1. Objects, Libraries, and Library Lists
Chapter 4
Objects, Libraries, and Library Lists

2. Understanding AS/400 System Operations
What Is an Object?
An object is anything that exists, occupies storage, and on which operations (commands) can be performed.
Understanding AS/400 System Operations

3. Understanding AS/400 System Operations
Object Structure
Object name, type, owner, library, etc.
Object Header Portion
This could be a files data, program statements, etc.
Function Portion of Object
Figure 4-1:Object Structure
Understanding AS/400 System Operations

4. WRKOBJ Command Understanding AS/400 System Operations
Work with Objects (WRKOBJ)
Type choices, press Enter.
Object Name, generic*, *ALL
Library *LIBL Name, *LIBL, *CURLIB...
Object type *ALL *ALL, *ALRTBL, *AUTL...
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F3=Exit F4=Prompt F5=Refresh F12=Cancel F13=How to use this display F24=More keys
Understanding AS/400 System Operations

5. Understanding AS/400 System Operations
Object Attributes
Name
Type
Owner name
Creation time
Save time
Text description
Library
Attributes
Creation date
Save date
Off-line size
Change date
Understanding AS/400 System Operations

6. EMPPAYLIB Library Contents
EMPMST (*pgm)
EMPMST(*file)
EMPPGM1 (*pgm)
QDDSSRC (*file)
EMPPGM2 (*pgm)
QCBLSRC (*file)
Understanding AS/400 System Operations

7. Understanding AS/400 System Operations
Objects in EMPPAYLIB
Object Type
Object Name
*Pgm
*File
EMPMST 
EMPMST
The same name can be used for different object types. The AS/400 determines which operations can be performed on the object based on its type.
EMPPGM1 
EMPPGM2
All objects of the same type must have different names.
(RPG IV)
*Pgm (CL)
UPDPROG   
These two objects cannot have the same name because they are the same object types. AS/400 does not distinguish between sub-object types.
Understanding AS/400 System Operations

8. Understanding AS/400 System Operations
Library Contents
Understanding AS/400 System Operations

9. Understanding AS/400 System Operations
Object Attributes
Understanding AS/400 System Operations

10. Understanding AS/400 System Operations
Object Definition
Source Code
Compile
CRTPF CRTLF CRTRPGPGM
Etc.
Object Code
Understanding AS/400 System Operations

11. Understanding AS/400 System Operations
Compile Commands
Object Type
Command
Physical File
CRTPF
Logical File
CRTLF
RPG Program (not ILE)
CRTRPGPGM
CLP Program
CRTCLP
Display file
CRTDSPF
ILE RPG Program
CRTBNDRPG
Program
CRTPGM
Understanding AS/400 System Operations

12. Understanding AS/400 System Operations
Example Object Types
(*AUTL)
Authorization List
(*CLS)
Class
(*CMD)
Command
(*CTLD)
Controller Description
(*DEVD)
Device Description
(*DOC)
Document
(*DTAARA)
Data Area
(*DTAQ)
Data Queue
Understanding AS/400 System Operations

13. Understanding AS/400 System Operations
Example Object Types
(*FILE)
FILE
(*FLR)
Folder
(*JOBD)
Job description
(*JOBQ)
Job Queue
(*JRN & *JRNRCV)
Journal and Journal Receiver
(*LIB)
Library
(*LIND)
Line Description
(*MENU)
Menu
Understanding AS/400 System Operations

14. Understanding AS/400 System Operations
Example Object Types
(*MSGF)
Message File
(*MSGQ)
Message Queue
*MODULE
Module (*Module)
(*OUTQ)
Output Queue
(*PGM)
Program
(*PNLGRP)
Panel Group
(*SBSD)
Subsystem Description
(*SRVPGM)
Service Program
(*USRPRF)
User Profile
Understanding AS/400 System Operations

15. Functions Performed on Objects
System Functions
Object type verification:
Object authority verification:
Object lock enforcement:
Object damage detection and notification:
Understanding AS/400 System Operations

16. User Requested Functions on Objects
Specific Functions
Common Functions Apply to All Objects in General
Understanding AS/400 System Operations

17. Managing Objects – Operational Assistant (OA)
SETUP Customize Your System, Users, and Devices
System: BIGBLUE
To select an option, type its number below and press Enter:
1. Change system options
2. Cleanup tasks
3. Power on and off tasks
4. Disk space tasks
5. Backup tasks
10. Work with user enrollment
11. Change passwords for IBM-supplied users
20. Communications configuration tasks
Type a menu option below
___
F1=Help F3=Exit F9=Command line F12=Cancel
Understanding AS/400 System Operations

18. Understanding AS/400 System Operations
Libraries
The basic building block of your work on the AS/400 will be the library. A library, which is itself an object, is a container for objects.
Understanding AS/400 System Operations

19. PAYLIB Directory Structure
Object Name
Object Type
Object Address
Payroll
Paymstr
Paytrans
Payoutq
*PGM
*FILE
*OUTQ
Address
Understanding AS/400 System Operations

20. File Allocation Table (FAT)
Address
Allocation
Address 1
Allocated
Address 2
Free
Address 3
Address 4
Address 5
Understanding AS/400 System Operations

21. IBM Supplied Libraries
QSYS:
Most important library on the AS/400.
Contains OS/400, and master directory of all libraries.
Don’t delete or rename.
Need to operate the system.
Some objects MUST be in QSYS.
User Profiles
Device descriptions
Authorization lists
Library object descriptions
QUSRSYS:
Place user objects, considered more or less “system” objects.
Typically message queues for user profiles.
Understanding AS/400 System Operations

22. IBM Supplied Libraries – Cont.
QHLPSYS:
All help information
Search Index Objects
QGPL:
General Purpose Library.
Contains objects used by the system or users.
Contains job queues, subsystem descriptions, source physical files and output queues.
Don’t store unnecessary objects in QGPL
Do not delete or rename this library.
Understanding AS/400 System Operations

23. IBM Supplied Libraries – Cont.
QSPL:
Spooling library.
Contains several databases files in spooling system.
Used to store reports and printed output waiting to print.
QDOC:
Folders and documents created and maintained in library QDOC.
Use Save Document Library Objects (SAVDLO) and Restore Document Library Objects (RSTDLO).
Understanding AS/400 System Operations

24. IBM Supplied Libraries – Cont.
QTEMP:
Created for every active job automatically.
Lasts only for the duration of the job.
Functions as a “scratch pad”, for temporary objects.
Understanding AS/400 System Operations

25. Understanding AS/400 System Operations
Product Libraries
IBM licensed program products are self-contained software packages. Each comes in a separate library (a product library).
Understanding AS/400 System Operations

26. Creating a Library Understanding AS/400 System Operations
Create Library (CRTLIB)
Type choices, press Enter.
Library Name
Library type *PROD *PROD, *TEST
Text 'description' *BLANK                             
                            
Additional Parameters
Authority *LIBCRTAUT Name, *LIBCRTAUT, *CHANGE...
Auxiliary storage pool ID
Create authority *SYSVAL Name, *SYSVAL, *CHANGE...
Create object auditing *SYSVAL Character value, *SYSVAL...
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F3=Exit F4=Prompt F5=Refresh F12=Cancel F13=How to use this display
F24=More keys
Understanding AS/400 System Operations

27. Working With Libraries
Work with Libraries (WRKLIB)
Type choices, press Enter.
Library *LIBL Name, generic*, *LIBL...
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F3=Exit F4=Prompt F5=Refresh F12=Cancel F13=How to use this display
F24=More keys
Understanding AS/400 System Operations

28. All User Libraries screen
Work with Libraries
Type options, press Enter.
1=Create 2=Change 3=Copy 4=Delete 5=Display 6=Print
8=Display library description 9=Save =Restore
11=Save changed objects =Work with objects 14=Clear
Opt Library Attribute Text
#LIBRARY PROD
ADA0268LIB PROD this is Sung'library.
ADA3574LIB PROD
AGE1278LIB PROD Cindy's programmer's library
ALEX PROD
AND2554LIB PROD
AND554LIB PROD
ANJ2529LIB PROD Rob Anjema library
APPDTA PROD COLLECTION - created by SQL
More...
Parameters for options 1, 2, 3, 5, 8, 9, 10, 11 and 12 or command
===>                                                                         
F3=Exit F4=Prompt F5=Refresh F9=Retrieve F11=Display names only
F12=Cancel F16=Repeat position to F17=Position to
Understanding AS/400 System Operations

29. Understanding AS/400 System Operations
Objects in a Library
Work with Objects
Type options, press Enter.
2=Edit authority =Copy 4=Delete 5=Display authority 7=Rename
8=Display description 13=Change description
Opt Object Type Library Attribute Text
AGTMSTDFU *PGM ANJ2529LIB DFU AGTMSTDFU
AGTSLSDFU *PGM ANJ2529LIB DFU AGTSLSDFU
ASSIGNNODO *PGM ANJ2529LIB CLP Assignment 3: changed with
ASSIGN3 *PGM ANJ2529LIB CLP Assignment 3: Menu
BRKMSTDFU *PGM ANJ2529LIB DFU BRKMSTDFU
CH11EX2 *PGM ANJ2529LIB RPGLE Chapter 11, Assignment 2
CH12Q *PGM ANJ2529LIB RPGLE Chapter 12, Assignment 1
CH12Q1DFU *PGM ANJ2529LIB DFU CH12Q1DFU
CH12Q1X *PGM ANJ2529LIB RPGLE Chapter 12, Assignment 1
CH13Q1RPG *PGM ANJ2529LIB RPGLE Chapter 13, Assignment 1
CH13Q2RPG *PGM ANJ2529LIB RPGLE Chapter 13, Assignment 2
More...
Parameters for options 5, 7 and 13 or command
===>                                                                          
F3=Exit F4=Prompt F5=Refresh F9=Retrieve F11=Display names and types
F12=Cancel F16=Repeat position to F17=Position to
Understanding AS/400 System Operations

30. Understanding AS/400 System Operations
Library List
List of system, product, and user libraries.
Library list give the default list of libraries to be searched for an object.
Every job has a library list.
Library list has a maximum of 40 names.
Scanned from top to bottom.
Understanding AS/400 System Operations

31. Understanding AS/400 System Operations
Library List Sections
Portion
Values/Command
Contents
System Library
QSYSLIBL
QSYS 1-15 libraries
Product Library
Optional
Current Library
CHGCURLIB
From User Profile
User Library
QUSRLIBL
QTEMP
1-25 Libraries
Understanding AS/400 System Operations

32. Commands for Library List
Commands that affect user portion of library list
ADDLIBLE
RMVLIBLE
EDTLIBLE
Understanding AS/400 System Operations

33. Understanding AS/400 System Operations
Display a Library List
Display Library List
System: BIGBLUE
Type options, press Enter.
5=Display objects in library
Opt Library Type Text
QSYS SYS System Library
QSYS SYS System Library for CPI's
QHLPSYS SYS
QUSRSYS SYS
OPR CUR Operations Marge Hohly
COMMONLIB USR
QGPL USR
QTEMP USR
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(C) COPYRIGHT IBM CORP. 1980, 1998.
Understanding AS/400 System Operations