4. 3
Introduction
• This presentation is intended to educate and assist in
performing WebSphere Application Server Version to
Version Migrations
• It contains overall planning guidelines as well as
migration concerns for your awareness
• It does not prescribe one Migration path
• Varies with customer policies
• Varies with versions involved
• Varies with customer procedures
• Use this information as a guide to build your own plan
• Get assistance if needed
5. 4
The whole migration process involves a variety of steps
Application changes and testing is 37%
Migrating configuration is 25%
What if you could make this easier?
Migration Overview
Migration
Planning
Configuration
Migration
Application
Migration
Migrated
environments
6. 5
Migration impacts overview
Migration impact is gated by two overarching factors
1. The versions involved in the customer Migration scenario
– Moving from v7.0 to v8.5.5 is different than moving from v6.0.2 to v8.5
2. The amount of change introduced in and between these versions
– Moving from v7.0 to v8.5.5 involves changes introduced by v8.0 and v8.5
– Moving from v5.1 to v8.5.5 involves changes introduced by v6.0.2, v6.1, v7.0, v8.0
and v8.5
v6.0.2 v6.1 v7.0 v8.0 v8.5
Configuration Port assignment Security None None None
Application JSP and Servlet Java Runtime Some Minimal None*
v6.0.2 to v8.0
v6.1 to v8.5.5
None* means no required code changes with default of JRE6 when using traditional WAS runtime
7. 6
v5.x v6.0.2 v6.1 v7.0 v8.0 v8.5 V8.5.5
IDE WSAD
5.1
RAD v6.0 RAD v7.0 RAD v7.5
WDT 7.0
RAD v8.0
WDT 8.0
RAD v8.5
WDT 8.5
RAD V8.5.5
WDT 8.5.x
RAD V9.0
RAD V9.1
Code J2EE 1.3
JRE 1.3
(v5.0)
JRE 1.4
(v5.1)
J2EE 1.4
JRE 1.4
J2EE 1.4
JRE 5
JEE 5
JRE 6
JEE 6
JRE 6
JEE 6
JRE 6/JRE 7
Liberty
JEE 6/ JEE 7
JRE 6/JRE 7/
JRE 8
Liberty
Liberty Core
Deploy EAR EAR
Config in
EAR
EAR
Config in
EAR
EAR/BLA
Config in
EAR
EBA(FeP)
EAR/BLA
Config in
EAR
EBA
EAR/BLA
Config in
EAR
EBA
Liberty
EAR/BLA
Config in
EAR
EBA
Liberty
Externals Summary
Rational Application Developer (RAD)
WebSphere Development Tools (WDT)
8. 7
• Installs as a fix pack on top of v8.5.0.x
• No need to install in a new directory!
• No need to migrate configuration!
• Configuration is backwards compatible with v8.5.0.x
• Full profile
• Liberty profile
• Liberty profile is now separate. No longer installed with Full profile
• New Liberty Core Offering
• Has implications if you installed Liberty via Installation Manager in
v8.5.0.x
– More on this later in details section
A few words about v8.5.5
9. 8
Choosing the “right” version
• Question: “Which WebSphere Application Server version
should I migrate to?”
• Answer, as always - “It depends”
• End of Service date for your current version
– WebSphere Application Server v5.1 was September 2008
– WebSphere Application Server v6.0.2 was September 2010
– WebSphere Application Server v6.1 was September 2013
• Characteristics of your targeted version
– End of Service date for the version – most likely an estimate
– Stability in lifecycle
– JEE/JDK levels relative to targeted version
– New WebSphere Application Server features you want
– Version requirements of vendor or IBM products that you have or want
– Version your Enterprise has committed towards
– What about fix pack level? – is there an implicit company policy?
– What else that you use that depends on a WAS version number?
• The default “best” answer is v8.5.5
• The exception is products with WAS dependencies on previous versions
10. 9
Support policies
At least 12 months notice prior to an IBM branded product release’s
EOS date and the availability of support extensions for an extra
charge set by IBM
• Endeavor to coordinate EOS dates on 30 April or 30 September
Enhanced ‘5+3’ support statement as of March 2007
• Five years for standard, three for extended support.
• Updated April 2008 to include selected products within the Information
Management, IBM Lotus, IBM Rational, IBM Tivoli and WebSphere...
–http://www-1.ibm.com/support/docview.wss?uid=swg21256700
Latest as of 2011
• One of our new initiatives will be to support, on a going-forward basis
for select IBM branded products that have not previously announced
an EOS date, not only the ‘current’ version of the product, but also up
to two previous versions, in an effort to limit disruptive technology
transitions.
In this context, a ‘version’ is a major functional enhancement level. While not every IBM software product will be subject to this
initiative, initial focus is to support key products from all of our software brands, and expand products over time
–http://www.ibm.com/software/support/lifecycle/lc-policy.html
11. 10
Best practices, offers, incentives
• PVU Waiver offer: IBM will now grant
customers no charge, temporary use
Software Subscription & Support (S&S)
rights to continue using their current
licenses in production while also using up to
2x those license entitlements for migration
to a later WAS Version.
• Migration Assist: is available for
customers on Support and Maintenance.
Customers can call Support with migration
questions
• ISSW Assessments: are available to assist
customers with their migration planning and
execution activities
• IBM Software Accelerated Value Program:
provides expertise in custom version to
version migrations.
• Website Knowledge Center
• IBM WebSphere on SoftLayer Promotion
– Use your WebSphere PVUs both on-premise
and in the IBM cloud.
