Impact of Changing the JDBC driver on Java based application

What can be the testing areas for java based application IF JDBC driver is changed for the application.
I.e Driver class is changed from 'oracle.jdbc.driver.OracleDriver' To 'oracle.jdbc.OracleDriver', What testing areas should be targeted?

By initial search i found that one of the areas is 'Application Performance'.

It would be great if someone shares their knowledge for the same.

Thanks