Open the server-instance/config/server.xml file of the web server instance. Add the location of the PointBase driver in the classpathsuffix.
You can find the JDBC driver under < pointbase_install_dir>/lib/.
The driver is named pbclientnn .jar where nn represents the version of PointBase.
Restart the web server to make the server aware of the driver.
Alternatively, you can specify the location of the PointBase driver in the Classpath Suffix field in configuration of the Web Server:
Check Java tab of the Web Server instance -> Java Path Settings page to make this change.
If a PointBase JDBC driver is already configured in the Classpath Suffix field, replace it with the path to the newly installed driver.
Once you have changed the Classpath Suffix field, apply the changes and restart the web server instance.