upgrading to ims v12 from ims v10_best practices and lessons learned - ims ug phoenix 12-2013

Upgrading to IMS V12 from IMS V10Best practices and lessons learned

Session Number IMS-1012A

Jeff M. SullivanSenior Systems ProgrammerState of [email protected]

© 2013 IBM Corporation

Dennis EichelbergerIT Specialist zSeries Software IMS ATS [email protected]

Trademarks and disclaimers

The following are trademarks of the International Business Machines Corporation in the United States, other countries, or both.

The following are trademarks or registered trademarks of other companies.

* All other products may be trademarks or registered trademarks of their respective companies.

Notes:

Performance is in Internal Throughput Rate (ITR) ratio based on measurements and projections using standard IBM benchmarks in a controlled environment. The actual throughput that any user will experience will vary depending upon considerations such as the amount of multiprogramming in the user's job stream, the I/O configuration, the storage configuration, and the workload processed. Therefore, no assurance can be given that an individual user will achieve throughput improvements equivalent to the performance ratios stated here.

IBM hardware products are manufactured from new parts, or new and serviceable used parts. Regardless, our warranty terms apply.

All customer examples cited or described in this presentation are presented as illustrations of the manner in which some customers have used IBM products and the results they may have achieved. Actual environmental costs and performance characteristics will vary depending on individual customer configurations and conditions.

This publication was produced in the United States. IBM may not offer the products, services or features discussed in this document in other countries, and the information may be subject to change without notice. Consult your local IBM business contact for information on the product or services available in your area.

All statements regarding IBM's future direction and intent are subject to change or withdrawal without notice, and represent goals and objectives only.

Information about non-IBM products is obtained from the manufacturers of those products or their published announcements. IBM has not tested those products and cannot confirm the performance, compatibility, or any other claims related to non-IBM products. Questions on the capabilities of non-IBM products should be addressed to the suppliers of those products.

Prices subject to change without notice. Contact your IBM representative or Business Partner for the most current pricing in your geography.

For a complete list of IBM Trademarks, see www.ibm.com/legal/copytrade.shtml:

*, AS/400®, e business(logo)®, DBE, ESCO, eServer, FICON, IBM®, IBM (logo)®, iSeries®, MVS, OS/390®, pSeries®, RS/6000®, S/30, VM/ESA®, VSE/ESA, WebSphere®, xSeries®, z/OS®, zSeries®, z/VM®, System i, System i5, System p, System p5, System x, System z, System z9®, BladeCenter®

Not all common law marks used by IBM are listed on this page. Failure of a mark to appear does not mean that IBM does not use the mark nor does it mean that the product is not actively marketed or is

not significant within its relevant market.

Those trademarks followed by ® are registered trademarks of IBM in the United States; all others are trademarks or common law marks of IBM in the United States.

Adobe, the Adobe logo, PostScript, and the PostScript logo are either registered trademarks or trademarks of Adobe Systems Incorporated in the United States, and/or other countries.

Cell Broadband Engine is a trademark of Sony Computer Entertainment, Inc. in the United States, other countries, or both and is used under license therefrom. Java and all Java-based trademarks are trademarks of Sun Microsystems, Inc. in the United States, other countries, or both.

Microsoft, Windows, Windows NT, and the Windows logo are trademarks of Microsoft Corporation in the United States, other countries, or both.

Intel, Intel logo, Intel Inside, Intel Inside logo, Intel Centrino, Intel Centrino logo, Celeron, Intel Xeon, Intel SpeedStep, Itanium, and Pentium are trademarks or registered trademarks of Intel Corporation or

its subsidiaries in the United States and other countries.UNIX is a registered trademark of The Open Group in the United States and other countries.

Linux is a registered trademark of Linus Torvalds in the United States, other countries, or both.

ITIL is a registered trademark, and a registered community trademark of the Office of Government Commerce, and is registered in the U.S. Patent and Trademark Office.

IT Infrastructure Library is a registered trademark of the Central Computer and Telecommunications Agency, which is now part of the Office of Government Commerce.

Any opinions, findings, conclusions or recommendations presented in this material are strictly those of the speaker and do not necessarily reflect the views of the Arizona Strategic Enterprise Technology (ASET), Arizona Department of Administration (ADOA) or the State of Arizona.

