level is a configuration parameter determining the level of detail written to WAL. wal_level was added in PostgreSQL 9.0. The default value for wal_level is: wal_level can only be changed …

Two PostgreSQL configuration settings that are associated with Write-Ahead Logging (WAL) and data durability are wal_level and archive_mode. This is an in-depth explanation:

wal_level controls the amount of information that is written to the Write-Ahead Log (WAL). Think of the WAL as a detailed journal of every change made to your database.

wal_level is a parameter in PostgreSQL that determines the level of information written to the Write-Ahead Logging (WAL) files. WAL is a crucial component of PostgreSQL that ensures …

Oct 9, 2025 · Once a checkpoint occurs, PostgreSQL determines how many WAL segment files need to be retained. It bases this estimation on the number of files consumed in previous …

ALTER SYSTEM writes the given parameter setting to the postgresql.auto.conf file, which is read in addition to postgresql.conf. Setting a parameter to DEFAULT, or using the RESET variant, …