IBM Systems Magazine, Mainframe - November/December 2015 - 34

TECH CORNER

PINPOINTING Problems
Runtime Diagnostics and Predictive Failure Analysis V2.2 improve z/OS availability

W

hile z/OS* availability is excellent, we know sometimes bad things
happen. Knowing in advance that something is amiss can give you
the time needed to correct the problem before an outage occurs. Also,
quickly diagnosing the cause will get your systems running at their peak with the
least impact on your business.

Karla Arndt
is an IBM senior
software engineer
and the team
leader of Predictive
Failure Analysis
and Runtime
Diagnostics.

Prior to z/OS V2.2, Predictive
Failure Analysis (PFA) sent
alerts about the potential for
exhaustion of common storage
and the possibility of a damaged
system and damaged address
spaces using five types of analysis.
Previously, Runtime Diagnostics
investigated your system for seven
types of issues to help pinpoint the
source of your system's problems.
Both PFA and Runtime
Diagnostics have significant
enhancements in V2.2-and one
in V2.1-designed to improve
your systems' availability.

Private Virtual
Storage Exhaustion
V2.2 features a new PFA health

check: PFA_PRIVATE_STORAGE_
EXHAUSTION. This check collects
historical data from individual
address spaces and up to a
maximum of six storage locations
within them. Data usage trends
are then projected into the future
to determine if any of the address
spaces for any of the locations
collected have the potential to
utilize more than their currently
available storage capacity. If so,
PFA alerts you to this potential,
future exhaustion and creates an
exception report that helps with
your problem investigation by
providing detailed information
about the storage consumption.
By default, the closer the
address space is to exhausting

storage, the higher the severity
of the write-to-operator message
issued. When the potential for
future exhaustion is detected,
PFA calculates the predicted
time of exhaustion based on the
historical trend projected into the
future along with the currently
available capacity. PFA then uses
the values in the checks' configurable parameters to determine
the severity of the message.
These configuration parameters
give you the flexibility to choose
the severity of the message
based on the amount of time to
exhaustion. Even better, PFA has
enhanced the PFA_COMMON_
STORAGE_USAGE check to use
this dynamic severity feature and

Figure 1: Runtime Diagnostics SERVERHEALTH Event
EVENT 01: HIGH - SERVERHEALTH - SYSTEM: SY1
2014/08/14 - 10:39:18
JOB NAME: IRLM9
ASID: 0150 CURRENT HEALTH VALUE: 0
CURRENT LOWEST HEALTH VALUES:
SUBSYSTEM
HEALTH
REPORTED
SUBSYSTEM NAME
SETTING
REASON DATE AND TIME
XCF
XCF
80 0000000000000001 2014/08/14 10:38:29
XES
IRLM9
0 000000080000000C 2014/08/14 10:37:27
ERROR: ADDRESS SPACE SERVER CURRENT HEALTH VALUE LESS THAN 100.
ERROR: THIS VALUE MAY IMPACT YOUR SYSTEM OR SYSPLEX TRANSACTION
ERROR: PROCESSING.
ACTION: USE YOUR SOFTWARE MONITORS TO INVESTIGATE THE ASID AND TO
ACTION: DETERMINE THE IMPACT OF THE HEALTH OF THE ADDRESS SPACE TO
ACTION: OVERALL TRANSACTION PROCESSING.

34 // NOVEMBER/DECEMBER 2015 ibmsystemsmag.com


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IBM Systems Magazine, Mainframe - November/December 2015

Table of Contents for the Digital Edition of IBM Systems Magazine, Mainframe - November/December 2015

