connect to HANA Database via ODBC

Hello,

I'm currently facing a problem when connecting to HANA database via ODBC. It works properly when I omit Parameter "DATABASENAME". But when I try to Connect using this Parameter, I always receive a "General error; 2 General error: database '<dbname>' does not exist. I've alread read about a similar problem, where incorrect port-no. seemed to cause the Problem. Well, I'm connecting to a multi-tenant DB and use 30015 as port-no. How can I retrieve proper port?