– Promotion period: Mar 09 – Sept 09, 2015
– No restrictions on use. Support through your
S&S.
– Cost of cloud infrastructure is not included as
part of the promotion (SoftLayer and PureApp
Service).
– When the promotion ends, purchase additional
PVUs to continue running in the cloud.
Best Practices, Offers, Incentives Added Offers
13. 12
Migration Plan Roadmap
• Assessment
• Planning
• Skills
• Development Environment
• Application Code Migration
• Runtime Environment Migration
• Test
• Production
• Review the results
Assessment
Planning
Skills
Production
Review
results
Test
Development
Environment
Code
Migration
Unit Test
Runtime
Environment
Runtime
Migration
Test
Systems
Development
Environment
Runtime
Environment
14. 13
Assessment
• Gather the stakeholders
• Communications with clients, peers, and leadership
• Consider a core Migration team for larger scale
• Identify education requirements
• Developer, Administrator…
• Hardware requirements
• Possible Upgrades, 64 bit versus 32 bit
• Topology assessment
• Downtime tolerance, Failover support
• Application architecture
• Tightened JEE specifications
• Dependencies between apps
• API removal, JRE changes
• Review Testing practices
• Standard practices and automation
• Vendor apps and WebSphere products
• J2EE/JDK/WebSphere version requirements
Assessment
Planning
Skills
Production
Review
results
Test
Development
Environment
Code
Migration
Unit Test
Runtime
Environment
Runtime
Migration
Test
Systems
Development
Environment
Runtime
Environment
15. 14
Planning - Questionnaires
• Runtime Environment
• Overall Infrastructure questions
• Hardware and Software prereqs
• HTTP Server, Network Edge
• Availability requirements
• Rollout plans
• Administration
• Security
• Test Practices and tools
• Development Environment
• Workstations and IDEs
• Test configurations
• Software development skills
• Development methodology
• Build, Packaging Tooling and Process
• Many Detailed Questions: WAS 8.5
WebSphere Migration Guide (Appendix A)
http://www.redbooks.ibm.com/redpieces/abstracts/sg248048.html
Assessment
Planning
Skills
Production
Review
results
Test
Development
Environment
Code
Migration
Unit Test
Runtime
Environment
Runtime
Migration
Test
Systems
Development
Environment
Runtime
Environment
16. 15
Planning
• Build a plan based on assessment
• Hardware and license requirements
• Prerequisite and requisite software
– Check with “Clarity” website
• Education
– IBM Education Assistant, IBM Education, …
• Account for many applications and multiple
development teams?
– Identify early adopters
– Identify Pilot projects
– Migration as an initiative or project?
• Application rollout strategies
– “Stealth”, “Train”, Voluntary, Continuous…
• Consider timeline factors
– Availability, maintenance windows, lockdowns
• Plan for High Availability
– Mixed version clusters requires dual app
compatibility
• Create an execution timeline
• Include a rollback plan
Assessment
Planning
Skills
Production
Review
results
Test
Development
Environment
Code
Migration
Unit Test
Runtime
Environment
Runtime
Migration
Test
Systems
Development
Environment
Runtime
Environment
17. 16
Skills
• Plan for education
• New development tooling
• Enhancements in WebSphere
administration model
• Changes in the latest WebSphere
version
• New standards
Assessment
Planning
Skills
Production
Review
results
Test
Development
Environment
Code
Migration
Unit Test
Runtime
Environment
Runtime
Migration
Test
Systems
Development
Environment
Runtime
Environment
18. 17
Runtime Environment
• Most likely will need to support
parallel development
• Migrate test systems iteratively
• Integration
• System test
• Performance
• Pre-Production
• Production
• Use the same migration process
throughout if possible
• Or at least before you do production
migration…
Assessment
Planning
Skills
Production
Review
results
Test
Development
Environment
Code
Migration
Unit Test
Runtime
Environment
Runtime
Migration
Test
Systems
Development
Environment
Runtime
Environment
19. 18
Development Environment
• Upgrades needed for (Rational) IDEs
• Progress iteratively, expand outward
• Can migrate the WAS configuration using
WAS configuration migration tools
• Assume good but not complete
application compatibility
• Assess apps, based on known issues
• If no changes required, perform standard
regression
Assessment
Planning
Skills
Production
Review
results
Test
Development
Environment
Code
Migration
Unit Test
Runtime
Environment
Runtime
Migration
Test
Systems
Development
Environment
Runtime
Environment
20. 19
Application Migration (Iterative)
• Minimize change
• Only make changes required to support
version migration
– Reduces complexity of planning, diagnosis
and debug - “Keep it Simple”
• Require application code to be dual-
compatible to support mixed version
clusters
• Test to the depth of test environment that
fits your comfort level
• Then Optimize and Enhance
• Java EE Spec migration
• New programming models
• Application upgrades
• Depreciations
• Iterate following your standard practices
Assessment
Planning
Skills
Production
Review
results
Test
Development
Environment
Application
Migration
Unit Test
Runtime
Environment
Runtime
Migration
Test
Systems
Development
Environment
Runtime
Environment
21. 20
Test/Production/Review
• Run your standard test processes
• Progress applications normally through
the test environments
• Ensure Performance is measured
• Differences exist between versions
• JDK changes may have occurred
• Have a rollback plan for production
• Practice on another system earlier in
the cycle
• Review the results of the Migration
• Update the plan for next time
Assessment
Planning
Skills
Production
Review
results
Test
Development
Environment
Code
Migration
Unit Test
Runtime
Environment
Runtime
Migration
Test
Systems
Development
Environment
Runtime
Environment
23. 22
Application changes can result from
• JRE version differences
• Java EE spec enforcements
• Java EE spec clarifications
• Deprecated APIs and features
• Removed APIs and features
• Behavior changes
24. 23
Application Migration
• Java Runtime compatibility (JRE)
• JREs focus on binary compatibility and are normally pretty good
• New APIs and behavior changes can cause migration work
• Java EE (JEE) compatibility
• Newer JEE versions intend to support older JEE versions
• But in some cases breaking clarifications do exist
• JEE supports incremental upgrade
– Modules within an application can be earlier versions
• In general WebSphere APIs very compatible
• Most interfaces after v5.0 are unchanged, some depreciated,
fewer removed
• However, no guarantee that applications will run unchanged
25. Tools for Developers
• Migration Toolkit
Free Eclipse-based source scanning
– WebSphere Version Migration
– Competitive Application Migration
– Liberty Tech Preview
– Tomcat Configuration Migration
• Migration Toolkit for Application Binaries (Tech Preview)
Free command-line application binary scanning
– Full profile to Liberty to Bluemix scenario
– Application Evaluation Report – introspect the application to see the
technologies used.
