Click on the Oracle option to open the Oracle connection options.

Database	Enter the name of the database. The value may be one of the following: · The server, port, and service descriptor of the database e.g. OraSrv:1521/orcl   · TNS alias name, specifying the database to connect to e.g. OraSrv   · The full connection descriptor, as entered in TNSNames.ora e.g.   (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)(HOST = OraSrv)(PORT = 1521)))(CONNECT_DATA = (SERVER = DEDICATED)(SERVICE_NAME = orcl)))   · The full Oracle connection string e.g. scott/tiger@OraSrv
User name	Enter the name of the database user to connect as.
Password	Enter the password of the database user.

In order to connect to Oracle servers, the Oracle client libraries must be installed. You can use the full client installation set, or the Oracle Instant Client pack. If you are using the Oracle Instant Client pack, the path to the Instant Client folder must be included as part of the system's PATH settings.