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Licensed Internal Code information and PTFs, and display free space. Select this
option from the Use Dedicated Service Tools (DST) display. For more information
on Licensed Internal Code fixes and PTFs, see “Licensed Internal Code (LIC)
introduction” on page 223 and the system operation information.
Licensed Internal Code general information
There can be two versions of some Licensed Internal Code modules on the
load-source disk unit. The IPL type (A or B) determines which version of the
modules your system uses. When the system is running on a type A IPL, it uses
the original, permanent version. When a Licensed Internal Code fix (or program
temporary fix (PTF)) is temporarily applied, the system creates a second version of
the module. The system uses this second version when it is running on a type B
IPL.
When the PTF is permanently applied, the side B of the LIC replaces the original
side A version of the LIC module. The system will then use the PTF version of the
LIC module (which is now permanent) when running on a type A IPL.
For PTFs to be activated on each partition, they must be separately applied to each
partition.
To apply a PTF that currently has an earlier version applied temporarily on the
system, be sure you IPL the system from the B side (type B IPL). Then load and
apply the PTF. The existing temporarily applied PTF automatically becomes
permanent as the new PTF is loaded. If you do not want the existing temporarily
applied PTF to become permanent, remove it manually (see the system operation
information).
If you perform the IPL on the B side when you apply PTFs to Licensed Internal
Code, the system applies the PTFs to the active copy of the Licensed Internal Code.
To run the system with the PTFs, you must perform an IPL. For normal operations
use type B IPL. Use type A IPL when the B side is not available or when you want
to remove a PTF.
Note: During and install or upgrade a type A IPL will also be used.
Options and function keys
v Apply fixes
This option places the fixes into the Licensed Internal Code from removable
media. These PTFs are placed in the inactive (change) copy of the Licensed
Internal Code.
Load-Source Disk Unit
B=Temporary
A=Permanent
PTF
Temporary
IPL type A uses
this Licensed
Internal Code
IPL type B uses
this Licensed
Internal Code
RV3B159-0
Figure 1. Copies of load-source Licensed Internal Code
12 Service Functions V5R2