Installing SAP NW on RHEL 5.3 JAVA_HOME issues

Question

Hello,
I have worked for weeks trying to get the java part of install done properly. I have completed linux install with all parameters set properly. Only one thing holding preinstall test -- JAVA_HOME settings. I am loading SAP in distributed environment (main setup with database on another system) on 64 bit IBM Xseries system. I downloaded java 1.4.2_22 (from SUN) per a SAP note but this package does not have 64 bit JRE. Marcus stated in another listing installers need to load java 5.0 but I am wondering which package. Can someone tell me exactly which packages I need to install to complete and pathway of install. I have completely uninstalled all java packages and rpm s.
Thanks,
Jeff

Answer 1

root@linux ~# java -version
java version "1.4.2"
gij (GNU libgcj) version 4.1.2 20070626 (Red Hat 4.1.2-14)
Yes - as you see this is GNU java, not Sun Java - and Gnu java is not supported for a SAPGUI installation.
root@linux opt# java -jar PlatinGUI-Linux-710r6.jar
you have to set JAVA_HOME to the root of where you installed it.
so
export JAVA_HOME=/opt/<path-you-installed>
then edit your path:
export PATH=$JAVA_HOME/bin:$PATH
now "java -version" should output the Sun Java version.
Markus
Above is from another thread.
When I installed java rpm installed to /opt/IBMJava2-amd64-142 folder.
From above thread I learned to:
export JAVA_HOME=/opt/IBMJava2-amd64-142
then edit path:
export PATH=$JAVA_HOME/bin:$PATH    so I entered
export PATH=/opt/IMBJava2-amd64-142/bin:$PATH
is this correct? Am I suppose to replace last $PATH with something?
I still get error on precheck about JAVA_HOME: Could not check
Any help is greatly appreciated.
Jeff