– Detailed Report - **NEW ** - File level information on migration issues
24
26. 25
Migration Toolkit – Source tools
• Application Migration tools
• Migrate WebSphere applications from older releases to
WebSphere Application Server v7.0, v8.0, v8.5.5,
Liberty profile and Bluemix
– Migrate applications from v5.1, v6.0, v6.1, v7.0 and v8.0
• Migrate From Oracle (WebLogic & Oracle AS), JBoss or
Tomcat to WebSphere Faster/Easier
– Migrate applications 2x as fast
– Migrate web services 3x as fast
• The tools programmatically scans customer applications
source code and identifies the changes required.
– In many cases the tool can make the application change
itself, for other cases it provides guidance on how to make
the change.
– Generate reports to assess the migration task.
Now easier than ever for developers to migrate your
applications to WebSphere Application Server v7.0, v8.0,
v8.5.5, Liberty, Bluemix
WebSphere Application
Server V8.5.5, V8, V7,
Liberty, Bluemix
WAS
V8.5.5,
V8, V7,
V6, V5.1
W
L
S
JBoss
AS
O
A
S
Tomcat
WAMT
27. 26
Migration Toolkit – Source Tools
• Delivered as Eclipse features
• Installs on eclipse versions 4.2 and 4.3
• Rational Application Developer Version 8.0.x, 8.5.5 and 9.0.x
• Compatible with WebSphere Application Server Developer Tools for Eclipse v8.5.5
• Based on Rational Software Analyzer technology
• Rules supporting migrating apps as far back as V5.1
• Focuses on required changes, not Java EE Spec Migration
• Free to Download
• The WebSphere Version to Version tool is available through Eclipse Marketplace
• All tools available at:
• https://developer.ibm.com/wasdev/downloads/#filter/sortby=relevance;q=toolkit
28. 27
Migration Toolkit Concepts
• Uses the concepts of rules and rule sets to organize migration issues
• Analyzes (scans) the application source to find code requiring
migration
• Provides results with direct navigation to the source code or the
deployment descriptor that needs to be updated
• Provides very detailed help on migration issues
(knowledge base for developers)
• Quick Fixes automatically change the source code where possible
• Generates reports to better estimate the scope of application changes
29. 28
Scan your applications
• Programming model differences between profile types
• WebSphere API differences between profile types
• App changes recommended when deploying to Cloud
App
http://wasdev.net/downloads
30. 29
Application Migration Rule Count
Scanned Files Rules Quick Fixes
Java 93 19
JSP 2 0
XML 10 1
Total 105 20
WebSphere Version 7.0 to Version 8.5.5 Migration
Java SE migration
Scanned Files Rules Quick Fixes
JRE 6 4 0
JRE 7 16 0
JRE 8 14 1
WebSphere Version 8.5.5 to Liberty/Bluemix
Scanned Files Rules Quick Fixes
Java 50/13 1/0
JSP 0/0 0
XML 26/3 5/0
File 4/0 0
Total 80/16 6/0
32. 31
Migration Toolkit – Binary Scanning
• Evaluates the binaries – EAR, WAR, JAR, class files, etc.
