Connect Oracle times Wrong ora-12541:tns: no listener

2. Open "Oracle Net configuration Assistance" from the Start menu, select "Listener Configuration", as shown in, click Next.

4. Select reconfigure, as shown, and click Next.

6. Select the listener, as shown in, select Protocol, general default is OK, click Next.

8. Select the port number, as shown in, and click Next.

10. Select "No", as shown, and click Next.

12. The listener configuration is complete, as shown in, click Next.

14. Select "Local Network Service name Configuration", as shown in, click Next.

16. Select reconfigure, as shown, and click Next.

18. "Network Service Name" Select your own database name , as shown in, click Next.

20. Fill in the "Service name", in fact, you create the database when the full database name, as shown, click Next.

22. Select protocol, default to "TCP", as shown in, click Next.

24. Fill in the "hostname", either your IP address or your hostname; Select the port number, as shown, and click Next.

26. Select "Yes, Test" as shown in, click Next.

28. Select "Change Login", fill in "username" and "password", click "OK" to show "Connecting ... The test was successful. ", click Next.

30. Fill in the "Network Service name", is your own database name, the small part is "Zboracle", click Next. "Do you want to configure another service name?" "Select" No "and click Next to finish.

32. Start PL/SQL Developer, enter the username and password to log in successfully, as shown in.

Connect Oracle times Wrong ora-12541:tns: no listener