The section [Supported JDBC Data Sources](https://community.denodo.com/docs/html/browse/6.0/vdp/administration/appendix/supported_jdbc_data_sources/supported_jdbc_data_sources#supported-jdbc-data-sources) of the Virtual DataPort Administration Guide lists the JDBC drivers provided by Virtual DataPort.
PostgreSQL 9 and Oracle 11g drivers are included by default in the installation of the Denodo Platform. In these cases there is no need to change the driver parameters of the data source configuration that Denodo fill by default. If I were you I would reselect the databases in the Database adapter field to refill automatically those parameters with the right values.
Hope this helps!