CICS Maintenance methodology

Example Step by Step CICS Maintenance Procedure. 1. After installation of a new release, and having already created DFHCSVC in hlq.CICS.TEST.DFHCSVC.SDFHLPA.NEW (VERY IMPORTANT!!!!!), run the CICSSVC3 job to rename the Target version of DFHCSVC to SVCMAINT. 2. RECEIVE a new level of maintenance or a set of PTFs. 3. Research any HOLDs, especially ACTIONS. 4. APPLY the maintenance. Research and resolve any problems. 5. Take the Test LPAR down. 6. Run job TSTCLONE to rename the current TEST versions of SDFHLPA SDFHLINK, SDFHAUTH, SDFHLOAD, and SEYULINK to .OLD, and copy the Target versions of the same data sets to hlq.CICS.TEST.*. (verify the hlq for the Target data sets is correct in TSTCLONE). Rename hlq.CICS.TEST.DFHCSVC.SDFHLPA to hlq.CICS.TEST.DFHCSVC.SDFHLPA.OLD, then rename hlq.CICS.TEST.DFHCSVC.SDFHLPA.NEW to hlq.CICS.TEST.DFHCSVC.SDFHLPA 7. IPL the Test LPAR. 8. Change CICSSVC=216 to CICSSVC=217 in the SIT, in hlq.CICS.TEST.SYSIN (in whatever member is the active member), or on the EXEC statement. 9. Bring up the Test CICS system on the Test LPAR, verify it comes up OK, test CEMT, CEDA etc., and in general, test as much as possible. 10. Take the Production LPAR down. 11. If it does not exist, create hlq.CICS.PROD.DFHCSVC.SDFHLPA and copy the production MAINTSVC into it as DFHCSVC. Make the necessary PARMLIB updates. 12. Copy MAINTSVC from hlq.CICS.TEST.SDFHLPA to hlq.CICS.PROD.SDFHLPA after renaming the existing MAINTSVC to MAINTSVO in hlq.CICS.PROD.SDFHLPA. 13. IPL the Production LPAR. 14. Add hlq.CICS.TEST.SDFHLPA and hlq.CICS.TEST.SDFHLINK to the STEPLIB for the Test CICS system if that has not already been done. 15. Bring up the Test CICS system on the Production LPAR and perform rudimentary testing. 16. Change CICSSVC=216 to CICSSVC=217 in hlq.CICS.DEVL.SYSIN, in whatever member is the active member. 17. Add hlq.CICS.TEST.SDFHLPA and hlq.CICS.TEST.SDFHLINK to the STEPLIB for the Development CICS system. Change the DD for SDFHAUTH in STEPLIB from hlq.CICS.PROD.SDFHAUTH to hlq.CICS.TEST.SDFHAUTH. Change the DD for SDFHLOAD in DFHRPL from hlq.CICS.PROD.SDFHLOAD to hlq.CICS.TEST.SDFHLOAD. 18. Bring up the Development CICS system on the Production LPAR. Let it run there for several days. 19. Take the Test LPAR down. 20. Rename DFHCSVC to DFHCSVCO in hlq.CICS.TEST.SDFHLPA, then copy MAINTSVC to DFHCSVC in hlq.CICS.TEST.SDFHLPA. 21. IPL the Test LPAR. 22. Change CICSSVC=217 to CICSSVC=216 in the SIT, in hlq.CICS.TEST.SYSIN, or via the EXEC statement. 23. Bring up the Test CICS system on the Test LPAR, verify it comes up OK, test CEMT, CEDA etc., to test as much as possible. 24. Take the Production LPAR down. 25. Run job PRDCLONE to rename the current PROD versions of SDFHLPA SDFHLINK, SDFHAUTH, SDFHLOAD and SEYULINK to .OLD, and copy the TEST versions of the same data sets to hlq.CICS.PROD.*. 26. IPL the Production LPAR. 27. When the Production CICS system is up, it will be using the new maintenance, so do some testing. 28. If problems arise: a. Take the Production LPAR down. b. Run job PRDBACK on the Production LPAR. This job will clear the hlq.CICS.PROD.* data sets, and copy the contents of hlq.CICS.PROD.*.OLD into them. c. IPL the Production LPAR, which will bring the Production CICS system up without the maintenance. 29. When the maintenance problem is resolved and has been tested on the Test LPAR using the Test CICS system, then on the Production LPAR with the Test CICS system and the Development CICS system, repeat steps 23 through 26 to retry it with the Production CICS system. 30. omment hlq.CICS.TEST.SDFHLPA and hlq.CICS.TEST.SDFHLINK out of STEPLIB in the Test CICS system. 31. Comment hlq.CICS.TEST.SDFHLPA and hlq.CICS.TEST.SDFHLINK out of STEPLIB in the Development CICS system. Leave CICSSVC=217 in hlq.CICS.DEVL.SYSIN.