First of all, you can use the ODBC connector. But it is fraught with a lot of settings.
As you can see, you need to create the data source and the connection string to it. Relatively a lot of action. An alternative to this method is to use connector from FastReport. In fact there are two connectors to choose from. In FastReport.Net package, the source code is included with various demonstration projects and additions. By additions we understand plug-ins for the report designer, which you can add or remove as needed. We are interested in the plugins folder located in:
С:\Program Files (x86)\FastReports\FastReport.Net\Extras\Connections
There are two projects FastReport.Oracle and FastReport.OracleODP. The first one uses OracleClient library, and the second - Oracle.DataAccess. In practice, the only difference is in one detail. Here is the form for t ...