PostgreSQL 11 Administration Cookbook
by Simon Riggs, Gianni Ciolli, Sudheer Kumar Meesala, Sheldon Strauch
How to do it…
Your first thought is probably to look in postgresql.conf, which is the configuration file, and is described in detail in the Updating the parameter file recipe. That works, but only as long as there is only one parameter file. If there are two, then maybe you're reading the wrong file! How would you know? So, the cautious and accurate way is to not trust a text file, but to trust the server itself.
Moreover, you learned in the previous recipe, Changing parameters in your programs, that each parameter has a scope that determines when it can be set. Some parameters can be set through postgresql.conf, but others can be changed afterwards. So, the current values of the configuration settings may have been subsequently changed. ...
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