CICS service considerations

If you use the CICS® TS-supplied SMP/E usermod to install a module into the LPA (for example, into the hlq.SDFHLPA library), and later apply service to that module, it is the LPA-resident version of the module that is serviced. If you have not used the SMP/E usermod to install the module into the LPA, it is the original version in the hlq.SDFHAUTH library or hlq.SDFHLOAD library that is serviced.

Once you have installed CICS, and before you start the post-installation tasks described in this book, you should change the TEMPLIB parameter and the SYSPROC DD statement of the DFHISTAR job to refer to the hlq.SDFHINST library. This ensures that if you need to apply service to any of the skeleton jobs, the changes (applied to the hlq.SDFHINST library) are used in subsequent runs of DFHISTAR. In any such subsequent runs of DFHISTAR , you can use the SELECT parameter to select any jobs, affected by service, to be regenerated.

Notes:
  1. If DFHISTAR is serviced, you should add the service changes to your DFHISTAR module in the hlq.TDFHINST library (to preserve your current installation parameters) or respecify your current installation parameters in the serviced DFHISTAR module (which you can copy from the hlq.SDFHINST library to the hlq.TDFHINST library).
  2. Linkage editor messages IEW0461, IEW2454, IEW2646, IEW2651 and IEW2689 are produced during the APPLY stage for unresolved external references. These are issued, giving a return code of 4, when some CICS load modules are link-edited during PTF installation. You can ignore these IEWxxxx messages because they are produced for component object modules of executable CICS load modules.
  3. JCI640D and JCI640E PTFs to ship Java™ service are often significantly larger than those for the base CICS product and may require more system resources during APPLY processing. To avoid errors caused by insufficient storage, it is recommended that the SMP/E APPLY step for such PTFs does not have a restricted region size. If a region size limit is used and the APPLY fails with errors relating to insufficient storage, it may be necessary to increase or remove the limit for the SMP/E job. In some cases a region size of 500M or more may be required.
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