In this post, I am sharing a PostgreSQL DBA Function for reloading the Server Configuration flies like postgresql.conf.

Even for small config change, people are restarting the whole server which is not good for existing connections.

And even, all parameters don’t require the restart of the server. You can find this information like which parameter needs config reload in the wiki of PostgreSQL.

So before taking any action, please check the official page.
Now, without restarting the server, you can still reload the configuration files of the PostgreSQL Server.

Use below DBA Function, for reloading the Server Configuration files:

select pg_reload_conf();

In this post, I am sharing a simple SHOW ALL command which we can use for getting the list of the defined configuration of PostgreSQL Server.

It shows the settings from the postgresql.conf file which is important for all kind of troubleshooting.

Using SHOW ALL command, you can also search particular setting by name also. For the troubleshooting, we should use this command which is safe than opening a postgresql.conf file for troubleshooting.

Check the particular setting:

show shared_buffers;

shared_buffers
-----------------
     128MB

Check all settings:

show all;

In this post, I am sharing an important topic for PostgreSQL Database Professional.

A database log is necessary for finding different statuses, errors, bad queries and any changes on the Database Server.
A Database Administrator can also log different executed queries and analyze those for performance tuning.

Following are few relevant parameters for enabling the PostgreSQL log for all the queries.

Please open your postgresql.conf file and make sure about all logs related parameter’s value which are mentioned below.

• log_directory = ‘pg_log’ (default directory name)
• log_filename = ‘postgresql-%Y-%m-%d_%H%M%S.log’ (default file name structure)
• log_statement = ‘all’ (value ‘all’ is recommended {none, ddl, mod, all})
• logging_collector = ON
• log_line_prefix = ‘%t %c %u ‘ (time, sessionid, user)
• log_destination = ON (stderr,syslog,csvlog,eventlog)
• log_rotation_size = 15MB
• log_rotation_age = 1d (create new log file every day)