IBM SY44-5902-05 manual Licensed Internal Code general information, Options and function keys

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.

Load-Source Disk Unit
	IPL type A uses
A=Permanent	this Licensed
	Internal Code
PTF	IPL type B uses
Temporary
B=Temporary	this Licensed
	Internal Code
	RV3B159-0

Figure 1. Copies of load-source Licensed Internal Code

Options and function keys

vApply 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.

12Service Functions V5R2