Before you begin
Installation automatically configures IBM WebSphere Application Server, Version 6 and all other bundled products. There is no need for additional configuration if you did not migrate from an earlier version.Why and when to perform this task
If you migrate an installation of WebSphere Application Server, Version 4.0.x, there are some items to review before considering your environment fully configured.
Steps for this task
Global security that uses LTPA authentication in Version 4.0.x is migrated to the base WebSphere Application Server product. However, although global security was enabled in Version 4.0.x, it is disabled during migration to Version 6.
Version 6 does not support JSP 0.91 objects. The migration tools do not migrate JSP objects configured to run as JSP 0.91 objects. The migration tools do, however, recognize the objects in the output and log them. Version 6 runs JSP 1.0 and 1.1 objects as JSP 1.2 objects, which is its only supported level.
A Version 4.0.x repository can contain more than one node name and its associated children. The WASPostUpgrade tool processes only those objects and children that match the migrating node. This determination is made by checking the names of nodes in configuration files with fully qualified and non-qualified network names of the migrating machine.
J2EE applications might exist on the client, if the client has client JAR files with J2EE resources.
JAXP defines a pluggability mechanism for a SAX and DOM parser via javax.xml.parsers APIs. Transformers are pluggable via javax.xml.transform APIs.
The IBM SDK 1.4.1 bundles in Version 6 include an XML4J 4.2.2 parser and an XSLT4J 2.5.4 transformer.. To use a different implementation of JAXP in an application, package the parser and transformer in the application and change the class loader delegation to PARENT_LAST on the application or Web module.
It is recommended that applications do not use the parser or transformer implementation API directly, but that the applications use the JAXP API.
You can change an application to remove its dependency on the API in a previous version of the parser or the transformer from an earlier version of WebSphere Application Server. Package the JAR files in the application and set the classloader delegation mode to PARENT_LAST.
You must only recompile a Version 4.0.x XML application to migrate it to the Version 6 level.
Version 6 applications use the XML4J 4.2.2 parser and the XSLT4J 2.5.4 transformer.
If you have used a smaller heap size in the past, you can use the default heap size, which is now 50.
Result
Now you are finished with pre-test configuration. You might have to fine tune your WebSphere Application Server environment as you test it. Test all redeployed applications before moving them into production.What to do next
Return to Installing WebSphere Application Server to continue.Related tasks
Migrating product configurations