IBM Systems Magazine, Mainframe - November/December 2015
Table of Contents
IBM Perspective: Opening new options for real-time analytics
Editor's Desk: Predictive analytics enhances purchases
Infographic: Breaking down the mainframe skills gap
Partner PoV: IBM z Systems clients must manage existing and emerging assets together to get the most value
Focus on Storage: The IBM Spectrum Storage family of software-defined solutions simplifies storage management
Currents: Architect real-time analytics into operational systems for competitive advantage
Cover Story: Dynamic Spark: IBM brings the Apache project's analytics power to Linux and z Systems servers
Feature: Personal Shopper: Retailer optimizes analytics to drive a more customized client experience
Tech Showcase: In a roundtable, distributors discuss how IBM LinuxONE enables flexibility for users
Tech Corner: Runtime Diagnostics and Predictive Failure Analysis V2.2 improve z/OS availability
Solutions: Strobe 5.2
Stop Run: IBMer volunteers time to educate people about malaria and technology
Reference Point - Global Events, Education, Resources for Mainframe
2016 Mainframe Solutions Edition Product Index
IBM Systems Magazine, Mainframe - November/December 2015 - Intro
IBM Systems Magazine, Mainframe - November/December 2015 - IBM Systems Magazine, Mainframe - November/December 2015
IBM Systems Magazine, Mainframe - November/December 2015 - Cover2
IBM Systems Magazine, Mainframe - November/December 2015 - 1
IBM Systems Magazine, Mainframe - November/December 2015 - Table of Contents
IBM Systems Magazine, Mainframe - November/December 2015 - 3
IBM Systems Magazine, Mainframe - November/December 2015 - 4
IBM Systems Magazine, Mainframe - November/December 2015 - IBM Perspective: Opening new options for real-time analytics
IBM Systems Magazine, Mainframe - November/December 2015 - Editor's Desk: Predictive analytics enhances purchases
IBM Systems Magazine, Mainframe - November/December 2015 - 7
IBM Systems Magazine, Mainframe - November/December 2015 - Infographic: Breaking down the mainframe skills gap
IBM Systems Magazine, Mainframe - November/December 2015 - Partner PoV: IBM z Systems clients must manage existing and emerging assets together to get the most value
IBM Systems Magazine, Mainframe - November/December 2015 - 10
IBM Systems Magazine, Mainframe - November/December 2015 - Focus on Storage: The IBM Spectrum Storage family of software-defined solutions simplifies storage management
IBM Systems Magazine, Mainframe - November/December 2015 - 12
IBM Systems Magazine, Mainframe - November/December 2015 - 13
IBM Systems Magazine, Mainframe - November/December 2015 - 14
IBM Systems Magazine, Mainframe - November/December 2015 - Currents: Architect real-time analytics into operational systems for competitive advantage
IBM Systems Magazine, Mainframe - November/December 2015 - 16
IBM Systems Magazine, Mainframe - November/December 2015 - 17
IBM Systems Magazine, Mainframe - November/December 2015 - Cover Story: Dynamic Spark: IBM brings the Apache project's analytics power to Linux and z Systems servers
IBM Systems Magazine, Mainframe - November/December 2015 - 19
IBM Systems Magazine, Mainframe - November/December 2015 - 20
IBM Systems Magazine, Mainframe - November/December 2015 - 21
IBM Systems Magazine, Mainframe - November/December 2015 - 22
IBM Systems Magazine, Mainframe - November/December 2015 - 23
IBM Systems Magazine, Mainframe - November/December 2015 - Feature: Personal Shopper: Retailer optimizes analytics to drive a more customized client experience
IBM Systems Magazine, Mainframe - November/December 2015 - 25
IBM Systems Magazine, Mainframe - November/December 2015 - 26
IBM Systems Magazine, Mainframe - November/December 2015 - 27
IBM Systems Magazine, Mainframe - November/December 2015 - 28
IBM Systems Magazine, Mainframe - November/December 2015 - Tech Showcase: In a roundtable, distributors discuss how IBM LinuxONE enables flexibility for users
IBM Systems Magazine, Mainframe - November/December 2015 - 30
IBM Systems Magazine, Mainframe - November/December 2015 - 31
IBM Systems Magazine, Mainframe - November/December 2015 - 32
IBM Systems Magazine, Mainframe - November/December 2015 - 33
IBM Systems Magazine, Mainframe - November/December 2015 - Tech Corner: Runtime Diagnostics and Predictive Failure Analysis V2.2 improve z/OS availability
IBM Systems Magazine, Mainframe - November/December 2015 - 35
IBM Systems Magazine, Mainframe - November/December 2015 - 36
IBM Systems Magazine, Mainframe - November/December 2015 - 37
IBM Systems Magazine, Mainframe - November/December 2015 - Solutions: Strobe 5.2
IBM Systems Magazine, Mainframe - November/December 2015 - 39
IBM Systems Magazine, Mainframe - November/December 2015 - Stop Run: IBMer volunteers time to educate people about malaria and technology
IBM Systems Magazine, Mainframe - November/December 2015 - Cover3
IBM Systems Magazine, Mainframe - November/December 2015 - Cover4
IBM Systems Magazine, Mainframe - November/December 2015 - RF1
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