PostgreSQL is a popular open-source relational database management system. It typically uses port 5432 by default for incoming connections from client applications. This is the standard port that is used for PostgreSQL, so if you are connecting to a PostgreSQL server, you should specify this port number in your connection settings.
However, it is possible to configure PostgreSQL to use a different port number if needed. This can be useful if you have multiple databases running on the same server and want to avoid port conflicts. To change the port number that PostgreSQL uses, you can edit the postgresql.conf configuration file and modify the port setting. This setting specifies the port number on which the PostgreSQL server listens for incoming connections.
Here is an example of how you might change the port number in the postgresql.conf file:
# The default port number is 5432
port = 5432
# To use a different port number, specify it here
#port = 5433
In this example, the default port number is 5432, but it has been commented out and a different port number (5433) has been specified. To use this new port number, you would need to uncomment the port setting and specify the desired port number. Then, you would need to restart the PostgreSQL server for the changes to take effect.
Once the PostgreSQL server is using the new port number, you would need to specify this port number when connecting to the server from a client application. This would typically be done in the connection settings or connection string, depending on the specific client that you are using.
