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 few important and basic commands for Database Administrator of PostgreSQL.

Check the version of PostgreSQL:

SELECT version();

Create a database using the script:

CREATE DATABASE Database_Name WITH OWNER User_Name;

Change the owner of the database:

ALTER DATABASE Database_Name OWNER TO User_Name;

Create a full copy of the database with structure and data:

CREATE DATABASE NewDB WITH TEMPLATE OldDB;

Create a database User using the script:

CREATE USER Anvesh WITH password 'testPassword';

Change the password of the User:

ALTER USER postgres WITH PASSWORD 'temproot';

Upgrade the existing User to Superuser:

ALTER USER TestUser WITH SUPERUSER;

Reload the PostgreSQL configuration file:

SELECT  pg_reload_conf();

Rotate the PostgreSQL Log file:

SELECT pg_rotate_logfile();

Find the Postgres server start time:

SELECT pg_postmaster_start_time();