For those of you that don’t follow IBMMAIN (Cheryl follows everything – I think the NSA follow Cheryl to reduce their own workload!), there has been some recent discussion about an issue in JES2 whereby it consumes 2-3 times as much CPU in z/OS 2.2 as in z/OS 2.1. In an ideal world, you would have spotted that during your normal review of system activity and CPU usage, especially following an upgrade (the additional CPU time shows up in the JES2 address space, in the IAXIS module). But who has the time any more for such ‘luxuries’?
Anyway, two APARs are required to completely address the problem – OA50777 (JES2) and OA50806 (RSM). ++APAR fixes are available, but we hear that the PTFs will be available next week, and apparently removing the ++APARs is a bit of a bear, so probably best to wait for the PTFs at this point. All the customers that were impacted commented on how quickly IBM reacted and made the ++APARs available. So, kudos to the JES2 and RSM teams. Support like that is the reason so many enterprises wouldn’t consider any other platform for their really critical applications.
Stay Tuned and enjoy the rest of your summer – it will be over before you know it. 🙁