DB2 Performance Health Check ...

in just few minutesDUGI 8-9 April 2014

Introduction

DB2 is the preferred repository for mission critical data at all z/OS sites

Performance of z/OS and non z/OS based applications accessing DB2 data is critical for every company business

Managing even simple DB2 environments with continuously shrinking staff is more and more a challenge

DB2 system programmers and DBAs have normally not enough time to dedicate to performance analysis and tuning of DB2 subsystems and applications

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EPV for DB2

EPV for DB2 is an “out of the box” Performance and Capacity Management solution for z/OS environments of any size, type and complexity

EPV for DB2 uses standard input data normally available in any z/OS environments (mostly SMF records)

Through automatic discovery techniques and built-in rules, based on more than 30 years know-how, EPV transforms the bits and bytes into useful information, in a process completely transparent to the users

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Goals

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The main goal of EPV for DB2 is to provide a

comprehensive view of DB2 environments of any level of complexity and to allow a quick and effective top down analysis of DB2

subsystems and workloads.

This goal is accomplished through a completely automated

process, without any need for human intervention.

Goals

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This capability solves what has become a critical issue at most sites: the number of DB2 system analysts and DBA which is normally barely enough to manage an increasing

number of DB2 subsystems. In this situation DB2 performance analysis and tuning is an almost impossible

task to perform.

Thanks to the product design, it is possible to perform a complete check of even the most complex

environments in just a few minutes, without the need for coding and running SQL or

programs.

AdvantagesMost important advantages of EPV for DB2

All the information is ready automatically every day, with no manual intervention required;

Information can be used directly, and additionally you can also export any view to Excel with a single click for further analysis;

You can easily compare one day to another or one DB2 subsystem to another;

Exceptions, critical events and trespassing of thresholds, are highlighted and reported

Daily, weekly and monthly trends are produced

EPV for DB2 is constantly enhanced to reflect DB2’s evolution, removing the maintenance costs of in-house solutions

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Advantages

A final important advantage that our EPV for DB2 customers have found is that, most of the time, all the other performance analysts (CICS, IMS, z/OS, WebSphere, Capacity Planning) don’t have to ask DB2 experts to dedicate time to produce the reports and information they need. They can go straight to with EPV for DB2.

This is really a double advantage

A lot of DB2 information is freed up and always available to

people who need it

Precious DB2 experts’ time is saved

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Advantages

Architecture

EPV is

completely

automatic

and based

on auto

discovery

techniques

EPV runs

on any

platform

EPV can

run stand

alone

(Plus) or

take input

from

SAS/MXG

or

SAS/ITRM

EPV

supports

MySQL, MS

SQL Server

and SAS DB

EPV for

DB2 and

EPV for

DB2 Plus

produce

exactly the

same

results

All the

reports are

in HTML

pages

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EPV for DB2 Plus Architecture

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Catalog Parms SMF

EPV for DB2

EPV zPARSER

Parser SQLDB

EPV SQLDB

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Unique characteristics

Reports design

EPV reports are in static HTML pages

EPV reports are fixed in content;

they can’t be changed by any

event happening to the DB

EPV reports can be easily archived and

then reused at a later date providing

full navigation capabilities

No clients are needed, only a

standard browser

EPV reports are enhanced with

proprietary functions greatly

improving product usability

Every EPV report can be exported to MS-Excel with just

a click of the mouse

Usability functions

Previous/Next daySplit & Compare

1. Column Manager

2. Scroll

3. Export to Excel

4. Favourites

5. Help System

6. Refresh

Top of page Calendar

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Help system exampleGLOBAL DYN CACHE ACTIVITY

This view shows the Global Dynamic Statement Cache activity hourly profile inside a DB2 subsystem

The following metrics are presented:

FIELD DESCRIPTION SOURCE

SHORT PREPARETotal number of short PREPARE. QISDSG - QISEDSI

FULL PREPARE Total number of full PREPARE (see Note 1). QISEDSI

TOTAL PREPARE Total number of PREPARE. QISEDSG

CSWL MATCHEDTotal number of hits when using the CONCENTRATE STATEMENTS WITH LITERALS attributes in the prepare statement.

