IBM Systems Magazine, Mainframe Edition - March/April 2012 - 37

gradual consumption of a pool of system memory resulting from a storage leak or fragmentation issue. For these types of problems, a predictive failure analysis (PFA) capability allows the system to see such problems as they build up and warns the installation before problems become symptomatic. The objective is to, in essence, buy time to take a minimally disruptive, planned recovery action, such as re-IPLing a system over a weekend before a problem becomes too serious. This helps avoid a much more disruptive, unplanned failure— such as running out of memory during a peak workload period—once the problem becomes critical. PFA also provides state-of-the-art capabilities for modeling observed system behavior, and compares the modeled behavior against the actual behavior to make predictions. For example, it might be perfectly normal for a particular type of resource to run at 90 percent utilization during a peak workload period but abnormal for that same resource to do so during a period of low workload. The PFA’s modeling capabilities allow it to learn these normal system ebbs and flows, and predict problems based on observing abnormal conditions when they occur in the system.

highlight diagnostically interesting messages that point the way to a better understanding of a problem. It would take even an experienced system programmer minutes or hours to page through system logs to find these important clues.

RTD also focuses on resource serialization and contention, which are often factors in queuing problems and delays. It provides insight into what resources are in contention and how long the serialization involved in that contention has been held. It can quickly

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Runtime Diagnostics Once a problem occurs within z/OS, it can be challenging to manually determine where the problem is and what to do about it. The new runtime diagnostics (RTD) component of z/OS uses the system’s resources to analyze and report potential problem areas for further analysis by the system programming staff. RTD is intended to trim precious minutes from problem determination and analysis, allowing the right recovery actions to be taken quickly and effectively. One key area RTD analyzes is the system message logs. It can quickly

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ibmsystemsmag.com/mainframe

MARCH/APRIL 2012

37


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IBM Systems Magazine, Mainframe Edition - March/April 2012

Table of Contents for the Digital Edition of IBM Systems Magazine, Mainframe Edition - March/April 2012

