What is new in Version 4.0.x

The table summarizes features that have changed in Version 4.0, with respect to earlier versions. See also the article about transitioning to Version 4.0.

Previous function Version 4.0.x function
Policy-based authorization J2EE roles-based authorization
Web resource protection (HTML, CGI served by an external Web Server product) J2EE Web application (.war file) protected by WebSeal of the IBM policy director product
JavaServer Pages (JSP) V0.91 JavaServer Pages (JSP) V1.1 (JSP V1.0 spec compatible)
Support for EJB V1.0 Support for EJB V1.1
Servlet 2.1 Servlet 2.2
ServiceInitializer interface CustomService Support
Connection Manager V2.0 WebSphere Connection pooling
UNIX native install Java-based install including "silent" installation
OSE Remote Support for remote request invocation HTTP Transport Support. See also: transport administration
Servlet Redirector Support for remote request invocation HTTP Transport Support. See also: transport administration
com.ibm.ejs.ns.jndi.CNInitialContextFactory (1) com.ibm.websphere.naming.WsnInitialContextFactory
XML parser XML4J V2.0.15 XML parser XML4J V3.1.1
Private Enterprise Performance Monitoring (EPM) APIs (2) Performance Monitoring Interface (PMI) APIs
Support for .servlet (1) Servlet Extensions (bundled in the .war file)

(1) Supported for this release, new function is available now and going forward in follow-on releases.

(2) Limited availability and not supported in prior release, replacement is fully supported.

Also, InstantDB is a light-weight database provided for use by WebSphere samples only. Use of InstantDB for creation and deployment of CMP beans or persistence is not supported.