IBM data server driver clients and drivers enhancements
Some IBM data server clients and drivers have been enhanced to improve application performance and reliability.
To successfully use version 11.5 Mod Pack 4 features, you must upgrade to a version 11.5 IBM® data server client or driver.
In general, you can use Db2 version 11.5, version 11.1, and version 10.5 clients and drivers for running applications, developing applications, and performing database administration tasks on Db2 version 11.5. Likewise, you can use version 11.5 clients and drivers for running applications, developing applications, and performing administrative tasks on Db2, version 11.1 and version 10.5 servers. However, the functionality available can differ based on the combination of the version levels that are used on the server and client (or driver).