Right! Or applying maintenance to individual subsystems. Looking at my IPL history, I see 6 IPLs for most of our systems in the past 12 months, but that may be slightly high since over that time period we've done 2 DASD replacements, changed on out the CPUs and upgraded z/OS. It looks like 10 IPLs over the last 24 months.
I have noticed that the "system" CPU workload does seem to decrease a bit immediately after an IPL, but I've never tried to quantify it or track it down. In contrast, we still recycle CICS regions that run application code every night, DB2s weekly, and most WASes weekly. Those are "mostly" non-disruptive for most of our applications--they're either data sharing across the sysplex or inactive at those times. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
