partner webcast - migration to weblogic server 11g

Migrate to Oracle WebLogic Server 11g

Lukasz Romaszewski

ISV Migration Consultant

Oracle

ISV Migration Center Team

• Who we Are ISV Migration Center Team is a team of senior technical consultants

based in Eastern and Central Europe and represents Oracle's technical investment

for partners.

• Mission Statement Enable partners to rapidly and successfully adopt and

implement Oracle latest technology

• What do we Offer Whether you are selling Oracle technology, building business

solutions, including hosted Internet solutions or providing system integration and

implementation services for Oracle technology, IMC Team can help you succeed.

• How can we assist We offer a wide range of free services for partners such as

one2one assistance, webinars, seminars and hands-on workshops.

For more information, visit the IMC website.

Contact: Ruxandra Radulescu, [email protected]

ISV Migration Center Manager, Eastern & Central Europe and CIS

http://www.oracle.com/partners/en/most-popular-resources/027930

http://www.oracle.com/partners/en/most-popular-resources/027930

Agenda

• Introduction to the Oracle WebLogic Server 11g

• Migration Process overview

• Migrating from iAS 10g• SmartUpgrade utility introduction

• SmartUpgrade Demo

• Migrating from other JEE application servers• Understanding potential caveats

• Using WebLogic classloader mechanism to isolate application

• Shared libraries overview

• Migrating Oracle Fusion Middleware components (Forms&Reports,

ADF, SOA etc)

• Summary

• Q&A

Oracle Fusion Middleware

Application Server, TP – Monitor, Java VM, Grid

Oracle Fusion MiddlewareRuns on the WebLogic Suite

Cost, Power, Hardware Efficient

Risk-free Scale-up and Scale-out

Higher performance and reliability

Coherence EE

JRockit Real Time

WebLogic Server

Java EE: Reliability, Availability, Scalability & Performance

High Performance, Reliable, Scale Out for Java, C++ and .NET

High Performance JVM with Extreme Low Latency

WebLogic Suite

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Java EE/ISVApps

SOA

Suite

WebCenterSuite

Content

Management

Suite

Identity

Management

Suite

Business

Intelligence

Suite

7

WebLogic Server Java EE 5.0 and Java SE 6.0

• Standards Compliant• Certified JEE 5.0 Compatible

• Latest version: JPA 2.0 & JSF 2.0 compliant

• High Performance

• Advanced Security

• Enterprise Messaging

• Web Services

• Integrated Operations & Administration

• Integrated, Productive Development Tools

• Open Source Certified√Java EE Management 1.1

√Java EE Deployment 1.2

√JMX 1.2

√JTA 1.1

√JCA 1.5

√JNDI 1.2

√JMS 1.1

√JAX-WS 2.1

√EJB 3.0

√Servlet 2.5

√JSF 1.2, 2.0

√JSP 2.1

√JDBC 4.0 √

5.0Java EE

6.0Java SE

Java Standard Support

8

WebLogic Server InfrastructureJava EE 5, Persistence, Messaging and Web Services

Middleware Administration Server

WebLogic Kernel – Reliability, Availability, Scalability, Performance

WebLogic Server

Oracle Fusion Middleware and Oracle Applications

EJBBusiness

LogicPOJO

JSF/ServletWeb 2.0

JMSMessaging

JCA

Connectivity

WebServices

ConnectionPooling

PersistenceInfrastructureTransactions

Protocol

HandlingSecurity

WorkloadManagement

IdentityManagement

Suite

BusinessIntelligence

Suite

ContentManagement

Suite

SOASuite

WebCenterSuite

Java EE/ISVApps

WebLogic JMS ExtensionsDesigned to Scale to the Most Complex SOA Integrations

• Unit of Order• Messages tagged with same Unit of Order

(UOO) are processed in order

• Stronger ordering semantics than the JMS specification

• Unit of Work• Messages are grouped with a group

identifier

• Messages at final destination become available only when entire group arrives

• Store and Forward Messaging

• Store messages on local server and forward to remote server when available

• Store and forward for clients to server and server to server

• Distributed Destinations• All queues and topics in a cluster appear

as a single logical destination to clients

• Provides high availability and scalability; parallel processing and load balancing

1 2 3 4 5 6 7 8 9

MDB 1 MDB 2 MDB 3

Messages red and grey have separate UOO

Message 3/4 not processed until 1/2 processed

Producer 2

1

3 MDB 2

MDB 1

MDB 323 1

WebLogicForward when

Target Available

WebLogic

JMS ServerJMS Server

WebLogic Cluster

JMS Server JMS Server

JMS Server JMS Server

Client

Logical

Destination

Running on the World’s Fastest

Java VM

• Complete implementation of Java

• 100% compatible with the Java

SE and ”bug compatible” with the

Sun Java implementation

• Underpins Oracle Fusion

Middleware product stack

• One-stop shop for support issues

• Optimized stack

• Architected and optimized for

server-side Java

• High Performance

• Typical benefit is ~20% over Sun

Java VM based on benchmarking

• Customer feedback & surveys

* Oracle JRockit has been used for all world record SPECjbb2005 publications since Q2 2006. Best results based on Sun, JRockit and IBM as of September 8, 2008 are (bops/bops per JVM): Sun Fire E25K (2105264/29240), SGI Altix 4700 (5180451/80945), IBM Power 595 (3435485/107359).