2

THIS PAGE LEFT INTENTIONALLY BLANK

3

j1

j1 jmspsullivan, 7/30/2013

Presentation topics

� IMS V12

� Your environment

� Before starting the upgrade

� Pulling down the software

� The issues we experienced

4

� IMS V12





5

Your environment - political

� Make sure every one is on-board

− Communicate to everyone

− Pull in you IMS DBAs to help

− Motivate end users

6

Your environment - technical

� SVCNO

� SMP/E setup

� Name standard

7

SVCNO

8

SVCNO

IMS Nucleus SVCNO

9

SVCNO

DBRC SVCNO

10

SVCNO

11

LPA library is APF-authorized

12

SMP/E - Build a zone for each IMS subsystem

13


14


15


� Use ZONEEXPORT to get list of datasets

� Use ZONECOPY to clone the target/distribution

� Use ZONEEDIT to mass-edit the cloned zone

Do not forget to clone those datasets, too!!

SA22-7771 SMP/E Commands manual

16

SMP/E and IMS – How we did it

� DDDEF in each target

� Define for all SDFS*

� SDXR (IRLM) optional

17

SMP/E and IMS –How we did it

18

Name standard

19

Name standard

20

� IMS V12





21

Before starting the upgrade

� Find someone who has done this before

� IMS SYSGEN

� Check “what’s new”

� Review current new features

� Find any “special” exits and validate they are required

22

Short story #1

If skipping a release, make sure all release information is checked!

Short story #2

Surprise! We used an IMS reserved word as a database name!

Find an IMS mentor and gather knowledge

� Consider services with knowledge transfer

� Area IMS user groups (or a DB2 user group if no IMS)

� Informational PMR

� Search out your site IBM IMS liaison

� IBM technical sales people

� Conferences

− IOD

− SHARE

− IMPACT

25

IMS SYSGEN

� Definitions of databases, transactions, application PSBs, VTAM and non-VTAM devices

� Dynamic resource definition (DRD)

� IMS resource definition (IMSRSC) repository

26

� IMS V12





27

Pulling in the software - Shopz

Website: https://www14.software.ibm.com/webapp/ShopzSeries/ShopzSeries.jsp

CBPDO

� No SMP/E environment

ServerPac

� Complete buildup

28

Pulling in the software

� 1 year to get it all installed

� Consider the RSU maintenance

� Carefully consider SMP/E ACCEPT

29

� IMS V12





30

Lessons learned

� Have a good script

� Minimal replacement

� Installation verification program

� Critical items as documented by

− IBM

− IMS manual “What’s New”

− Redbooks specific to the IMS release

� CICS exit

31

� Landmines in you SDFSRESL

� Locking, the IRLM and DMB

� Know thy toolset

� Open systems

− Exits and business partners

− IMS Connect

− Common services layer

− Open database manager

Conversion script

� Pre-conversion work

− Create and populate .NEW

− Stage 1 and 2

− Fix landmines

− Verify .NEW versus current

� Stop IMS + CSL

� Tooling

� Landmines

− User exits

− Sparse routines

− Compression routines

32

Conversion script

33

� ACB Gen

� Upgrade RECON

� Start CSL

� IMS Startup

/S <IMS ctl regn>,AUTO=N

/r ##,/NRE CHKPT 0 FORMAT ALL.

� FULL Image Copy

� RECON flags validated

� Run an online change if DB/DC

� Check tooling functionality

� Critical path IMS DC or CICS transactions

Minimal replacement

34

� Cookie-cutter script

− No new libraries

− Address spaces do not change

� Three main PDSs replaced

− DFSRESL

− MODBLKS

− OBJDSET

� Tooling

May need to copy

randomizing, sparsing, and user-specific routines

from .OLD to .NEW

The meaning of IVP

35

To a DB2 systems programmer…

The meaning of IVP

36

To an IMS systems programmer…

Determine what’s new

� This will take time

� Critical items as documented by

− IMS manual “Release Planning”

− Redbooks specific to the IMS release

The IMS catalog and repository

� New to IMS V12

� Why should we care?

