Expertz/OS31 min
SMP/E and software maintenance
How z/OS and its products are installed and kept current: SYSMODs, the CSI and its zones, RECEIVE, APPLY, ACCEPT and RESTORE, HOLDDATA, APPLY CHECK, target and distribution libraries, RSU service levels and the change control around them.
What you will be able to do
- Explain why SMP/E exists and the four kinds of SYSMOD: FUNCTION, PTF, APAR and USERMOD
- Describe the CSI, the global, target and distribution zones, and the libraries each zone tracks
- Run the RECEIVE, APPLY CHECK, APPLY and ACCEPT flow safely, reading HOLDDATA before you start
- Plan maintenance around RSU service levels, cloned target sets and proper change control
Lessons
- Why SMP/E exists: SYSMODs and the CSIA z/OS system is built from tens of thousands of parts supplied by IBM and other vendors. SMP/E records exactly which version of every part is installed and why, so fixes can be…
- RECEIVE, APPLY, ACCEPT and RESTOREMaintenance follows a fixed path. RECEIVE stores SYSMODs and HOLDDATA in the global zone, APPLY CHECK shows what would happen, APPLY installs into the target libraries, and…
- Service levels, RSUs and change control for maintenanceSites do not apply fixes one by one at random. They pick a tested service level such as an RSU, apply it to a cloned set of target libraries, test it, and roll it out system by…
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