WebSphere® eXtreme Scale requires Java™ SE 6, or Java SE 7. In general, newer versions of Java SE have better functionality and performance.
IBM Runtime Environment, Java Technology Edition Version 6 , and Version 7 are supported for general use with the product. Version 6 Service Release 9 Fix Pack 2 is a fully supported JRE that is installed as a part of the stand-alone WebSphere eXtreme Scale and WebSphere eXtreme Scale Client installations in the wxs_install_root/java directory and is available to be used by both clients and servers. If you are installing WebSphere eXtreme Scale within WebSphere Application Server, you can use the JRE that is included in the WebSphere Application Server installation. For the web console, you must use IBM Runtime Environment, Java Technology Edition Version 6 Service Release 7 and later service releases only.
WebSphere eXtreme Scale takes advantage of Version 6 , and Version 7 functionality as it becomes available. Generally, newer versions of the Java Development Kit (JDK) and Java SE have better performance and functionality.
For more information, see Supported software.Feature | Supported in Java SE 5 and later service releases Note: Java SE 5
is not supported in WebSphere eXtreme Scale Version
8.6
|
Supported in Java SE Version 6 , Version 7 and later service releases |
---|---|---|
EntityManager API annotations (Optional: You can also use XML files) | X | X |
Java Persistence API (JPA): JPA loader, JPA client loader, and JPA time-based updater | X | X |
Memory-based eviction (uses MemoryPoolMXBean) | X | X |
Instrumentation agents:
|
X | X |
Web console for monitoring | X |
You need to use the JDK upgrade process that is made available by WebSphere Application Server. For more information, see http://www-304.ibm.com/support/docview.wss?uid=swg21427178.
You can use any level of JDK that is supported by WebSphere Application Server, for the supported version of WebSphere Application Server.