• Command line convenience
• No import to Eclipse required
• Run from a script
– Batch up all your applications for evaluation
• Text or HTML output
• Produces two report types
• Application Evaluation Report –
NEW 4Q14
• Detailed Analysis Report –
NEW 1Q15
• Useful for migration
assessment when moving to
Liberty profile
35. 34
Migration Case Studies
• WAS version migration for developers
• Migrate from other Application Servers
• Apache Tomcat
• JBoss
• Oracle AS
• WebLogic
• More Migration strategy and planning
• Detailed Questionnaire Examples
http://www.redbooks.ibm.com/abstracts/sg248048.html
37. 36
Administration
• Full WebSphere Profile
• Administration model consistent from V6
– Stable config model, some new added each release
– Consistent operations model, some new in V7
– Same app deploy capability, some validation improvements
• Scripting model consistent from V6
– Stable scripting strategy starting v5.0
– Small number of changes in some later versions
– Both JACL and Jython are supported
• Migration tooling consistent and enhanced each release
• Liberty Profile
• Simplified config model and app deploy
• Differences in admin model (JMX, Admin Center,
Collectives)
38. 37
Coexistence configuration for migration
HTTP
v8.0 v8.5v7.0v6.1
v6.1, v7.0, v8.0 and v8.5
• Cross version plug-in support
• Higher level Web Server plug-in can work to
multiple WebSphere versions
– The URI for a machine must be unique in the
routing rules for the plug-in
– Support for n-3 (v6.1,v7.0 and v8.0 for v8.5)
• Coexistence
• Different versions of WAS: same machine,
same LPAR, same time
– Requires port conflict resolution
– Support for n-3 (v6.1,v7.0 and v8.0 and v8.5)
WAS
39. 38
Interoperability
• Different versions of WebSphere can
communicate
• Support for applications that are
Secure, Transactional, EJB and
WLM-able
• Support for n-3
(v6.1,v7.0, v8.0 and v8.5)
v8.0
v8.5
v7.0
v6.1
40. 39
Mixed version cell support
ND
Node
Agent
ND
Node
Agent
v8.5 Deployment ManagerWAS Network
Deployment v8.5 Cell
ND
Node
Agent
ND v7.0 Nodes
ND v8.5 Nodes
v8.5 Cell can contain v6.1,v7.0,v8.0 & v8.5 nodes: for continued operation as well as staging of upgrades
Note – Precompile options are not available for application deploy to back level nodes
ND v8.0 Nodes
Business Value: Adopt newer infrastructure as your plans require, saving time and money
Support for existing infrastructure in new deployments
ND
Node
Agent
ND v6.1 Nodes
41. Tools for Administrators
WebSphere Application Server configuration migration tools
• Configuration Migration Tool (CMT) for distributed
• Move existing configurations between versions
• Within or across virtual or physical hardware
• Cross platform version migration support
• z/OS Migration Management Tool (zMMT) – for z/OS
–Creates jobs to perform the migration
• Command line tools for configuration migration – for
distributed and iSeries
40
42. 41
Migration Tooling – Local Migration
• Migrate on the same platform
• Command-line tools or migration wizard
Goal
V8 or V8.5.5
Migrated Server Profile
Target
Profile 1
Starting Point
Source
Profile 1
V6.x or V7.0
Server Profile
WASPreUpgrade
WASPostUpgrade
Migration
Backup
(snapshot)
Step 1
Step 2b
43. 42
V7.0
Server
on Linux
V8.5.5
Server
on Linux
V8.5.5
Server on
Windows
Migration
Backup
Directory
Migration
Backup
Directory
Migration
Backup
Directory
OR
Migration Tooling – Cross Machine Example
• Migrate to a different distributed platform (Linux x86 to Windows)
• Migrate to new hardware on same OS (Linux x86 to Linux x86)
• Command line only (-machineChange true)
WASPreUpgrade
WASPostUpgrade
WASPostUpgrade
44. Application deploy
• Applications are deployed “as-is” to the new release
• WASPostUpgrade -includeApps
• true – generate the install scripts and run them
• false – do not bring any applications forward
• script – generate the install scripts to be run manually later
– See the install_all_apps.jy script in the /migrationBackup snapshot
directory for details on how to manual deploy the applications
• –script gives greatest flexibility for moving application forward.
43
45. 44
Five Strategies for Migrating Network Deployment
1. Manual Side by Side
• Create a new cell and populate with tools or manually
• No runtime migration tools
2. In Place - Copy and replace the cell
• Recreates the exact existing configuration in new cell
• DMgr and nodes are migrated
3. In Place - Copy and replace the DMgr
• Recreates the exact existing configuration in new cell
• Add new nodes and move incrementally
4. In Place - Copy and coexist
• Recreates the exact existing configuration in new cell
• Modify the ports in the new cell and coexist
5. Side by Side - Fine Grained
• Create a new cell and incrementally copy configuration
• Uses an intermediate profile, runtime migration and
wsadmin tools
v8.5
Node
v8.5
Node
Old
Node
Old
Node
v8.5
Node
v8.5
Node
Old
Node
Old
Node
X
XX
Old
Node
Old
Node
v8.5
Node
v8.5
Node
v8.5
Node
v8.5
Node
Old
Node
Old
Node
Old
Node
v8.5
Node
v8.5
Node
Old
Node
46. 45
Runtime Migration Strategies
• Each of the five strategies have pros and cons
• There is no single best strategy
• Get all the technical details:
• Charts in reference section
• Knowledge Collection:
http://www-01.ibm.com/support/docview.wss?rs=180&uid=swg27008724#
• Learn at your pace: Get the Recorded Webcast
http://public.dhe.ibm.com/software/websphere/techexchange/2012_08_17_0013_WebSphere_
Application_Server_M.mov
47. Liberty profile – keeping it simple
• Architectural Goal: Zero migration for unchanged apps
Bring your config
Choice: Features limit runtime behavior change
Existing features remain unchanged eg. servlet-3.0
New feature versions contain updates, eg. servlet-3.1
No custom properties for behavior switching
Point to your existing JRE
Within supported software levels. Java 6 will not last forever
New Java EE features may require higher versions of Java
8.5.5.2
8.next
Your
configuration,
applications,
resources
WLP_USER_DIR
java -jar wlp-developers-runtime-8.5.5.2.jar
java -jar wlp-developers-runtime-8.next.jar
Spec updates often
force behavior
changes
48. Tools for Administrators when moving to Liberty
• Application Migration Toolkit
– Liberty Tech Preview
– New Application Binary Scanner
• Technology Report
• Detailed Report
• WebSphere Configuration Migration Toolkit
– Full profile Liberty as well as competitive server migration
47
49. Full profile to Liberty resource config migration
• Eclipse plugin, converts configuration for specific resources to
• server.xml for liberty
• wsadmin jython script for full profile
• Input for full profile source is WAS config properties file
• wsadmin -lang jython -c "AdminTask.extractConfigProperties(['-
propertiesFileName my.props'])”
• for application-related resources, not full topology migration
• Written by ISSW World-Wide WebSphere Competitive Migration
team
• used (proven) in customer engagements
WebSphere Configuration Migration Toolkit (WCMT)
https://developer.ibm.com/wasdev/downloads/#asset/tools-WebSphere_Configuration_Migration_Tool
http://www.ibm.com/developerworks/websphere/library/techarticles/1404_vines2/1404_vines2.html
48
50. 49
Considering IBM Bluemix?
