ORA-12505, TNS:listener does not currently know of SID given in connect des

Question

Please kindly help me as I just installed Oracle 11g but cannot connnect using SQL Devloper using the settings below:

Username: system

Password: mypassword

Answer 1

1. Open Net Manager. In Oracle Net Configuration, open Local, and then, open Listeners.
2. Select your Listener.
3. In the upper right ComboBox, select Database Services.
4. Clic Add Database.
5. Fill the 3 fields: Global Database Name (i.e. ORCL.NET. In SQL Plus type SELECT * FROM GLOBAL_NAME), Oracle Home Directory (i.e. C:\app\User\product\11.2.0\dbhome_1) and SID (i.e. orcl)
6. File > Save Network Configuration.
7. Restart the OracleOraDb11g_home1TNSListener service.