Start dedicated service tools (DST) on the primary partition with
all secondary partitions active. Sign on to DST.
Note: To use dedicated
service tools, you need a valid service tools user ID. A manual IPL is not
required to start DST. The following steps can be performed by accessing DST
by using function 21 from the system control panel.
From DST select option 11 (Work with System Partitions) and press
Enter. The Work with System Partitions display appears.
From the primary partition's console select option 4 (Recover configuration
data).