...
If you are using the default version, you will be impacted. The impact may be minimal if you utilize the latest driver or a higher version than 19c.
To check the version of the current JAR file that you are using, refer to https://www.oracle.com/database/technologies/appdev/jdbc-drivers-archive.html.
To know the JAR file that is in use, follow these steps:
Open the JAR file using a ZIP utility or a JAR viewer tool.
Look for the
META-INF/MANIFEST.MFfile within the JAR and check the version.
Do I need to reconfigure my accounts?
...
Use the OJDBC6 JAR from the 11.2.0.4 version to maintain the same behavior as before the driver upgrade.
...