For full details see http://wws.spec.org. SPEC and SPECjbb2005 are trademarks of Standard Performance Evaluation Corporation.

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150000

200000

250000

2P Opteron 2220 4P Opteron 885 2P Intel X5355

SP

EC

jbb

2005 b

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Sun JVM

JRockit JVM

Response times (DC1)

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JRockit Sun

http://wws.spec.org/

With Near Zero Application Pause TimesJRockit Real Time

• Guaranteed maximum response times

• Java EE applications consistently under 100ms pause times

• Java SE tuned can be single-digit ms pause times

• Deterministic QoS under heavy load

• No code re-writes

• Remove weeks of tuning with simple declarative setting

• Deterministic setting

• Pause time target

Traditional Java VM – Stop the World Pauses

JRockit - < 10 ms Pause

Application Development FrameworkMVC Development Framework

• Device & Browser

Adaptation

• JSF Components

• Ajax & DHTML

• Flash

• JSF Page Flow

• JSR 227 Data Binding

• O-R Mapping

• EJB 3, JPA

Device View Controller Model

WebLogic Server Diagnostics

• WebLogic Diagnostics Framework

• Built into the server

• Real time diagnostisics for administrators

• Generate diagnostics dumps when thresholds exceeded

• Rich client-side UI (JFC/Swing)

• JRockit Mission Control• JVM diagnostics for JRockit JVM

• Targeted at production environments for developers

• Application Diagnostics for Java

• Diagnostics for non-JRockit JVMs

• Targeted at production environments for developers and administrators

Oracle Coherence Data Grid

• Provides a reliable data tier with a

single, consistent view of data

• Independent of yet integrated with

database and application server

• Enables dynamic data capacity

including fault tolerance and load

balancing

• Ensures that data capacity scales

with processing capacity

Data Services

MainframesDatabases

Enterprise Applications

Real Time Clients

Web services

Oracle CoherenceData Grid

Web services

Scaling WebLogic with CoherenceArbritrary Clients – Java, .NET, C++

• C++, .NET, Word, Excel, Visual Basic …

Coherence (Java)

Named Cache

Coherence (Java)

Named Cache

Coherence (Java)

Named Cache

Coherence (Java)

Named Cache

WebLogic Machines

WebLogic Cluster

Managed WLS

Application

Coherence Client

Managed WLS

Application

Coherence Client

App Machines

Java Applications

Java/JEE Container

Application

Coherence Client

Cache Store Cache Store Cache Store Cache Store

App Machines

Applications

.NET, C++

Application

Coherence Extend

Synchronous/AsynchronousSynchronous/Asynchronous

Coherence (Java)

Named Cache

Cluster Service

Cache Store

Agenda









ADF, SOA etc)

• Summary

• Q&A

Migration To Oracle WebLogic Server 11g

• First make sure you understand the WebLogic

Server architecture and topology

• Analyze your current installation and create

target WebLogic environment (domain(s),

instances, clusters, datasources etc.)

• Migrate your application

• Deploy the application on WebLogic Server

• Test, tune, make necessary adjustments...

Oracle WebLogic Server 11g Topology

Admin Server

Managed Servers

config.xml

Admin Console

Some important facts about WebLogic

topology...

• A Weblogic Server instance is always part of a Weblogic Server

Domain (no standalone instances)

• A Weblogic Server Domain is managed, configured, and

monitored by an Administration Server

• A Weblogic Server installation can be used to configure multiple

domains

• A Weblogic Server instance always runs as a single Java VM

process

• A Weblogic Server instance by default uses only one single port

(7001) for all type of requests

• A Weblogic Server instance does not support AJP, only pure

HTTP

Agenda









ADF, SOA etc)

