min_wal_size

A GUC parameter determining the minimum number of WAL files to retain for reuse at a future checkpoint

min_wal_size is a GUC parameter determining the minimum number of WAL files to retain for reuse at a future checkpoint.

min_wal_size was introduced in PostgreSQL 9.5; together with max_wal_size it replaces checkpoint_segments.

Default

Default value for min_wal_size is 80MB.

Change history

Categories

GUC configuration item, WAL

See also

max_wal_size, wal_keep_size, max_slot_wal_keep_size