port numbers and IP Address

[Gangireddy Danam]

How to find particular port number is utilizing or not ..?
I had changed Oracle 10gXE port number from 8080 to 2020.
How to find oracle related services are running with this port number ?
..ThankYou

[Rajdeep Biswas]

In Unix,
netstat | grep <port_no>
e.g. netstat | grep 2020
netstat -a lists all the ports
For more options, type
man netstat

In Windows,
netstat gives all the ports in use.
To find a specific port, say 2020, use
netstat | find "2020"

[Peter Johnson]

On Windows, you might also look into tcpview from sysinternals.