• Learn More @ 1:00 Thursday !!
• AAI-2698: Migrating WebSphere Applications to IBM Bluemix
Platform-as-a-Service
• Mandalay Bay Reef Ballroom F
51. 50
Want more information on the Migration tools:
Attend the Deep Dive session
• Learn more about our tools
• WebSphere Application Server Migration Toolkit
– The new Migration Toolkit for Application Binaries (Tech Preview)
– Liberty Tech Preview
– Version to Version
– Competitive Tools
• Configuration Migration Tools
– Configuration Migration Management Tool (CMMT)
– z/OS Migration Management Tool (zMMT)
Learn More @ 2:30 Thursday !!
AAI-3489: Reduce your Migration Costs using
WebSphere Application Server Tools - A Deep Dive
Mandalay Bay Reef Ballroom F
53. 52
Summary
• Migration needs to be a pragmatic, well designed and
repeatable process
• WebSphere Application Server migration is becoming
easier!
• More tools
• More techniques
• Minimizing Application changes
54. 53
Enablement:
IBM Migration Knowledge collection
• This information and more is
available online!
• General planning with detailed
notes and WebSphere AppServer
version specific information
• Updated with timely information
• Google: “websphere application
server migration”
http://www-1.ibm.com/support/docview.wss?rs=180&uid=swg27008724
59. 58
Migrating from a Competitive Application Server?
Certain migrations
could include free
services available
• Migration
Assessment Report
• Workshops
• Proof of Concept
Contact your IBM rep
60. 59
References - Planning
• Supported hardware and software information
• http://www.ibm.com/software/webservers/appserv/was/network/requirements/?S_CMP=rnav
• http://publib.boulder.ibm.com/infocenter/prodguid/v1r0/clarity/index.html
• IBM Support Policies
• http://www-1.ibm.com/support/docview.wss?uid=swg21256700
• http://www-01.ibm.com/software/support/lifecycle/lc-policy.html
• http://www-01.ibm.com/common/ssi/cgi-
bin/ssialias?subtype=ca&infotype=an&appname=iSource&supplier=877&letternum=ENUSZP13-
0568
• Installation Manager and Managing Repositories
• http://www.ibm.com/developerworks/websphere/library/techarticles/1201_seelemann/1201_seelem
ann.html
• http://www.ibm.com/support/docview.wss?uid=swg27023967&aid=1
• http://www.ibm.com/developerworks/websphere/techjournal/1301_seelemann/1301_seelemann.ht
ml?ca=drs-
• The Ideal WebSphere Development Environment
• http://www.ibm.com/developerworks/websphere/techjournal/0312_beaton/beaton.html
• Web Server plug-in technotes and Merge tool
• http://www-1.ibm.com/support/docview.wss?uid=swg21160581
• http://www-01.ibm.com/support/docview.wss?uid=swg21139573
• http://www14.software.ibm.com/webapp/wsbroker/redirect?version=phil&product=was-base-
dist&topic=twsv_configsimplelb
61. 60
References - Planning
• WebSphere supported Specification levels and pointers to JEE specifications
• http://www14.software.ibm.com/webapp/wsbroker/redirect?version=phil&product=
was-nd-mp&topic=rovr_specs
• WebSphere AppServer API Deprecations, removals and stabilizations
• http://publib.boulder.ibm.com/infocenter/wasinfo/v8r0/topic/com.ibm.websphere.nd.
