关于portal版本是32位还是64位的问题，很纠结，很困惑

环境说明：机器上既安装了portal集群也安装了was集群，但本次只关心portal的版本
1、默认jdk版本：
# java -version
java version "1.4.2"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2)
Classic VM (build 1.4.2, J2RE 1.4.2 IBM AIX build ca142-20080923 (SR12) (JIT enabled: jitc))
2、指定portal安装目录的jdk版本：
# /opt/IBM/WebSphere/AppServer/java/jre/bin/java -version
java version "1.5.0"
Java(TM) 2 Runtime Environment, Standard Edition (build pap64devifx-20090811 (SR10 +IZ56666+IZ56751))
IBM J9 VM (build 2.3, J2RE 1.5.0 IBM J9 2.3 AIX ppc64-64 j9vmap6423-20090707 (JIT enabled)
J9VM - 20090706_38445_BHdSMr
JIT  - 20090623_1334_r8
GC   - 200906_09)
JCL  - 20090811
3、portal日志目录startServer.log打印：
************ Start Display Current Environment ************
Host Operating System is AIX, version 5.3
Java version = J2RE 1.5.0 IBM J9 2.3 AIX ppc64-64 j9vmap6423-20090707 (JIT enabled)
J9VM - 20090706_38445_BHdSMr
JIT  - 20090623_1334_r8
GC   - 200906_09, Java Compiler = j9jit23, Java VM name = IBM J9 VM
was.install.root = /opt/IBM/WebSphere/AppServer
user.install.root = /opt/IBM/WebSphere/wp_profile
Java Home = /opt/IBM/WebSphere/AppServer/java/jre
4、试探设置参数：
# /opt/IBM/WebSphere/AppServer/java/jre/bin/java -Xms4095M -Xmx4096M -version
java version "1.5.0"
Java(TM) 2 Runtime Environment, Standard Edition (build pap64devifx-20090811 (SR10 +IZ56666+IZ56751))
IBM J9 VM (build 2.3, J2RE 1.5.0 IBM J9 2.3 AIX ppc64-64 j9vmap6423-20090707 (JIT enabled)
J9VM - 20090706_38445_BHdSMr
JIT  - 20090623_1334_r8
GC   - 200906_09)
JCL  - 20090811
5、其他命令查看：
# lslpp -l |grep Java
  Java14.msg.zh_CN           1.4.2.0  已提交     Java SDK 32-bit
  Java14.sdk               1.4.2.250  已提交     Java SDK 32-bit
  Java5.sdk                5.0.0.225  已提交     Java SDK 32-bit
  Java14.sdk               1.4.2.250  已提交     Java SDK 32-bit
  Java5.sdk                5.0.0.225  已提交     Java SDK 32-bit

从上面的信息来判断，那portal到底是哪个版本呢？急盼各位专家给个答案~收起