Installing SAP NW on RHEL 5.3 JAVA_HOME issues

[Former Member]

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

[hannes_kuehnemund · Accepted solution]

Hi Jeff,

for Linux on x86_64 you need the IBM JDK 1.4.2, the Sun JDK is only for i386 and IA64 !

Check [https://service.sap.com/sap/support/notes/861215|https://service.sap.com/sap/support/notes/861215]

Thanks, Hannes

[Former Member · Accepted solution]

Thank you Hannes,

I was at IBM site before but did not read SAP note to get access code. Thanks when I went back saw access code to download java.

Now I have rpm for java version for X86_64 but when I install I still get java -version not found. I would suspect it is because this rpm is not red hat version. I have downloaded rpm and tgz. I ran the rpm and opened the tgz. I opened tgz and put IBMJava2-amd64-142 file in home folder. Subfolders include bin, demo, docs, include, jre, lib folders. Should I have PATH and JAVA_HOME pointing to one of these subfolders? Does this tell red hat my java version? Sorry I am more comfortable in debian linux.

Thanks,

Jeff

[Former Member · Accepted solution]

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

[Former Member · Accepted solution]

Ok

What 'env' command shows for the user root regarding PATH and JAVA_HOME?

And, are you trying to set java_home and path only in terminal window ? I hope you are editing bash profile file too

http://www.cyberciti.biz/faq/linux-unix-set-java_home-path-variable/

[Former Member · Accepted solution]

Hello Anjali,

root 'env' is showing

JAVA_HOME=/opt/IBMJava2-amd64-142

PATH=/opt/IBMJava2-amd64-142/bin

my rpm install put the java folder in /opt/IBMJava2-amd64-142

when I run java -version

i get :

java version "1.4.2"

Java (TM) 2 Runtime Environment, Standard Edition (build 2.3)

IBM J9 VM (build 2.3, J2RE 1.4.2 IBM J9 2.3 Linux amd64-64 j9vmxa64142-20090310 (JIT enabled)

J9VM - 20090309_31291_LHdSMr

JIT - 2009210_1447ifx1_r8

GC - 200902_24

when I run which java i get :

/opt/IBMJava2-amd64-142/bin/java

When I run precheck still getting JAVA_HOME could not be check error every thing else comes back OK

Thank you hopefully something here will ring an alarm.

Jeff

[hannes_kuehnemund · Accepted solution]

Hi Jeff,

I'm still not quite sure what your current issue is. What "precheck" are you referring to? provide more information ..

Thanks,

Hannes

[Former Member · Accepted solution]

Hello Hannes,

The precheck I am referring to is the prerequisite checker in standalone mode. When I run this I still get JAVA_HOME error.

Jeff

[Former Member · Accepted solution]

I was able to do install even though error continued in prerequisite test.

Thank you all

Jeff