Currentlt, I have an Oracle Database Server (11g) and many differen Java 8 Applications on client computers. These applications mostly use ojdbc7.jar for database query execution.
Now, we are facing an incoming migration to Oracle 18c. We will work on updating dependencies for these applications, to ojdbc8.jar; however I need to know whether this is a blocking point for new version integration.
Will ojdbc7 dependency work with Oracle 18c, albeit, with limited functionality? Or is it absolutely necessary to update dependency BEFORE server migration?
Hope you can shed any light on this.


