JDK 1.4_00 64位
推荐使用IBM jdk
sun.com站点没有找到64位 Linux版本的jdk,只能下载IBM的版本。更何况SAP推荐使用IBM JDK。
There was a problem detected with the SAP startup framework of the WebAS Java in combination with SUN J2SE 1.4.2_13 on Linux x86 (32 Bit) and Linux Itanium (64 Bit). Please pay attention to note 1009962 (even if you use a higher version than 1.4.2_13).
Red Hat supported IBM 1.4.2 JDK for x86_64
To install the Red Hat supported IBM 1.4.2 JDK, please make sure that the system is subscribed to the "RHEL AP for SAP" channel on RHN or your local RHN Satellite. You can then install the required IBM 1.4.2 JDK packages via the following commands:
yum install java-1.4.2-ibm-1.4.2.13.sap-1jpp.3.el5_3
yum install java-1.4.2-ibm-devel-1.4.2.13.sap-1jpp.3.el5_3
To avoid that the IBM 1.4.2 JDK packages get overwritten during a update please add the following line to /etc/yum.conf:
exclude=java-1.4.2-ibm*
Note 1048303 - Red Hat Enterprise Linux 5.x: Installation and upgrade
http://www.ibm.com/developerworks/java/jdk/linux/download.html


下载到IBMJava2-SDK-AMD64-1.4.2-13.4.x86_64.tgz
解压后
IBMJava2-amd64-142
JCE 下载
安装IBM JDK之后,要求使用IBM的JCE。 原来直接能找到jce_policy-1_4_2.zip文件,先在名称变为unrestricted.zip。
https://www6.software.ibm.com/dl/jcesdk/jcesdk-p

本文介绍了在Linux环境下安装IBM JDK 1.4.2的具体步骤,并提供了避免更新覆盖的解决方案。文中还提及了SAP启动框架的问题及注意事项,推荐使用IBM JDK而非Sun JDK。
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