• Summary

• Q&A

Oracle Strategy for custom Java EE

Applications

• Comprehensive Documentation

• OC4J to WLS Upgrade White Paper – Available under NDA

• Upgrade Guide for Java EE – With OFM 11gR1 release

• WebLogic SmartUpgrade

• Enables OC4J customers to systematically upgrade their

custom Java EE applications to WebLogic Server

• Professional Services Offerings

• ISV Migration Center

• Oracle Consulting

• Oracle Partners

http://ias.us.oracle.com/pls/portal/url/ITEM/63F4C02186F611D5E044080020E8C187

OC4J Features available in WebLogicJava Required Files

Security Diagnostics MDS TopLink ADF JMX Framewrk…

Java Required Files

WebLogic Server/WebSphere/JBoss

Oracle Fusion Middleware and Oracle Applications

Identity

Management

Suite

Business

Intelligence

Suite

Content

Management

Suite

SOA

Suite

WebCenterSuite

Java EE/ISVApps

Understand OC4J and

WebLogic Server

Conceptual Differences

Project Planning Project Development Project Verification and

Rollout

Assess Required

Adjustments to

Administrative Processes

Upgrade Application

Create Target Development

Environment

Upgrade Application Clients

Create Target Quality

Assurance Environment

Create Target Staging and

Production Environments

Custom Java EE Application Upgrade

Oracle Documentation

WebLogic SmartUpgrade

OC4J vs WebLogic - Topology Comparison

Agenda









ADF, SOA etc)

• Summary

• Q&A

Application Artifacts

WebLogic SmartUpgrade Design

Container

Configuration

JDeveloper

Interface

- Enhanced

Findings

Management

Analysis Engine

Input To

Uses

PDD

Analysis

Code

Analysis

- JSP

- Java

Container

Config.

Analysis

Generates

PDD

Rules

Code

Rules

Container

Config.

Rules

Knowledge Base

WebLogic PDDs

Generates

JDev

Project

Command

Line Interface

Report

- Findings

- Scoping Metrics

JDev

Project

JAR, WAR,

or EAR

Source

Directory

OC4J JEE

Instances

WebLogic SmartUpgrade MethodologyApplication Level

1. (Re-) Run findings report

2. Compare metrics against previous runs

track to project benchmarks

3. Analyze findings

4. Archive findings for

comparison afterchanges applied

6. Take action onnon-automated

findings andupdate project

5 Accept findingscode/PDD/script

generation

Iterativeupgrade

methodologymanaged

by upgrademetrics

OC4J Application & OC4J Container

Configuration

WebLogic Applicationand WebLogic Configuration

WebLogic SmartUpgrade Knowledge

Base - Categories

• api

– Application code is importing APIs which fall within any

of the following categories

• Public Oracle APIs

• Private Oracle APIs

• Known 3rd Party APIs

• classloading, cluster, data-source, ejb, jca, jms,

jmx, jndi, jsp, jta, rmi, security, web, web-services

– Application and OC4J instance configuration targeted

knowledge

SmartUpgrade JDeveloper Interface

Agenda









ADF, SOA etc)

• Summary

• Q&A

SmartUpgrade Demo

Agenda









ADF, SOA etc)

• Summary

• Q&A

Migrating JEE application to WebLogic

• Analize your application• uses EJBs, what version?

• uses JMS, MDBs?

• uses third-party libraries (e.g. Hibernate, Spring, etc.)?

• uses vendor-specific APIs (e.g. JBoss Cache)?

• Create WebLogic-specific deployment

descriptors:• weblogic.xml

• weblogic-ejb-jar.xml

• weblogic-ra.xml

• weblogic-application.xml

• Try deploying your application...

Agenda









ADF, SOA etc)

• Summary

• Q&A

Migrating JEE application to WebLogicthings to remember

• Always make EAR archive – you gain much

more configuration options

• Identify any third-party libraries and package

them into the EAR archive (/lib or /APP-

INF/lib)...

• ... or deploy them as shared libraries and

reference from your application

• Set filtering classloader to isolate your

application classes (solves most of the

ClassNotFoundException problems)

Migrating JEE application to WebLogicthings to remember cont.

• If you encounter NullPointerException related

to getServletContext().getRealPath(<resource>)

set the following option:• <Web module>.war

• WEB-INF

• weblogic.xml

<container-descriptor>

<show-archived-real-path-enabled>true</show-archived-real-path-enabled>

</container-descriptor>

Agenda









ADF, SOA etc)

• Summary

• Q&A

How Java loads classes

Is Class loaded?

Ask ParentClassloader

Check my classpath

Class Loading in JEE

• Applications e.g. .ear’s run each have their own Class

Loaders which are usually children of the System

Class Loaders

• Closely related to deployment architecture

• Why? Among the many reasons:

• Needed to support dynamic redeployment

• Application isolation e.g. different version of Log4J in

app1.ear and app2.ear

Example of classloader hierarchy in

WebLogic Server

System Class Loader

WebLogic Server

App1

myejb1.jar myeb2.jar

mywar1.war

mywar2.war

App2

myejb3.jar

mywar3.war

Module

Loader

Loads classes in EARs and any libraries

referenced by the EAR

lib/*.jar,

APP-INF/classes/**.class,

APP-INF/lib/*.jar

MANIFEST classpath

Does not load classes. Prevents classes from

being loaded from system if they match the filter-list

Module

Loader

Module

Loader ...

