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Determining what version of DFHIRP is loaded in the MVS LPA

Question & Answer


Question

You are either having problems with MRO communications, or you are doing planning and need to find out what version of DFHIRP is loaded into your system Link Pack Area (LPA). You want to know, how can you determine the version and maintenance level of DFHIRP without having to examine an SVC dump?

Answer

You can use ISRDDN, a built-in TSO service that lets you examine your dataset allocations, as well as system LINKLIST and LPALIB concatenations.

Follow these steps to determine what version of DFHIRP is loaded in your LPA:
  1. Logon to TSO, and type the following command on the command line:

    TSO ISRDDN

    and press Enter. You should see your Current Data Set Allocations, similar to the following:


     
  2. You now need to tell ISRDDN to also include the system LINKLIST and LPALIB datasets. You do this by entering command:

    LINKLIST

    and pressing Enter. You will then see a screen similar to the following:


     
  3. Since DFHIRP is loaded in the LPA, you are only interested in that dataset concatenation. So, enter the following command:

    ONLY LPALIB

    and press Enter. You should now see something similar to the following:


     
  4. In order to find which dataset(s) in the list contains DFHIRP, you now enter the following command then press Enter:

    MEMBER DFHIRP
     
  5. In order to find which dataset has DFHIRP, the MEMBER command must look at each dataset in the list. A warning panel will be displayed, to verify that you do want to look at each. The warning panel will display the following:


     
  6. Type YES to proceed, and press Enter. If you do not have security to browse the datasets, you might get a series of security errors on your screen. Eventually, you should end up with the following "CSVQUERY Results" screen:



    This screen tells you the load address of DFHIRP, the size, and other attributes.
     
  7. You now need to actually view that storage in order to see what version and maintenance level you have. Press the TAB key to tab down to the words "PLPA resident" and then press the Enter key. You will be browsing the DFHIRP module itself in storage, and the following will appear:


     
  8. The module header information is prior to the entry point, so you will need to page back one page by pressing PF7 once. You will then see something like the following:



    In this case, the module name is "DFHIRP", the version is "650", and the PTF level in the above case is "UK30311".

[{"Type":"MASTER","Line of Business":{"code":"LOB70","label":"Z TPS"},"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SSGMGV","label":"CICS Transaction Server"},"ARM Category":[{"code":"a8m0z000000cwh7AAA","label":"CICS intercommunication"}],"ARM Case Number":"","Platform":[{"code":"PF035","label":"z\/OS"}],"Version":"5.5.0;5.6.0;6.1.0;6.2.0"}]

Product Synonym

CICS/TS CICS TS CICS Transaction Server

Document Information

Modified date:
05 January 2026

UID

swg21294935

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