| Type: | integer |
| Default: | 3 |
| Min: | 1 |
| Max: | 2147483647 |
| Context: | sighup |
| Restart: | false |
| Deprecated: | 9.4 |
Maximum number of log file segments between automatic WAL checkpoints (each segment is normally 16 megabytes). The default is three segments. Increasing this parameter can increase the amount of time needed for crash recovery. This parameter can only be set in the postgresql.conf file or on the server command line.