Nov 13, 2025 · If archive_command is an empty string (the default) while archive_mode is enabled (and archive_library is set to an empty string), WAL archiving is temporarily disabled, …

Level replica is required for binary replication, and level logical is required for logical replication. This is a setting because raising the level adds more writes to the WAL, so if you’re not doing …

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 …

WAL is automatically enabled; no action is required from the administrator except ensuring that the disk-space requirements for the WAL logs are met, and that any necessary tuning is done …

The default value is minimal, which writes only the information needed to recover from a crash or immediate shutdown. archive adds logging required for WAL archiving, and hot_standby …

Postgres Parameter across Versions Select a parameter to view the defaults across versions of PostgreSQL.

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 …

If you use streaming replication without file-based continuous archiving, you have to set wal_keep_segments in the master to a value high enough to ensure that old WAL segments …

Nov 13, 2025 · Briefly, WAL 's central concept is that changes to data files (where tables and indexes reside) must be written only after those changes have been logged, that is, after WAL …

Nov 13, 2025 · WAL is automatically enabled; no action is required from the administrator except ensuring that the disk-space requirements for the WAL files are met, and that any necessary …