According to PosgreSQL’s documentation : “Write-Ahead Logging (WAL) is a standard method for ensuring data integrity.”. These files are created in a directory at a local or remote server and if you desire to copy them you have to tape library. However, PostgreSQL database isn’t created with the WAL option enabled and to be able to use it you have to configure some essential parameters in the postgresql.conf file. Therefore , these parameters are: archive_command: Here is the directory that you want your WAL files be stored in. You can…