Working with critical system values before you install software

System values are IBM-supplied objects that can be modified from their shipped value to tailor certain aspects of the IBM® i operating system to your environment. The software installation program will overlay these objects on your system with values that are supplied on the installation media.

If you have modified any of your system values, record and print these system values before you upgrade. Be sure to check the QSYSLIBL, QUSRLIBL, QALWOBJRST, and QVFYOBJRST system values.

If you are upgrading a system that observes a non-Gregorian calendar, IBM recommends that you set the Year offset value.