Hi, I have installed oracle 11g in Red Hat Enterprice Linux 5 (32 bit) ,
I have installed the sqldeveloper which is provided by the oracle software
The Gui pop has came , then in username:scott , password:scott , role:default ,connection type:basic, hostname:localhost , port:1522,sid:ORCL
After providing this , then clicked on test.. It gave the network adaptor could not establish the connection.