doc/info/ae/ae/rmig_deprecationlist.html
• WebSphere Application Server V8.5 Concepts, Planning, and Design Guide
• http://www14.software.ibm.com/webapp/wsbroker/redirect?version=phil&product=
was-nd-dist&topic=rmig_deprecationlist
• Migrating WebSphere Compute Grid or Feature Pack for Modern Batch
• http://www14.software.ibm.com/webapp/wsbroker/redirect?version=phil&product=
was-nd-dist&topic=tmig_computegrid_migrating_cg
• Webcast replay: WebSphere Application Server V61 for z/OS Exit Plan
• http://www.ibm.com/support/docview.wss?uid=swg27035994&myns=swgws&mynp
=OCSS7K4U&mync=E
• Changes in Default behavior
• http://www14.software.ibm.com/webapp/wsbroker/redirect?version=phil&product=
was-base-dist&topic=rmig_defaultvalue
62. 61
References - Training
• WebSphere Training and Technical Enablement
• http://www-01.ibm.com/software/websphere/education/
• IBM Education Assistant
• http://www.ibm.com/software/info/education/assistant/
• http://www-
01.ibm.com/support/knowledgecenter/websphere_iea/com.ibm.iea.was_v8/plugin_coverpage.dita
• What's new in WebSphere Application Server V8.5
• http://www.ibm.com/developerworks/websphere/techjournal/1206_alcott/1206_alcott.html
• What’s new in WebSphere Application Server v8.0
• http://www.ibm.com/developerworks/websphere/techjournal/1106_alcott/1106_alcott.html
• What's new in WebSphere Application Server v7.0
• http://www.ibm.com/developerworks/websphere/library/techarticles/0809_alcott/0809_alcott.html
• WebSphere Application Server V8.5.5 Technical Overview
• http://www.redbooks.ibm.com/redpapers/pdfs/redp4855.pdf
• WebSphere Application Server: New Features in V8.5.5
• http://www.redbooks.ibm.com/redpapers/abstracts/redp4870.html?Open
63. 62
References - Training
• Properties based configuration
• http://www.ibm.com/developerworks/websphere/techjournal/0904_chang/0904_chang.html
• http://pic.dhe.ibm.com/infocenter/wasinfo/v8r5/index.jsp?topic=/com.ibm.websphere.base.doc/ae/rx
ml_7propbasedconfig.html
• http://www.ibm.com/support/docview.wss?uid=swg27039420
• System administration in WebSphere Application Server V8.5, Part 1: An
overview of new administrative features and enhancements
• http://www.ibm.com/developerworks/websphere/techjournal/1206_cheng/1206_cheng.html
• System administration in WebSphere Application Server V8.5, Part 2:
Using the Centralized Installation Manager
• http://www.ibm.com/developerworks/websphere/techjournal/1206_wong/1206_wong.html
• System administration in WebSphere Application Server V8.5, Part 3: High
Performance Extensible Logging (HPEL)
• http://www.ibm.com/developerworks/websphere/techjournal/1208_bourne/1208_bourne.html
• System administration in WebSphere Application Server V8.5, Part 4:
Using pluggable SDK 7 to enable WebSphere Application Server for Java7
• http://www.ibm.com/developerworks/websphere/techjournal/1209_hall/1209_hall.html
64. 63
References - Configuration Migration
• IBM Techdocs Whitepapers on WAS Migration case studies, including
other IBM products
• http://www-03.ibm.com/support/techdocs/atsmastr.nsf/WebIndex/WP101455
• Migrating to Version 7.0 - zOS
• http://www-03.ibm.com/support/techdocs/atsmastr.nsf/WebIndex/WP101329
• WAS z/OS Migration Performance Study
• http://www.ibm.com/support/techdocs/atsmastr.nsf/WebIndex/WP101589
• Case study: Tuning WebSphere Application Server V7 and V8 for
performance
• http://www.ibm.com/developerworks/websphere/techjournal/0909_blythe/0909_blythe.html
• WebSphere Application Server V7 Migration Guide
• http://www.redbooks.ibm.com/redpieces/abstracts/redp4635.html
• WebSphere Application Server V8.5 Migration Guide
• http://www.redbooks.ibm.com/abstracts/sg248048.html
• Changing host names and moving profiles
• http://www.ibm.com/developerworks/websphere/techjournal/0905_webcon/0905_webcon.html
• Migrating cell configurations to new host machines
• http://www14.software.ibm.com/webapp/wsbroker/redirect?version=phil&product=was-nd-
dist&topic=tmig_migrate_remote_commandline
• Migration – Application Installation problems
• http://www-01.ibm.com/support/docview.wss?uid=swg27008724&aid=13
65. 64
References - Development
• Rational Application Developer Performance Tips
• https://www.ibm.com/developerworks/community/files/basic/anonymous/api/library/a82c60c3-d3d9-
4444-9f9f-63678cf12c17/document/b31c01f7-c08f-47c1-a492-1da2602520b4/media
• https://www.ibm.com/developerworks/community/wikis/form/anonymous/api/wiki/2fad2df2-9c68-
4aa3-abba-01e910211998/page/9615e26f-77b4-45d0-a8aa-bfeb64af1f20/attachment/884d71f7-
8c24-4f43-af40-829b0f850b01/media/radtipsv754.pdf
• WDT and WAS Application Server for Development
• WASdev.net
• http://www.ibm.com/developerworks/downloads/ws/wasdevelopers/
• JDK Compatibility
• JDK 8 - http://www.oracle.com/technetwork/java/javase/8-compatibility-guide-2156366.html
• JDK 7 - http://www.oracle.com/technetwork/java/javase/compatibility-417013.html
• JDK 6 - http://www.oracle.com/technetwork/java/javase/compatibility-137541.html
• J2EE class loading
• www.ibm.com/developerworks/websphere/library/techarticles/0112_deboer/deboer.html
• Migration from Apache SOAP to web services
• http://www14.software.ibm.com/webapp/wsbroker/redirect?version=phil&product=was-base-
dist&topic=twbs_migratewbs
• JavaServer Pages specific Web container custom properties
• http://www14.software.ibm.com/webapp/wsbroker/redirect?version=phil&product=was-nd-
mp&topic=rweb_jsp_custom_props
