JDK versions

EAServer requires version 1.3.1 of the Java Development Kit (JDK) from Sun Microsystems. You can optionally run servers with JDK 1.4.1 instead. By default, JDK 1.3.1 and the optional JDK versions that you select are installed with EAServer. You can also configure the installation to use an existing version, as long as it is of the required patch level as listed in Table 1-2.

Table 1-2: JDK versions and required patch levels

JDK version

Patch level

Notes

1.3.1

build 1.3.1, J2RE 1.3.1 ca131-20030630a

This version is required to run Jaguar Manager, jagtool, and other tools. It is also the default VM used to run application servers.

1.4.1

build 1.4.1 J2RE 1.4.1 ca141-20030703a

Supported on AIX 5.1 and above. Not supported on earlier AIX versions. This JDK can optionally be used to run servers.

NoteIBM JDK versions do not include Hotspot VM, and support only the Classic VM.

To verify the version and patch level, change to the bin directory of the JDK installation and run the following command:

java -version

To configure the installation to use an existing JDK installation, choose the Custom installation type when running the installer. After you select the desired JDK versions, the installer prompts you to specify whether to use an existing JDK and for the location of the JDK.