Migrating application programming interfaces (APIs) and specifications involves moving to the current Java component level as well as to other technologies that WebSphere Application Server Version 6.1 supports. If your existing applications currently support different specification levels than are supported by this version of the product, it is likely that you must update at least some aspects of the applications to comply with the new specifications.
In many cases, IBM provides additional features and customization options that extend the specification level even further. If your existing applications use IBM extensions from earlier product versions, it might be necessary for you to perform mandatory or optional migration to use the same kinds of extensions in Version 6.1.
Functional area | Support in Version 5.0.x | Support in Version 5.1 | Support in Version 6.0.x | Support in Version 6.1.x | Migration details |
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Enterprise JavaBeans (EJB) | EJB 2.0 | EJB 2.0 | EJB 2.1 | EJB 2.1 | Full support for EJB 2.0 and 2.1 is provided. |
Java Connector Architecture (JCA) | JCA 1.0 | JCA 1.0 | JCA 1.5 | JCA 1.5 | Java 2 Connector support was completed in Version 6.0. Some changes might be necessary to take full advantage of this support. |
Java Database Connectivity (JDBC) API | JDBC 2.0 | JDBC 2.0 | JDBC 3.0 | JDBC 3.0 | Many applications can run unchanged in Version 6.1 although some changes might be required or recommended. |
JavaServer Pages (JSP) | JSP 1.2 | JSP 1.2 | JSP 2.0 | JSP 2.0 | For more information, see the "Web applications" article in the information center. |
Security | IBM security | IBM security | IBM security | IBM security | Changes might be required due to J2EE security. |
Java Servlets | Servlet 2.3 | Servlet 2.3 | Servlet 2.4 | Servlet 2.4 | Many Servlet 2.3 and 2.4 applications can run unchanged in Version 6.1 although changes might be required or recommended. |
Sessions | IBM sessions | IBM sessions | IBM sessions | IBM sessions | Many applications can run unchanged in Version 6.1 although changes might be required or recommended. |
Transactions | IBM transactions | IBM transactions | IBM transactions | IBM transactions | There was a change in the import statement in Version 6.0.x. Also, one datasource connection cannot be used across multiple user transactions. |
Web services | Apache SOAP 2.3 in Version 5.0 and 5.0.1; Web Services for J2EE 1.1 in Version 5.0.2 | Web Services for J2EE 1.1 | Web Services for J2EE 1.1 | Web Services for J2EE 1.1 | The Apache SOAP Web services support provided in WebSphere Application Server Version 5.0 and 5.0.1 was deprecated in Version 5.0.2 and is not supported in Version 6.1. Applications that are using this SOAP implementation should migrate to Web Services for J2EE. |
XML parser | XML4J 2.0.x | XML4J 4.0.6 | XML4J 4.3.x | XML4J 4.4.x | Changes to move to the supported API XML4J Version 4.4.x level are required. |
Recompilation is required to migrate a Version 5.x XML application to the Version 6.x level. | |||||
XML transformer | XSLT4J 2.5.4 | XSLT4J 2.5.4 | XSLT4J 2.6.x | XSLT4J 2.7.x | Changes are required to move to the supported XSLT4J 2.7.x transformer levels. |