Connecting to Oracle across the Internet

[Greg Kearn]

Hi,
When I'm in building A my software allows me connect to an Oracle db on the intranet. When I'm in building B trying to access the same Oracle db across Internet (no firewalls at either end) the connection fails, with a message of: SQLException: The Network Adapter could not establish the connection. What is the magic to connect across the Internet to an Oracle db?
Thanks Greg
code snip...
String driver="oracle.jdbc.driver.OracleDriver";
String url="jdbc racle:thin:SUPER/user@199.199.9.99:1521:sid";
DriverManager.registerDriver (new oracle.jdbc.driver.OracleDriver());
Connection conn = DriverManager.getConnection(url);
...