QXSTCWLM

CSWL UNMATCHEDTotal number of misses when using the CONCENTRATE STATEMENTS WITH LITERALS attributes in the prepare statement.

QXSTCWLP - QXSTCWLM

CSWL REPLACED

Total number of times at least one literal has been replaced in a dynamic statement because CONCENTRATE STATEMENTS WITH LITERALS was used.

QXSTCWLR

CSWL DUPLICATED

Total number of times duplicate STMT instance has been created when using the CONCENTRATE STATEMENTS WITH LITERALS attributes. The duplicate STMT instance was needed because a cache match failed because the literal reusability criteria was not met.

QXSTCWLD

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Unique characteristics

Automatic alerting

EPV automatically provides a log of the

changes made to DB2 parameter

EPV provides a set of user definable

thresholds to create exception alerts for

performance problems and excessive resource

usage workloads

EPV uses statistical analysis and self

adaptive thresholds to automatically

intercept abnormal behavior and produce

exception alerts

EPV exception alerts can be selectively and

automatically distributed to

technical groups and managers

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MESSAGE OBJECT FREQ OP THRESHOLD ALERT

% DBD POOL MEMORY FULL SYSTEM=SYSA,DB2ID=DB2X 14 GT 90,00% DBDFULL

BUFFER POOL HIT RATIO SYSTEM=SYSA,DB2ID=DB2X,BUFFER POOL=BP0 10 LT 80 BPHIRA

BUFFER POOL HIT RATIO SYSTEM=SYSA,DB2ID=DB2X,BUFFER POOL=BP1 9 LT 80 BPHIRA

BUFFER POOL HIT RATIO SYSTEM=SYSA,DB2ID=DB2X,BUFFER POOL=BP32K 9 LT 80 BPHIRA

BUFFER POOL HIT RATIO SYSTEM=SYSA,DB2ID=DB2X,BUFFER POOL=BP8K 9 LT 80 BPHIRA

BUFFER POOL RESIDENCY TIME SYSTEM=SYSA,DB2ID=DB2X,BUFFER POOL=BP0 8 LT 5,0min BPRESTM

BUFFER POOL RESIDENCY TIME SYSTEM=SYSA,DB2ID=DB2X,BUFFER POOL=BP8K 8 LT 5,0min BPRESTM

EDM POOL CT HIT RATIO SYSTEM=SYSA,DB2ID=DB2X 1 LT 70 CTHIRA

DBD POOL FAILURES SYSTEM=SYSA,DB2ID=DB2X 1 GT 0 DBDFAIL

EDM POOL PT HIT RATIO SYSTEM=SYSA,DB2ID=DB2X 1 LT 70 PTHIRA

NUMBER OF TIMEOUTS SYSTEM=SYSA,DB2ID=DB2X 1 GT 0 TIMEOUT

EXCEPTIONS - TUE, 23 OCT 2012

Exceptions

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DB2ID SYSTEM EVENTS MAX 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23

DB2X SYSA LOG_BUFFER_WAITS 404 404 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0

DB2X SYSA DBD_POOL_FAIL 6 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 0

DB2X BY HOUR - TUE, 23 OCT 2012

Critical Events

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DBD POOL DYN POOL EDM POOL EDM POOL LOG BUFFER LOG BUFFER SKEL POOL WAITS DBAT WAITS NODBAT

FAIL FAIL ABOVE FAIL FAIL PAGED IN WAITS FAIL THREAD THREAD

23/10/2012 TUE 6 0 0 0 0 405 0 0 0

22/10/2012 MON 3 0 0 0 0 3 0 0 0

19/10/2012 FRI 5 0 0 0 0 43 0 0 0

18/10/2012 THU 8 0 0 0 0 1 0 0 0

17/10/2012 WED 4 0 0 0 0 1 0 0 0

16/10/2012 TUE 4 0 0 0 0 460 0 0 0

15/10/2012 MON 3 0 0 0 0 0 0 0 0

12/10/2012 FRI 4 0 0 0 0 0 0 0 0

11/10/2012 THU 4 0 0 0 0 0 0 0 0

10/10/2012 WED 9 0 0 0 0 1 0 0 0

09/10/2012 TUE 3 0 0 0 0 1 0 0 0

08/10/2012 MON 0 0 0 0 0 0 0 0 0

05/10/2012 FRI 0 0 0 0 0 1 0 0 0

04/10/2012 THU 0 0 0 0 0 0 0 0 0

CRITICAL EVENTS - DB2X - SYSA

DATE DAY

Configuration Changes

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DATE INTERVAL SYSTEM DB2ID AREA OBJECT PARAMETER STATUS NEW VALUE OLD VALUE

