This information refers to the migration information in your DB2 for Windows Quick Beginnings book.
If you are upgrading a previous version of DB2 that is running on your Windows machine, the installation program provides a warning containing a list of processes that are holding DB2 DLLs in memory. At this point, you have the option to manually stop the processes that appear in that list, or you can let the installation program shut down these processes automatically. It is recommended that you manually stop all DB2 processes before installing to avoid loss of data. The best way to ensure that DB2 processes are not running is to view your system's processes through the Windows Services panel. In the Windows Services panel, ensure that there are no DB2 services, OLAP services, or Data warehouse services running.