Invalid Oracle URL specified: OracleDataSource.makeURL

Question

I'm trying to connect to a local oracle database but I'm getting this cryptic error message: Invalid Oracle URL specified: OracleDataSource.makeURL.

I'm pretty sure this is due to an error with the database connection parameters I'm passing, but really, this error message does not help me in any way. Any hints as to what I'm doing wrong would be greatly appreciated.

FYI: Code used to connect is below, except for the hardcoded strings this is what is used on our production environment and does work there.

OracleDataSource dataSource = new OracleDataSource();
 dataSource.setServerName("localhost");
 dataSource.setUser(userName);
 dataSource.setPassword(password);
 dataSource.setDatabaseName("orcl");
return dataSource.getConnection();

Answer 1

Suprsingly, after adding the following two lines to the code which created the connection, it worked.

dataSource.setPortNumber(1521);
dataSource.setDriverType("thin");

I don't understand why we did not have that problem before, but that may have something to do with my local install. My biggest beef is with the error message not giving any detail about what is wrong though.