Difference between WebSphere and WebLogic

Difference between WebSphere and WebLogic

WebSphere versions 3.0, 4.0, and 5.1, and WebLogic 8.1 are J2EE compliant application servers. these application servers differ in their architecture, platform support, database connectivity, legacy system support, development options, J2EE technologies supported, and the manner in which Web components are deployed.

This article explains the differences between WebSphere 3.0 or later and WebLogic 8.1.

Comparing WebSphere 3.0 or later with WebLogic 8.1

WebSphere 3.0 and 4.0 are not fully compliant with J2EE 1.3. webSphere 5.1 and WebLogic 8.1 are fully compliant with J2EE 1.3. there are some differences between WebSphere 3.0 or later and WebLogic 8.1 In terms of architecture, platform support, database connectivity, legacy system support, development tools provided, J2EE technologies supported, and development and deployment of Web components.

Difference in architecture

WebSphere 3.0 or later enterprise platform consists of foundation and foundation extensions. foundation consists of application servers and products that allow integration of applications with processes. foundation extensions include development, presentation, and deployment tools that are used for building and managing e-business applications. the development tools provide an integrated environment for development of applications. the presentation tools include graphical or voice-based tools that are used to develop applications to personalize Web pages. the deployment tools include those that are used for development and deployment of applications.

WebLogic 8.1 enterprise platform consists of a WebLogic Server, WebLogic Workshop, WebLogic Integration, WebLogic Portal, liquid date for WebLogic, WebLogic tuxedo, and WebLogic jrockit. in addition, WebLogic 8.1 provides a security framework that supports varous security processes and mechanisms, such as auditing, authentication, authorization, Secure Socket Layer (SSL), and firewils.

Difference in platform support

WebSphere 3.0 or later and WebLogic 8.1 differ in the support they provide for varous platforms.

Lists the platforms supported by WebSphere 3.0 or later and WebLogic 8.1:

Platforms supported by WebSphere 3.0 or later and WebLogic 8.1

WebSphere 3.0	WebSphere 4.0	WebSphere 5.1	WebLogic 1, 8.1
Windows NT Server IBM AIX Sun Solaris	IBM AIX Sun Solaris Microsoft Windows NT, Microsoft Windows 2000, Microsoft Windows 2000 advance Server Linux OS/400 Novell NetWare Hewlett-Packard HP-UX	Windows NT/Windows 2000 HP-UX Linux OS/400 Z/OS Sun Solaris	Windows NT/Windows 2000 Sun Solaris Caldera openunix, Tru64 UNIX Linux Z/OS OpenVMS

Difference in Database Connectivity

Lists the databases supported by WebSphere 3.0 or later and WebLogic 8.1:

Databases supported by WebSphere 3.0 or later and WebLogic 8.1

WebSphere 3.0	WebSphere 4.0	WebSphere 5.1	WebLogic 1, 8.1
IBM DB2 Universal Database 5.2 Oracle 8.0.5	IBM DB2 Universal Database Oracle Microsoft SQL Server 7.0 Sybase Informix	IBM DB2 UDB 7.2 W Enterprise Edition/Workgroup Edition Oracle 8i Release 3 (8.1.7) Sybase Adaptive Server 12.0 Informix Dynamic Server 9.2.1/9.3 Ms SQL Server 7.0 SP2 Ms SQL Server 2000	Oracle 8.1.6/8.1.7 Ms SQL Server 6.0 or 6.5 SP3 Informix Online 7.2x/7.3/9.x Any DBMS that supports standard JDBC driver

Difference in legacy system support

WebSphere 3.0 or later converts legacy data into Extensible Markup Language (XML) Documents ents to communicate with the client. webLogic 8.1 uses Java adapter for mainframe (JAM) to communicate with the mainframe system. the jam gateway inside the Weblogic Application Server communicates with a Communication Resource Manager (CRM), which is present in the legacy systems.

Difference in development tools

WebSphere 3.0 or later and WebLogic 8.1 provide different tools for the development and deployment of J2EE applications.

The development tools for WebSphere 3.0 or later are:

• WebSphere Studio homepage Builder

• WebSphere Studio Application Developer

• WebSphere Studio site developer

• WebSphere Studio Enterprise developer

• Rational web developer for WebSphere Software

• Rational application developer for WebSphere Software

The development tools for WebLogic 8.1 are:

• WebLogic Workshop

• WebLogic Builder

• Ddinit

• Ejbgen

• WebLogic Administration Console

• Client deployer

• WebLogic deployer

• WebLogic tuxedo Connector

• XML editor

Difference in the J2EE technologies supported

Lists the versions of J2EE technologies supported by WebSphere and WebLogic:

J2EE technologies supported by WebSphere 3.0 or later and WebLogic 8.1

Technology	WebSphere 3.0	WebSphere 4.0	WebSphere 5.1	WebLogic 1, 8.1
JSP	0.91 and 1.0	1.1	1.2	1.2
Servlet	2.1	2.2	2.3	2.3
EJB	1.0	1.1	2.0	2.0
JDBC	The JDBC 2.0	The JDBC 2.0	The JDBC 2.0	The JDBC 2.0
JDK	J2sdks 1.2	J2sdks 1.3	J2sdks 1.4	J2sdks 1.4
JNDI	1.1	1.1	1.2	1.2

Difference in development and deployment of Web Components

Web components, such as JSPs and servlets, are developed and deployed differently in WebSphere 3.0, 4.0 or 5.1 as compared to WebLogic 8.1. the migration of servlets requires change of methods from WebSphere 3.0 and 4.0 to WebLogic 8.1. to migrate the JSPs, You need to perform the following tasks:

• Modify the JSP 0.91 version pages running on WebSphere 3.0 to run on WebLogic 8.1 due to the change of the bean invocation Method Used in version 1.2.

• Modify the JSP 1.0 version pages running on WebSphere 4.0 to run on WebLogic 8.1 due to the change of the bean invocation Method Used in version 1.2.

• JSP 1.1 version pages running on WebSphere 4.0 need no modification to run on WebLogic 8.1 but they will not support the JSP 1.1 version enhancements.

• Modify the database access tags provided by JSP 0.91 running on WebSphere 3.0 to make them compatible to run on WebLogic 8.1.

Difference in JSPs and servlets

WebSphere 3.0 supports JSP 0.91 and 1.0, and servlets 2.1. webLogic 8.1 supports JSP 1.1 or later, and servlets 2.3. in Servlets, the definition of methods in the httpsession class is different for WebSphere 3.0 and 4.0 as compared to WebLogic 8.1.

Lists the different methods of the httpsession class supported by WebSphere 3.0 or later and WebLogic 8.1:

Httpsession methods supported by WebSphere 3.0 or later and WebLogic 8.1

WebSphere 3.0/4.0	WebSphere 5.1/WebLogic 8.1
Getvalue () Getvaluenames () Removevalue () Setvalue ()	Getattribute () Getattributenames () Removeattribute () Setattribute ()

Difference in ejbs

WebSphere 3.0 and 4.0 and WebLogic 8.1 differ in the way they support the development and deployment of ejbs. webSphere 3.0 and 4.0 support EJB 1.0 and 1.1. webLogic 8.1 supports EJB 2.0. when migrating from WebSphere 3.0 or 4.0 to WebLogic 8.1, You need to modify the source code and the deployment descriptors. the formats of deployment descriptors used in WebSphere 3.0 or later and WebLogic 8.1 are binary and XML.