IBM SY44-5902-05 Licensed Internal Code LIC introduction, Fixes and cumulative PTF packages

Chapter 8. Licensed Internal Code

Licensed Internal Code (LIC) introduction . .	.	. 223		Overview of Licensed Internal Code Install and
Fixes and cumulative PTF packages . . . .	.	.	223	Restore	. 225
Cumulative PTF packages	.	.	224	Utility to install Licensed Internal Code . .	. 226
PSP listings	.	.	224	Introduction . . . . . . . . . . . . 226
Licensed programs	.	.	224	Installing Licensed Internal Code . . . .	. 226
Displaying Licensed Internal Code fixes . .	.	. 224		Utility to restore Licensed Internal Code . .	. 227
Code naming conventions	.	.	225	Introduction . . . . . . . . . . . . 227
Utilities to Install and Restore Licensed Internal				Restoring Licensed Internal Code. . . .	. 227
Code	.	.	225	Authorized Program Analysis Report (APAR) .	. 228
Introduction	.	.	225

Licensed Internal Code (LIC) introduction

The OS/400 operating system is under the control of hardware and software.

These controlling parts consist of the following:

vOperating system program

vLicensed Internal Code (system)

vLicensed Internal Code (service processor)

vLicensed Internal Code (I/O processor)

vHardware

Licensed Internal Code controls the system software and hardware. The Licensed Internal Code and the software licensed programs are packaged together and delivered on the same removable media. The operating system provides one interface to the customer for handling all the code on the system.

Fixes and cumulative PTF packages

Between code releases, problems that are found with the code are fixed with program temporary fixes (PTFs). The term PTF can refer to a Licensed Internal Code, an operating system, or other IBM licensed program fix. Because some PTFs repair problems that might appear to be hardware failures, your actions with PTFs are important for both the customer and for IBM. It is often difficult to tell the difference between a real hardware failure and a code problem that is fixed by a PTF.

The customer is responsible for maintaining fixes to Licensed Internal Code and the operating system.

To display the Licensed Internal Code fixes that are on your system, see

“Displaying Licensed Internal Code fixes” on page 224. To display the operating system fixes and cumulative PTF packages that are on your system, see “Displaying OS/400 PTFs” on page 293.

Some PTFs fix problems that might appear to be hardware failures. Always ensure that the recommended PTFs are applied before you exchange hardware.

The cumulative PTF packages contain the majority of the PTFs that were available approximately one month before the package date. Additional PTFs (those that have special instructions, or are not requested often) are available through the IBM support center.

© Copyright IBM Corp. 1997, 2002 223