Application

(EAR application & EAR library classes )

Filtering

(filter-list barrier)

JSP JSP JSP

WEB-INF/classes/**.class,

WEB-INF/lib/*.jar

MANIFEST Classpath

Each JSP is loaded in its own classloader to enable

refresh

All tag files are loaded in their own classloader to

enable refresh

Web Application

(webapp & webapp-library classes )

Tag

(tag files – WEB-INF/tags/*.tag etc.)

Filtering Classloader

• Load classes from application first (changes

the delegation)

• Works as a barrier.

• Does not load classes itself.

• prefer-application-packages can be

configured at the application level.

• Can be used in scenarios where application

needs to use a different version of a

framework already bundled with the server

(e.g. log4j, spring, xml parsers etc)

Filtering Classloader - configuration

• <Application archive>.ear• META-INF

• application.xml

• weblogic-application.xml:

<prefer-application-packages>

<package-name>org.apache.log4j.*</package-name>

<package-name>org.aspectj.*</package-name>

<package-name>org.springframework.*</package-name>

<package-name>org.apache.commons.*</package-name>

<package-name>antlr.*</package-name>

</prefer-application-packages>

Agenda









ADF, SOA etc)

• Summary

• Q&A

Now for Some Complexity…

• Shared Libraries used extensively by Oracle

Applications

• JRF, ADF, APPLCORE, etc

• Reuse Classpath definitions and jar files

• Includes a version scheme

• E.g. Log4J 1.0.4

• Applications explicitly declare a dependency on shared

libraries

• Understanding Shared Libraries is critical to avoiding

Class Loader related issues

Major Differences Between WLS and

OC4J Shared Libraries

• WLS does not offer a hierarchical deployment model

• OC4J Shared Libraries run in their OWN Class Loaders

• Reduced footprint

• Only JARs supported

• Classes in Shared Libraries resolved via search policy

• WLS Shared Libraries EXPORTS the classpath to the

importing application

• Supports .ear, .wars and .jars

• Merges Deployment Descriptors into the importing

application

• Scope is controlled by the scope of the reference

• weblogic-application.xml vs weblogic.xml

Application shared libraries

my-web-1.war

my-ejb-1.jar

my-web-3.war

App-1.ear

my-web-2.war

my-ejb-2.jar

App-2.ear

my-web-1.war

my-ejb-1.jar

App-1.ear

my-web-3.war

my-web-2.war

my-ejb-2.jar

App-2.ear

my-web-3.war

App-lib.ear

Deployment view

Runtime view

Webapp shared libraries

WEB-INF/web.xml

WEB-INF/lib/x.jar

foo.jsp

bar.jsp

webapp-1.war

WEB-INF/web.xml

WEB-INF/lib/y.jar

a.jsp

b.html

webapp-lib.war

WEB-INF/web.xml*

WEB-INF/lib/x.jar

WEB-INF/lib/y.jar

foo.jsp

bar.jsp

a.jsp

b.html

webapp-1.war

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Jar libraries

my-web-1.war

my-ejb-1.jar

library.jar

App-1.ear

my-web-2.war

• Jar files and Jar libraries can be referenced from

applications (EAR, WAR, JAR) via MANIFEST classpath or

descriptors.

Shared library - configuration

• <Application archive>.ear• META-INF

• application.xml

• weblogic-application.xml:

...<library-ref>

<library-name>adf.oracle.domain</library-name>

<specification-version>11.1.1.2</specification-version>

</library-ref>

...

Agenda









ADF, SOA etc)

• Summary

• Q&A

Oracle FMW Upgrade Tools

Upgrade Assistant forSOA, IDM, Forms, Reports, Discoverer, and Portal Environment Upgrades

WebLogic SmartUpgradefor Upgrade of OC4J Java Applications and Environments to WebLogic Server

JDeveloper Upgrade Wizards forSOA, WebCenter, and ADF Application Upgrades

Questions & Answers

[email protected]

[email protected]

Please don’t hesitate to contact me

or Ruxandra Radulescu for any questions

regarding migration projects

mailto:[email protected]



partner webcast - migration to weblogic server 11g

Technology

oracle weblogic server

weblogic server java

java eejdbc

java se5

java standardsupport6

oracle technology

oracle jrockit

java ee deployment