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| Problem | What is the Java™ SDK upgrade policy for WebSphere® Application Server? | | Cause | Updating to the latest compatible Java SDK could help you resolve problems more quickly. | | Solution | The WebSphere Application Server Java SDK, commonly referred to as JDK, can be upgraded only to a fix release level of the same Java SDK version. In other words, all three digits must match.
For example, Java SDK 1.3.0 is not the same version as Java SDK 1.3.1. You cannot install Java SDK 1.3.1 on an Application Server that originally shipped with Java SDK 1.3.0.
In cases where a version of the Java SDK is no longer supported, such as Java SDK 1.3.0 that shipped with WebSphere Application Server V4.0.2, the Application Server must be upgraded to a compatible version before upgrading the Java SDK. Installing WebSphere Application Server fix pack 3 upgrades the Java SDK to 1.3.1.
List of WebSphere Application Server fix packs and the corresponding Java SDK versions
Policy Summary by WebSphere Application Server release:
WebSphere Application Server V3.5
V3.5 must be upgraded to at least Fix Pack 5 (V3.5.5) or higher to apply the latest 1.2.2 Java SDK.
WebSphere Application Server V4.0 V4.0 must be upgraded to at least Fix Pack 3 (V4.0.3) or higher to apply the latest 1.3.1 Java SDK.
Note: WebSphere Application Server V4.0, V4.0.1, and V4.0.2 shipped with Java SDK 1.3.0. Java SDK 1.3.0 is no longer supported and you must be at WebSphere Application Server V4.0.3 or above to apply the latest Java SDK 1.3.1 build.
WebSphere Application Server V5.0 Any V5.0 fix pack can upgrade to the latest Java SDK 1.3.1 service release packaged for WebSphere Application Server.
WebSphere Application Server V5.1
Any V5.1 fix pack can upgrade to the latest Java SDK 1.4.1 or 1.4.2 service release packaged for WebSphere Application Server.
Details of Java SDK Upgrade Policy
WebSphere Application Server leverages the Java SDK as a base component. This results in unique support issues, including:
- Matching Java SDK service releases to Application Server releases and fix packs
- Delivering updates and fixes associated with the Java SDK on any given Application Server release.
In an effort to resolve customer Java SDK situations as quickly as possible, WebSphere Application Server Support has done a quickest-path-to-resolution analysis, determining the most direct way to collect problem information.
In some cases, problem resolution might include finding shortcuts to resolve symptoms. One shortcut is an immediate upgrade to a newer compatible Java SDK service release, before gathering detailed problem determination data.
There are multiple advantages to performing an immediate Java SDK upgrade as a quicker path to resolution over a full Problem Determination (PD) process:
- There is a continuous stream of fixes going into the Java SDK. Many problems encountered by customers are resolved by these fixes.
- When a new problem is encountered, applying the latest Java SDK is a quick way to determine if related fixes change the symptoms or correct the problem.
- Many documented Java SDK fixes have common symptoms. Frequently, limited PD data does not isolate the problem to a single root cause.
These factors highlight the advantage of applying a newer Java SDK before working through a full PD cycle.
Java SDK and WebSphere Application Server software are updated frequently. To avoid compatibility issues for customers, WebSphere Application Server Support maintains this Java SDK Upgrade Policy.
Identifying compatibility limitations between WebSphere Application Server releases and Java SDK service releases that have not been tested together reduces risk.
Important: Using a Java SDK not specifically packaged with WebSphere Application Server and supplied by IBM®, or in violation of the Java SDK Upgrade Policy, is not supported by IBM WebSphere Application Server Support for Java SDK problems. | |
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Product categories: Software, Application Servers, Distributed Application & Web Servers, WebSphere Application Server, Java SDK Operating system(s): Multi-Platform Software version: 3.5, 4.0, 5.0, 5.1, 6.0 Software edition: Edition Independent Reference #: 1138332 IBM Group: Software Group Modified date: 2004-04-28
(C) Copyright IBM Corporation 2000, 2004. All Rights Reserved.
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