Improving z/OS Application Availability by Managing Planned Outages

Improving z/OS Application Availability by Managing Planned Outages

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This IBMAr RedbooksAr publication is intended to make System Programmers, Operators, and Availability Managers aware of the enhancements to recent releases of IBM z/OSAr and its major subsystems in the area of planned outage avoidance. It is a follow-on to, rather than a replacement for, z/OS Planned Outage Avoidance Checklist, SG24-7328. Its primary objective is to bring together in one place information that is already available, but widely dispersed. It also presents a different perspective on planned outage avoidance. Most businesses care about application availability rather than the availability of a specific system. Also, a planned outage is not necessarily a bad thing, if it does not affect application availability. In fact, running for too long without an IPL or subsystem restart might have a negative impact on application availability because it impacts your ability to apply preventive service. Therefore, this book places more focus on decoupling the ability to make changes and updates to your system from IPLing or restarting your systems.The ability to stop and restart the System REXX address space (AXR). By restarting System REXX, you can change the list of System REXX concatenated data sets without an IPL. ... Note that using this command stops AXR as well, which runs under the MASTER subsystem, and might not need to be stopped. ... In this command, aa, bb are AXRxx PARMLIB members found in the PARMLIB concatenation.


Title:Improving z/OS Application Availability by Managing Planned Outages
Author: Frank Kyne, Andy Clifton, Justin Deane, Fernando Ferreira, Richard Gunjal, Chuck Laurent, John Papp, Judy Ruby-Brown, Maida Snapper, Michael Stephen, Dave Viguers, Marna Walle, Yvonne Zemotel, IBM Redbooks
Publisher:IBM Redbooks - 2014-12-22
ISBN-13:

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