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

For SQL Developer maybe you need to add these parameters

AddVMOption -Duser.language=en

AddVMOption -Duser.region=US

in the file

$SQLDEVELOPER_HOME\sqldeveloper\bin\sqldeveloper.conf