• JMS Listener to Message Driven Bean migration
• http://www14.software.ibm.com/webapp/wsbroker/redirect?version=phil&product=was-nd-
mp&topic=tmj_adm32
66. 65
References - Development
• JDK 5/6/7 Tuning
• http://www.ibm.com/support/docview.wss?uid=swg27013824
• Using Spring and Hibernate with WebSphere Application Server
• http://www.ibm.com/developerworks/websphere/techjournal/0609_alcott/0609_alcott.html
• WebSphere Application Server Migration Toolkit
• https://developer.ibm.com/wasdev/downloads/#filter/sortby=relevance;q=toolkit
• http://www.ibm.com/developerworks/websphere/downloads/migration_toolkit.html
• https://developer.ibm.com/wasdev/docs/migration-toolkit-application-binaries-tech-preview/
• http://www-
01.ibm.com/support/knowledgecenter/websphere_iea/com.ibm.iea.wasmt/plugin_coverpage.dita
• http://www.ibm.com/support/docview.wss?uid=swg27020784
• Using other web service engines in WAS
• http://www.ibm.com/developerworks/websphere/library/techarticles/1001_thaker/1001_thaker.html
• http://www14.software.ibm.com/webapp/wsbroker/redirect?version=phil&product=was-nd-
mp&topic=twbs_thirdparty
• JSF Migration
• http://www14.software.ibm.com/webapp/wsbroker/redirect?version=phil&product=was-nd-
mp&topic=cweb_jsfmigrate
• Best Practices for Integrating Open Source Software
• http://www-01.ibm.com/support/docview.wss?uid=swg21639407
67. 66
References – Liberty profile
• Moving to Liberty profile
• http://www.ibm.com/developerworks/websphere/library/techarticles/1404_vines1/1404_vines1.ht
ml
• http://www.ibm.com/developerworks/websphere/library/techarticles/1404_vines2/1404_vines2.ht
ml
• https://developer.ibm.com/wasdev/docs/video-moving-applications-cloud-websphere-full-profile/
• https://developer.ibm.com/wasdev/downloads/#asset/tools-
WebSphere_Configuration_Migration_Tool
• http://wasdev.net/repo
68. 67
References - Operations
• Introducing the Visual Configuration Explorer
• http://www.ibm.com/developerworks/websphere/techjournal/0710_supauth/0710_supauth.html
• http://www.ibm.com/developerworks/forums/forum.jspa?forumID=1139
• IBM Support Assistant Tools
• http://www.ibm.com/software/support/isa/isa40/tools.html
• Best Practices for Configuring and Managing Large WebSphere
Topologies
• http://www.ibm.com/developerworks/websphere/library/techarticles/0710_largetopologies/0710_l
argetopologies.html
• http://www-1.ibm.com/support/docview.wss?uid=swg27010606
• wsadmin Primer
• http://www.ibm.com/support/techdocs/atsmastr.nsf/WebIndex/WP101014
• Compressed reference setting for 64 bit installations
• http://publib.boulder.ibm.com/infocenter/javasdk/v6r0/index.jsp?topic=%2Fcom.ibm.java.doc.use
r.aix64.60%2Fuser%2Fgarbage_compressed_refs.html
• JACL to Jython conversion assistant
• http://www-1.ibm.com/support/docview.wss?rs=180&uid=swg24012144
70. 69
Side by Side
• Ignores the existing configuration
• Create a new cell and populate with administration
scripts or manually
• Best results with a comprehensive set of scripts or
tools for configuration automation
• Pros
• No dependencies on tooling
• Least risk assuming existing scripts are
comprehensive
• Can easily migrate applications singly
• Cons
• Comprehensive set of scripts and ongoing
maintenance of those scripts can be expensive
• Any required changes to these scripts must be done
before migrating
• Tuning of the old configuration is not carried forward
v8.5
Node
v8.5
Node
Old
Node
Old
Node
71. 70
In Place - Copy and replace Cell
• Use Runtime migration tools on DMgr
• Recreates the exact existing configuration in
the new cell
• Later migrate the existing nodes using the
runtime migration tools
• All applications on a managed node are
migrated at the same time
• Pros
• Does not require comprehensive set of scripts
• All configuration is moved forward
• Cons
• Dependency on using the runtime migration
tools
• Requires all applications on a node be ready to
migrate at the same time
• Limited value if you are refactoring your
topology
• Carries default values forward from the old cell
v8.5
Node
v8.5
Node
Old
Node
Old
Node
Old
Node
Old
Node
Old
Node
v8.5
Node
v8.5
Node
v8.5
Node
Old
Node
Old
Node
X
XX
72. 71
In Place - Copy and replace DMgr
• Use Runtime migration tools on DMgr
• Recreates the exact existing configuration in the
new cell
• Add new nodes
• Applications can be migrated singly when ready
• Remove old nodes when no longer needed
• Pros
• Does not require comprehensive set of scripts
• All configuration is moved forward
• Cell and cluster level configuration accessible by
older nodes
• Cons
• Dependency on using the runtime migration tools
• Limited value if you are refactoring your topology
• Carries default values forward from the old cell
Old
Node
Old
Node
v8.5
Node
v8.5
Node
Old
Node
Old
Node
v8.5
Node
v8.5
Node
X
Old
Node
Old
Node
Old
Node
Old
Node
73. 72
In Place - Copy and coexist
• Same steps as “Copy and replace Cell” except:
• Use the options of the runtime Migration tools to
not disable the DMgr
• Turn off the old DMgr (the federated nodes should
be able to continue running)
• Migrate all the nodes
• Modify the new cell to resolve port conflicts
• Start old DMgr, new DMgr and all nodes in the new
cell
• Clone to new release
• See Migration redpiece for example
• http://www.redbooks.ibm.com/redpieces/abstracts/
redp4635.html?Open
v8.5
Node
v8.5
Node
Old
Node
Old
Node
Old
Node
Old
Node
Old
Node
v8.5
Node
v8.5
Node
v8.5