� One person’s opinion

� Next steps

CICS Exit

� Copied from OLD SDFSRESL to NEW

� Make sure you can find the source (just in case)

� Located in INSTALIB(IV3E308J)

Non-IMS load modules in SDFSRESL

� Normal

− Compression routines

− Randomizers

− Secondary index sparse routines

� Leftovers

− Application programs

− AOI routines

− pre-Columbian art

� Clean installs are nice

Locking, the IRLM, and the DMB

Know thy toolset

� Find all IMS tools being used

� Compatibility vs Fully-Compliant

� Combine SMP/E if…

− Same vendor used with same DBMS

− Usage dictates it should be with IMS SMP/E

Only replace things that need replacing…to summarize

� V10 to V11 to V12 no address space changes

� Three datasets

− DFSRESL

− MODBLKS

− OBJDSET

� Critical items

− RECON update

− Log compatibility PTF

− Open Systems (know who is attaching to your IMS subsystem or IMS group

− Bring in your customers and partners

− Watch for any user exits

− Mind the deprecation list

QUESTIONS

48

IMS has a Catalog:Did you get the memo?

Session Number IMS-1013A

Jeff M. SullivanSenior Systems ProgrammerState of [email protected]

© 2013 IBM Corporation

Nancy G. Stein IT Specialist zSeries Software IMS ATS [email protected]

THIS PAGE LEFT INTENTIONALLY BLANK

50

Presentation topicsPresentation topics

51

� IMS inevitability

� Technical details

� Examples

� Considerations

It was inevitable

� Outsourcing

� Those #%&*@!* servers

� The monolithic machinery

� It needs to be pretty

� Sign of the times

� Business analytics

� Decades of IMS data

Specifically, what does it mean

� Decreased skills in the community

� Paradigm that IMS represents only green-screen

� The mainframe reinvention

− Java service class in WLM

− WLM enclave processing

− Business analytics with Cognos

− DB2 with Netezza – Smart analytics optimizer

− zLinux

� IBM supporting 2 very similar database products

The implications to IMS

� IMS skills are very hard to find

� Mainframe reinvention

� Many people know SQL

What does it do for me?

� Tooling

� Shared knowledge base (if supporting DB2)

� Simplification


56



� Examples

� Considerations


57



� Examples

� Considerations

Example – catalog deployment

Example – catalog populate

Example – DFSDDLT0

Example – DFSDDLT0

Refer to database

administration manual, chapter 8, “Format of

records in the IMS catalog database”

Address spaces required

Control cards

Redbook on IMS connectivity

http://www.redbooks.ibm.com/Redbooks.nsf/RedpieceAbstracts/sg248174.html?Open

It works correctly when…

Connecting to IMS Connect with IMS Explorer

IMS Explorer

IMS Explorer connectivity

Connecting to IMS Connect with IMS Explorer

70

IMS Catalog Benefits

• Trusted, online source for IMS metadata

• Direct access to IMS metadata in the catalog

• Leveraged by the Universal Database Drivers

• No need for “local” Java metadata classes

71

IMS Catalog Benefits

• IMS Catalog

• Contains information about IMS program resources, database resources, and relevant application metadata

• New ACBGEN

• Used to auto-populate the catalog

• The IMS Catalog: The Next Step in Simplification and Enterprise Integration

http://www-01.ibm.com/software/sw-events/teleconference/D108305C25358T22.html

• IMS Enterprise Suite Explorer for Development

• Generates DBD/PSB source used to populate the catalog

• Enables IMS metadata discovery

• IMS Enterprise Suite Explorer: The new face of IMS

http://www-01.ibm.com/software/sw-events/teleconference/T929253D59548D24.html


72



� Examples

� Considerations

Things to be considered

� Make sure every one is on-board

− Communicate to staff

− Pull in you IMS DBAs to help

� Process changes for rolling in new DBDs and PSBs

� Management of COPYLIB changes

� Access to objects - Tooling makes administration easy

� Auditing changes such as SOx or ISO

� Changes made without visibility

QUESTIONS

74

upgrading to ims v12 from ims v10_best practices and lessons learned - ims ug phoenix 12-2013

Technology

registered trademarks

ibm logo

united states

ibm hardware products

ibm representative

intel logo

javabased trademarks

standard ibm benchmarks