IBM Systems Magazine, Mainframe Edition - March/April 2012
Table of Contents
Editor’s Desk: Rethinking System z
IBM Perspective: Smarter Computing, Enterprise Modernization and the Mainframe
Insider: Proper Tools Can Bring Flexibility to Application Development
IT Today: Six Things You Didn't Know About the Modern Mainframe
Trends: Seven Reasons IT Projects Fail
Cover Story: Agile Thinking: How to leverage existing technology to gain a competitive advantage
Features: All Together Now: A centralized business analytics environment delivers great value
Improving Upon the Gold Standard: System z pushes the limits of high availability
Tech Corner: Processor Design Innovations Empower the z196
Developer: Accurate Project Scoping Helps Map Out a Faster Route to Success
Solutions/Advertiser's Index: PASSPORT Host Integration Objects - LegaSuite 6
Stop Run: Mainframer Clarence Golson Reflects on a Diverse Career Built on a Single Platform
IBM Systems Magazine, Mainframe Edition - March/April 2012 - Intro
IBM Systems Magazine, Mainframe Edition - March/April 2012 - IBM Systems Magazine, Mainframe Edition - March/April 2012
IBM Systems Magazine, Mainframe Edition - March/April 2012 - Cover2
IBM Systems Magazine, Mainframe Edition - March/April 2012 - 1
IBM Systems Magazine, Mainframe Edition - March/April 2012 - Table of Contents
IBM Systems Magazine, Mainframe Edition - March/April 2012 - 3
IBM Systems Magazine, Mainframe Edition - March/April 2012 - 4
IBM Systems Magazine, Mainframe Edition - March/April 2012 - 5
IBM Systems Magazine, Mainframe Edition - March/April 2012 - Editor’s Desk: Rethinking System z
IBM Systems Magazine, Mainframe Edition - March/April 2012 - 7
IBM Systems Magazine, Mainframe Edition - March/April 2012 - IBM Perspective: Smarter Computing, Enterprise Modernization and the Mainframe
IBM Systems Magazine, Mainframe Edition - March/April 2012 - I1
IBM Systems Magazine, Mainframe Edition - March/April 2012 - I2
IBM Systems Magazine, Mainframe Edition - March/April 2012 - I3
IBM Systems Magazine, Mainframe Edition - March/April 2012 - I4
IBM Systems Magazine, Mainframe Edition - March/April 2012 - 9
IBM Systems Magazine, Mainframe Edition - March/April 2012 - Insider: Proper Tools Can Bring Flexibility to Application Development
IBM Systems Magazine, Mainframe Edition - March/April 2012 - 11
IBM Systems Magazine, Mainframe Edition - March/April 2012 - 12
IBM Systems Magazine, Mainframe Edition - March/April 2012 - 13
IBM Systems Magazine, Mainframe Edition - March/April 2012 - IT Today: Six Things You Didn't Know About the Modern Mainframe
IBM Systems Magazine, Mainframe Edition - March/April 2012 - 15
IBM Systems Magazine, Mainframe Edition - March/April 2012 - 16
IBM Systems Magazine, Mainframe Edition - March/April 2012 - 17
IBM Systems Magazine, Mainframe Edition - March/April 2012 - Trends: Seven Reasons IT Projects Fail
IBM Systems Magazine, Mainframe Edition - March/April 2012 - 19
IBM Systems Magazine, Mainframe Edition - March/April 2012 - 20
IBM Systems Magazine, Mainframe Edition - March/April 2012 - 21
IBM Systems Magazine, Mainframe Edition - March/April 2012 - 22
IBM Systems Magazine, Mainframe Edition - March/April 2012 - 23
IBM Systems Magazine, Mainframe Edition - March/April 2012 - Cover Story: Agile Thinking: How to leverage existing technology to gain a competitive advantage
IBM Systems Magazine, Mainframe Edition - March/April 2012 - 25
IBM Systems Magazine, Mainframe Edition - March/April 2012 - 26
IBM Systems Magazine, Mainframe Edition - March/April 2012 - 27
IBM Systems Magazine, Mainframe Edition - March/April 2012 - 28
IBM Systems Magazine, Mainframe Edition - March/April 2012 - 29
IBM Systems Magazine, Mainframe Edition - March/April 2012 - Features: All Together Now: A centralized business analytics environment delivers great value
IBM Systems Magazine, Mainframe Edition - March/April 2012 - 31
IBM Systems Magazine, Mainframe Edition - March/April 2012 - 32
IBM Systems Magazine, Mainframe Edition - March/April 2012 - 33
IBM Systems Magazine, Mainframe Edition - March/April 2012 - Improving Upon the Gold Standard: System z pushes the limits of high availability
IBM Systems Magazine, Mainframe Edition - March/April 2012 - 35
IBM Systems Magazine, Mainframe Edition - March/April 2012 - 36
IBM Systems Magazine, Mainframe Edition - March/April 2012 - 37
IBM Systems Magazine, Mainframe Edition - March/April 2012 - 38
IBM Systems Magazine, Mainframe Edition - March/April 2012 - 39
IBM Systems Magazine, Mainframe Edition - March/April 2012 - Tech Corner: Processor Design Innovations Empower the z196
IBM Systems Magazine, Mainframe Edition - March/April 2012 - V1
IBM Systems Magazine, Mainframe Edition - March/April 2012 - V2
IBM Systems Magazine, Mainframe Edition - March/April 2012 - 41
IBM Systems Magazine, Mainframe Edition - March/April 2012 - 42
IBM Systems Magazine, Mainframe Edition - March/April 2012 - 43
IBM Systems Magazine, Mainframe Edition - March/April 2012 - Developer: Accurate Project Scoping Helps Map Out a Faster Route to Success
IBM Systems Magazine, Mainframe Edition - March/April 2012 - 45
IBM Systems Magazine, Mainframe Edition - March/April 2012 - 46
IBM Systems Magazine, Mainframe Edition - March/April 2012 - Solutions/Advertiser's Index: PASSPORT Host Integration Objects - LegaSuite 6
IBM Systems Magazine, Mainframe Edition - March/April 2012 - Stop Run: Mainframer Clarence Golson Reflects on a Diverse Career Built on a Single Platform
IBM Systems Magazine, Mainframe Edition - March/April 2012 - Cover3
IBM Systems Magazine, Mainframe Edition - March/April 2012 - Cover4
IBM Systems Magazine, Mainframe Edition - March/April 2012 - RF1
IBM Systems Magazine, Mainframe Edition - March/April 2012 - BG1
IBM Systems Magazine, Mainframe Edition - March/April 2012 - BG2
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