LIC PTF Apply and System Availability

To apply LIC PTFs, the system must be able to access the A-side. If the system IPLs from the B-side, a message appears indicating the wrong copy of LIC is in use. To apply LIC PTFs, we recommend that you use the following command:

PWRDWNSYS OPTION(*IMMED) RESTART(*YES) IPLSRC(B)

This command performs an IPL to the A side to apply the LIC PTFs and then to the B side to apply the rest of the PTFs. Since the Job Scheduler can only perform IPLs on the B-side, LIC PTFs are not applied. If these LIC PTFs are the prerequisite of any OS/400 licensed program PTFs, the latter is not applied.

To increase the number of immediate PTFs for LIC, the apply procedure for nucleus modules was changed to fixes for nucleus modules beginning with V4R2.

Space usage allows more PTFs to be built for an immediate apply. Changing the apply process for nucleus modules and minimizing the space usage enable the building of more PTFs as immediate, thus shortening or completely removing downtime caused by IPLs required to apply fixes.