PostgreSQL version 9.2 generates write ahead log (WAL) every second i.e. 60 WALs are generated in one minute.
Is it possible to make them occur less frequently?
Is it possible to increase the WAL file size, so that fewer WALs will be generated in one minute?
Best Answer
Start with the manual page on Write Ahead Log
Other options on that page can also have an effect. Also consider that many small writes can easily be maintained but one big write can cause delays and increase the data lost if the power goes out.