09/10/2012 8,55 SYSA DB2X DB2 CHANGES DB2=DB2X DBD POOL PAGES 2925 88615

09/10/2012 8,55 SYSA DB2X DB2 CHANGES DB2=DB2X DB2 RELEASE 10,1 9,1

09/10/2012 8,55 SYSA DB2X DB2 CHANGES DB2=DB2X DYN STMT POOL PAGES 53471 171057

09/10/2012 8,55 SYSA DB2X DB2 CHANGES DB2=DB2X EDM POOL ABOVE PAGES 0 524287

09/10/2012 8,55 SYSA DB2X DB2 CHANGES DB2=DB2X EDM POOL PAGES 0 3750

09/10/2012 8,55 SYSA DB2X DB2 CHANGES DB2=DB2X SKEL POOL PAGES 2257 15034

29/09/2012 10,48 SYSA DB2Y DB2 CHANGES DB2=DB2Y DBD POOL PAGES 2925 5000

29/09/2012 10,48 SYSA DB2Y DB2 CHANGES DB2=DB2Y DB2 RELEASE 10,1 9,1

29/09/2012 10,48 SYSA DB2Y DB2 CHANGES DB2=DB2Y DYN STMT POOL PAGES 28765 5000

29/09/2012 10,48 SYSA DB2Y DB2 CHANGES DB2=DB2Y EDM POOL ABOVE PAGES 0 524287

29/09/2012 10,48 SYSA DB2Y DB2 CHANGES DB2=DB2Y EDM POOL PAGES 0 1250

29/09/2012 10,48 SYSA DB2Y DB2 CHANGES DB2=DB2Y SKEL POOL PAGES 2257 15034

29/09/2012 9,35 SYSA DB2Z DB2 CHANGES DB2=DB2Z DB2 RELEASE 10,1 9,1

29/09/2012 9,35 SYSA DB2Z DB2 CHANGES DB2=DB2Z EDM POOL ABOVE PAGES 0 524287

29/09/2012 9,35 SYSA DB2Z DB2 CHANGES DB2=DB2Z EDM POOL PAGES 0 3750

DB2 CHANGES - TUE, 23 OCT 2012

Lockouts

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Deadlock details

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Timeout details

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Timeout details

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Buffer Pool Activity

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Workloads

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TOP by Connection type

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TOP by Connection type totals

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Over limit Packages

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Accounting reports

EPV provides the possibility to produce “on demand” Short and Long Accounting reports, in HTML pages, at summary or detail level for plans and packages running during a specific period of time

This makes it possible to investigate in depth and easily the behaviour of these objects running in a DB2 subsystem in order to analyze performance problems and anomalies

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Unique characteristics

Licensing

• The EPV license is based on a onetime fee

• Licensing is based on the number of collected systems, and is not based on the power of the machine or the power used

• The first year’s maintenance is included, but in subsequent years customers have only to pay the maintenance fee

• The maintenance fee includes all releases and new versions of the product

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Unique characteristics

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• There is no additional license fee if the customer wishes to switch from EPV for DB2 to EPV for DB2 Plus and viceversa

• There is no additional license fee if the customer changes the platform where EPV runs

• There is no additional license fee if the customer changes the type of database

• There is no additional license fee if the customer changes the publishing platform

Protection of

investment

Contacts

•epv.support@epvtech.com

S uppor t :

• epv.info@epvtech.com

I n fo :

• laura.seror@epvtech.com

Par tne r s :

•mark.cohen@epvtech.com

•danilo.gipponi@epvtech.com

• fabio.ottaviani@epvtech.com

Mar ket i ng and S a le s :

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