EXPERT RESPONSE
WebSphere application servers have always been slightly picky about the
JDK/JVM they require. Support from IBM is also picky when you are using an
"unsupported" JDK with WebSphere. It is possible to have multiple versions
of the JDK on your machine with WebSphere using one JDK, Tomcat using
another and VisualAge using still another. This usually requires some
manual intervention on your part to modify the target JDK within the startup
script for one or more of these applications.
IBM does supply a JDK conversion assistant to help you to switch from one
vendor's JDK (version 1.2.2) implementation to another. The conversion
assistant guides you through the modifications required to allow WebSphere
to find and use the new JDK.
The following is a list of supported JDKs for various versions of WebSphere:
JDKs supported by WebSphere 4.1 Enterprise Edition:
Java 2 SDK - HP 1.3.0.2
Java 2 SDK - IBM 1.3 PTF 10w
Java 2 SDK - IBM (AS/400) 1.3.1
Java 2 SDK - Sun 1.3.0_04
JDKs supported by WebSphere 4.0.2 Advanced Edition
Java 2 SDK - HP 1.3.0.2
Java 2 SDK - IBM 1.3 PTF 10w
Java 2 SDK - IBM (AS/400) 1.3.1
Java 2 SDK - Sun 1.3.0_04
JDKs supported by WebSphere 3.6 Enterprise Edition:
Java 2 SDK - IBM 1.3 PTF 6
Java 2 SDK - IBM 1.3 PTF7
JDKs supported by WebSphere 3.5.6 Advanced Version
Java 2 SDK - HP 1.2.2.11
Java 2 SDK - IBM 1.2.2 SR 14w
Java 2 SDK - Sun 1.2.2_10
JDKs supported by WebSphere 3.5.x Enterprise Edition Version
Java 2 SDK - IBM 1.2.2 PTF 7
Java 2 SDK - IBM 1.2.2 SR 9
JDKs supported by WebSphere 3.5.5 Advanced Version
Java 2 SDK - HP 1.2.2 Fix level 08
Java 2 SDK - IBM 1.2.2
Java 2 SDK - IBM 1.2.2 SR 13a
Java 2 SDK - IBM 1.2.2 SR 13w
Java 2 SDK - Sun 1.2.2 PTF 9
JDKs supported by WebSphere 3.5 - 3.5.4 Standard or Advanced:
Java 2 SDK - IBM 1.2.2 PTF 7
Java 2 SDK - IBM 1.2.2 SR 9b
Java 2 SDK - IBM 1.2.2 SR 11
Java 2 SDK - IBM 1.2.2 SR 13a
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