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Old 09-24-2012, 03:41 PM   #1
econ8193
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Clarification setting environmental Variables JAVA_Home and JDK_HOME


Currently having issues with a software installation script finding the correct JRE on my Linux redhat enterprise 5 64 bit operating system. before the installation I test echo $JAVA_HOME returning /usr/java/jre1.6.0_31 also testing "which java" which returns /usr/bin/java.
during the installation added -is:log and returned the following file contents:

Log file created by ISMP installer @Mon Sep 24 13:40:06 CDT 2012
INSTALLER_PATH=/opt/80dev/./osasinstall.sh
Checking the environment variables specifed in the JVM files to find the JVM...
Verifying... /usr/bin/java -cp /root/istemp1359268134006/Verify.jar Verify java.version
$JDK_HOME is not defined in the shell environment specifed in the JVM FILE jre1.6.X.genericunix.jvm
$JAVAHOME is not defined in the shell environment specifed in the JVM FILE jre1.6.X.genericunix.jvm
A jvm found at /usr/java/jre1.6.0_31/bin/java
Verifying... /usr/java/jre1.6.0_31/bin/java -cp /root/istemp1359268134006/Verify.jar Verify java.version
Verification failed for /usr/java/jre1.6.0_31/bin/java using the JVM file /root/istemp1359268134006/jre1.6.X.genericunix.jvm.
No JVM can be found using the shell environment variable. Searching JVM will continue with Path Hints specified in the JVM Files...
--------------------------------------------------------------------------------------------
Searching a JVM using /root/istemp1359268134006/jre1.6.X.genericunix.jvm
Verifying... /usr/java/jdk1.6.0_35/bin/java -cp /root/istemp1359268134006/Verify.jar Verify java.version
Verification failed for /usr/java/jdk1.6.0_35/bin/java using the JVM file /root/istemp1359268134006/jre1.6.X.genericunix.jvm.
Verifying... /usr/java/jre1.6.0_31/bin/java -cp /root/istemp1359268134006/Verify.jar Verify java.version
Verification failed for /usr/java/jre1.6.0_31/bin/java using the JVM file /root/istemp1359268134006/jre1.6.X.genericunix.jvm.
My first question might be where is it looking for the noted environmental variables? Second would be the syntax for changes as I am new and unsure what and where in the necessary files to edit.
Thanks for any applicable advice.
 
Old 09-25-2012, 08:16 AM   #2
knudfl
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Installing the latest version = jdk-1.6.0_35 :
# yum localinstall --nogpgcheck jdk-1.6.0_35-fcs.x86_64.rpm

Download link http://ftp.scientificlinux.org/linux...fcs.x86_64.rpm

Setting up the new java : 1) su
2)
/usr/sbin/alternatives --install /usr/bin/java java /usr/java/jdk1.6.0_35/bin/java 2

3) /usr/sbin/alternatives --config java
.. And then select the "sun/oracle jdk6".

The selected version can be checked with : $ java -version

.

Last edited by knudfl; 09-25-2012 at 08:39 AM.
 
  


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