Hello,
in the Oracle documentation it is mentioned that for the thin driver you can set these settings via JDBC parameters. In KNIME you can specify these parameters via the JDBC Parameters tab.
Oracle wallet properties can be set via JDBC parameters as well if you are using the thin client.
In order to use Oracle wallet please see my following comment regarding the driver registration and the bug that will be fixed with the next release which will be published very soon.
Bye
Tobias