How can you check the Oracle port number in Linux?

You can use one of the following methods to check the port number of the Oracle database:

1. Check all the listening port numbers using the netstat command.

netstat -tuln

This will list all the listening port numbers and their corresponding services, where you can find the port number for the Oracle database.

1. Check the port number in the Oracle listener configuration file:
   The Oracle database listener typically listens on a fixed port number, and you can verify the port number by checking the listener configuration file. The listener configuration file is usually named listener.ora and can be found in the Oracle installation directory.
2. To view the port number, use Oracle Net Manager. It is a graphical tool used to check the listener configuration and port number of an Oracle database. Locate and run this tool in the Oracle installation directory to view the port number.

The first method is the most direct and common way to view the port number of an Oracle database.