migration tool

Hello,
I tried to use the migration plug-in to migrate from Oracle to Postgres, but
I failed to connect to the Oracle database. This db is on a server, so
normally I use an IP address to connect to it. In the migration tool, I set
the db type to 'SQL server database'. But then there are only a 'Server
Name' and a 'Database Name' fields. How can I connect to my remote server? I
tried Server Name = myServerName@192.0.32.254 but that didn't work.
What did I miss?

Miguel Juteau