After taking a look at some basic settings, it is time to decide what to log. By default, only errors will be logged. However, this might not be enough. In this section, you will learn what can be logged and what a logline will look like.
By default, PostgreSQL does not log information about checkpoints. The following setting is here to change exactly that:
#log_checkpoints = off
The same applies to connections; whenever a connection is established or properly destroyed, PostgreSQL can create log entries:
#log_connections = off#log_disconnections = off
In most cases, it does not make sense to log connections as extensive logging significantly slows down the systems. Analytical systems won't suffer much. However, ...
