How to create a new network service when Easy Config cannot be started

Create | network
If you find that easy Config does not start, and the original network service is working properly, you can create, modify, and delete network services in the following ways.
1 Create (Add a new network service)
Under your Oracle installation directory. \oracle\ora81\network\admin find Tnsnames.ora, open with Notepad or another text editor, and you will see the following
# E:\ORACLE\ORA81\NETWORK\ADMIN\TNSNAMES. ORA Configuration File:e:\oracle\ora81\network\admin\tnsnames.ora
# generated by Oracle Net8 Assistant

Oraclewyq =
(DESCRIPTION =
(Address_list =
(address = (PROTOCOL = TCP) (HOST = 1.1.1.19) (PORT = 1521))
)
(Connect_data =
(service_name = Oracle)
)
)

You can add the following paragraph below
ORACLE =
(DESCRIPTION =
(Address_list =
(address = (PROTOCOL = TCP) (HOST = S11) (PORT = 1521))
)
(Connect_data =
(service_name = Oracle)
)
)


2 Modify, delete or process the same file, as to how to do everyone should be clear?