Node
Old
Node
Old
Node
74. 73
Side by Side - Fine Grained
• Uses a combination of tools
• An intermediate profile
• The runtime migration tools
• Properties based configuration tool (PBC)
• Approach
• Migrate the existing data to an intermediate profile
• Extract portions of the configuration from that
profile
• Import them into the final DMgr profile using PBC
• See Migration redpiece for example
• http://www.redbooks.ibm.com/redpieces/abstracts/
redp4635.html?Open
Old
Node
v8.5
Node
v8.5
Node
Old
Node
76. 75
Migration impacts (worst case scenario)
Potential Impact areas v6.0 v6.1 v7.0 v8.0 v8.5.x
Java Runtime (v8.5 has JRE6
and 7)
n/a 6 2 n/a 0/20note
JEE - JSP 8 n/a 1 1 0
JEE - Servlet 5 n/a 0 1 0
JEE - Other 3 n/a 5 7 0
WAS Specific 1 6 0 4 0
3rd party packages 2 0 1 0 0
Development total 19 12 9 13 0/20
Administrative script 4 3 2 0 0
WAS directory structure 1 1 0 0 0
Other administrative 5 2 6 7 0
Total administrative 10 6 8 7 0
Total potential impact areas 29 18 17 20 0/20
Note: Java7 introduces a number of potentially breaking changes. “0” represents Java6
and “20” is for Java7. Not all breaking changes will impact all applications
77. 76
Changes in v8.5.5
• Full Profile
• No change in product configuration!
• No need to install in a new directory!
• No need to migrate configuration!
• Liberty Profile Changes
• Now Java EE 6 Web Profile Compliant
• Updating v8.5.0 installed images that have Liberty profile
– v8.5.0 image that has just Liberty profile
– Must install the new standalone Liberty offering
– Can then continue using the user data and server configurations currently used
by this original install
– v8.5.0 image that has combined Full and Liberty profiles
– User is advised that Liberty profile will be backed up.
– To obtain v8.5.5 Liberty and future service, install the standalone offering.
– Can then continue using the user data and server configurations currently used
by this original install.
– Full profile updates as normal.
78. 77
Changes in v8.5.0
• Administration changes
• Some new ports defined
• A number of minor default setting changes
– Information provided in the v8.5 InfoCenter
• Development changes
• Development tool changes
• Java7 upgrade – Java6 is the default
– Breaking changes: (AWT, Internationalization, IO, JAXP,
Language, Networking, Text and Utilities)
• JPA (2)
– Custom settings are provided to provide compatibility
• Liberty Profile Introduced
• Simplified configuration
• Programming model subset (webapp focused)
79. 78
Changes in v8.0
• Administration changes
• Installation changes
• Centralized Install Manager
• Install Factory alternative
• WebServer Plug-in installation and configuration
• Java Garbage collection and dump format changes
• Security default changes
• Other miscellaneous changes
• Development changes
• Development tool changes
• JEE 1.6
• WebSphere API changes
80. 79
Changes in v7.0
• Administration changes
• SessionInitiationProtocol(SIP) Migration Considerations
• zOS Migration tool
• Administration script required changes
• Port usage
• Security Migration considerations
• Mixed version considerations
• Development changes
• Development tool change
• JRE 6 impacts
• JEE 5 impacts
• WebSphere removed features
• Support for WebServices included in WAS
• Embedded WebServices implementation and conflicts with
existing applications
81. 80
Changes in v6.1
• Administration changes
• Migration and Feature Packs
• zOS Migration tool
• Administration script required changes
• Install response file format changes
• Port usage
• Profile directory structure
• New administrative tool IDE
• Migration tools and v6.1 Security model
• Development changes
• Development tool change
• JRE 5 impacts
• WebSphere changes and removed features
83. 82
Migration Project
App Owners - Develop a Wave Formula
Create Application Rating System
o Least Complex to Most Complex
o Least Critical to Most Critical
Separate Tracks
o Validated VS. Non-Validated
o Custom Built VS. Vendor Application
Factor in
o Core Technology Requirements (JSF, EJBs, JSP, Servlets, JAX-WS,
Spring, Hibernate, etc…)
o Dependencies - Applications that Must Migrate together
o Business Benefit (Application Enhancements Requested)
o Group into Tier3, Tier2 and Tier1 Type Applications
84. 83
Migration Project
Expectations
Many Applications will be easy (little or no changes)
Some Applications will be difficult (moderate to large amount of changes)
Some will be in-between
Consider these factors
Identify Candidates for “Decommissing” - save yourself some work
Enhance the Application Features
Correct Flaws
Port “As-Is” doing only what is required for migration
85. 84
Migration Project – Rank Your Applications
“Hypothetical” Ranking – Developing a Formula
87. 86
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89. Notices and Disclaimers (con’t)
Information concerning non-IBM products was obtained from the suppliers of those products, their published
announcements or other publicly available sources. IBM has not tested those products in connection with this
publication and cannot confirm the accuracy of 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.
IBM does not warrant the quality of any third-party products, or the ability of any such third-party products to
interoperate with IBM’s products. IBM EXPRESSLY DISCLAIMS ALL WARRANTIES, EXPRESSED OR IMPLIED,
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