PostgreSQL: Documentation: 18: 19.5. Write Ahead Log
Nov 13, 2025 · 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 …
PostgreSQL Documentation: wal_level parameter
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 …
PostgreSQL : Documentation: 9.5: 18.5. Write Ahead Log
Specifies whether transaction commit will wait for WAL records to be written to disk before the command returns a “success” indication to the client. Valid values are on, remote_write, local, …
wal_level - pgPedia - a PostgreSQL Encyclopedia
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 …
PostgreSQL: Documentation: 18: 28.5. WAL Configuration
Nov 13, 2025 · With the default value of 0.9, PostgreSQL can be expected to complete each checkpoint a bit before the next scheduled checkpoint (at around 90% of the last checkpoint's …
PostgreSQL : Documentation: 9.5: 29.4. WAL Configuration
The default settings are 5 minutes and 1 GB, respectively. If no WAL has been written since the previous checkpoint, new checkpoints will be skipped even if checkpoint_timeout has passed.
PostgreSQL: Documentation: 18: 19.6. Replication
Nov 13, 2025 · Specifies the maximum number of concurrent connections from standby servers or streaming base backup clients (i.e., the maximum number of simultaneously running WAL …
PostgreSQL: Documentation: 18: 28.3. Write-Ahead Logging (WAL)
Nov 13, 2025 · Using WAL results in a significantly reduced number of disk writes, because only the WAL file needs to be flushed to disk to guarantee that a transaction is committed, rather …
Changing "wal_level" on PostgreSQL 13 (via client session) is …
May 11, 2021 · 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 …
Server Configuration: Write Ahead Log - PostgreSQL 9.5 …
wal_level determines how much information is written to the WAL. The default value is minimal, which writes only the information needed to recover from a crash or immediate shutdown. …