sqlplus remote connection giving ORA-21561

If you are using Mac add local computer name to your 127.0.0.1 in /etc/hosts

It will be like

127.0.0.1       localhost <local_computer_name>

Way to find local computer name

System Preferences>Sharing(search for it if you cant find) on the top you can see your local computer name

or you can use "hostname" command to get local computer name

Append the name of your server to the hosts file.

If your /etc/hosts file looks like this:

127.0.0.1   localhost localhost.localdomain

It should be changed to:

127.0.0.1   localhost localhost.localdomain hostname

hostname can be obtained from the command "hostname".

Related