JDBC (Java Database Connectivity) is a programming interface that lets Java applications access a relational database.
SuperCHANNEL needs a JDBC driver so that it can access the relational database system (e.g. SQL Server, Oracle, etc) where your source data is stored.
Before you can run SuperCHANNEL, you need to install the appropriate JDBC driver and configure SuperCHANNEL so that it can access the driver.
In most cases the JDBC drivers are supplied by the database vendors; they are not supplied with SuperCHANNEL.
Follow the instructions relevant to your relational database system: