IAMZAPOP overview and JCL

You can use the Global Option Change Facility program (IAMZAPOP) perform the following actions:

  • Modify installation options to run the IAM system.
  • Determine what options have changed with the AUDIT.
  • Print the global option values.
  • Change values by using the ZAP command.
  • Reset options to their original values as supplied on the installation tape.

Related topic

IAM-Global-Option-Change-Facility

The various installation options include defaults for setting file attributes when defining a file, enabling special features in IAM, and other processing options. 

Running a batch job

To run IAMZAPOP as a batch job, use the following JCL:

//IAMZAPOP EXEC PGM=IAMZAPOP
//STEPLIB  DD   DISP=SHR,DSN=iam.loadlib
//SYSLIB   DD   DISP=SHR,DSN=iam.loadlib
//SYSPRINT DD   SYSOUT=*
//SYSIN    DD   *

put control cards here

/*

Example of JCL to run IAMZAPOP

Syntax

Description

EXEC PGM=

Specifies the program name of the IAMZAPOP.

STEPLIB DD

Specifies a STEPLIB to the same library as the SYSLIB to make sure that you run with the IAMZAPOP version that matches the Global Options table that you are modifying

SYSLIB DD

(Required) Specifies the load module library in which the IAM Global Options table resides

SYSPRINT DD

Specifies the output message data set (usually a SYSOUT data set)

COPYTODD DD

Specifies the load library containing the target option table for the COPY operation

The changed options in the SYSLIB option table are copied to the target option table.

This DD is required only for the COPY operation.

SYSIN DD

(Required) Specifies the control statement data set required for all functions (usually an input stream or DD * data set)

Invoking IAMZAPOP through IAM Panel

Use this procedure to invoke IAMZAPOP through IAM panel:

  1. In the IAM PRIMARY OPTION MENU, type U and then press Enter.

    --------------------------- IAM PRIMARY OPTION MENU ---------------------------
    OPTION ===>                                                                    
                                                                                  
       I     - Allocate (DEFINE) a new IAM Dataset                 Ver 11.1.00     
       V     - Allocate (DEFINE) a new VSAM Cluster                                
       D     - Delete a Dataset, Cluster, Path, or Alternate Index                 
       C     - Copy an IAM Dataset, VSAM KSDS, or VSAM ESDS                        
       M     - Move an IAM Dataset, VSAM KSDS, or VSAM ESDS                        
       R     - Rename a Dataset, Cluster, Path, or Alternate Index                 
       U     - Invoke an IAM Utility program                                       
       blank - Display IAM Dataset or VSAM Cluster Information      

  2. In the IAM UTILITY PROGRAM SELECTION MENU, type Z and then press Enter.

    ---------------------- IAM UTILITY PROGRAM SELECTION MENU ---------------------
    OPTION ===> Z                                                                  
                                                                                  
       S  Specify utility print dataset allocation parameters                      
                                                                                  
       I  BLDINDEX - Build Alternate Index                                         
       M  IAMBMON  - Invoke IAMRLS Monitor                                         
       R  IAMRECVR - IAM file diagnostic and recovery utility                      
       V  IAMSTATS - IAM VSAM Interface (VIF) module information                   
       X  IAMXMONI - IAM Execution Monitor/ISPF for CICS Regions                   
       Z  IAMZAPOP - IAM options table utility                                     
       P  IAMUPTFS - IAM PTF Level Reporting                                       

  3. In the IAMZAPOP FUNCTION SELECTION MENU, you can use various IAMZAPOP commands. 
    For detailed information about the IAMZAPOP commands, see 91.02 IAMZAPOP – Format and Options and for ZAP commands, see 91.03 IAMZAPOP – ZAP Command. The following is an example of a sample ZAP command to change IAM Global option.

     ----------------------- IAMZAPOP FUNCTION SELECTION MENU ----------------------
     OPTION ===> Z                                                                  
                                                                                   
        L  LIST     - List IAM options                                              
        R  RESET    - Reset IAM options                                             
        C  COPY     - COPY IAM options                                              
        A  AUDIT    - AUDIT IAM options                                             
        Z  ZAP      - CHANGE IAM options                                            
                                                                                   
     IAM Library Name ===> 'MVSUXS.IAM0316E.IAM.IAMLINK'                            
     Print DSNAME     ===>                                                (optional)
     COPY to DSNAME   ===>                                                (for copy)
     ZAP COMMAND      ===> PE=5,ENABLE=(BUF64,CICSBUF64),                 (65 Chars)
                      ===> DISABLE=ACTSPACE                                         

Running TSO

You can run the IAMZAPOP under TSO. This program prompts you for the commands. The END command saves the new options (if any) and terminates the program. The allocations are required to run IAMZAPOP in the TSO foreground are as follows:

    ALLOC  F(SYSLIB)   DA('iam.library') SHR
    ALLOC  F(SYSPRINT) DA(*)
    ALLOC  F(SYSIN)    DA(*)
    IAMZAPOP

    ------- or if the IAM library is not in LINKLIST-------

    CALL 'iam.library(IAMZAPOP)'

 

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