Web Client installation error FSUM6807 expression syntax error

Products

• Vantage Storage Resource Manager

Issue/Introduction

The Web Client Installation fails with error: 
# ./WebClientSetup.sh 
test: ./WebClientSetup.sh 116: FSUM6807 expression syntax error 
java version is not supported. 
Java version should be greater than or equal to 1.8 
Exiting from CA Vantage SRM Web Client Installer 
although JAVA _VERSION="1.8.0_171" is installed. 

Environment

Vantage r14.0, Web Client 14.0.5

Cause

The error message is misleading.
The Installation script WebClientSetup.sh issues a "java -version" command to check the java version,
but if any error is returned by the command, the check fails and the error message is issued in any case:
FSUM6807 expression syntax error 
java version is not supported. 
Java version should be greater than or equal to 1.8 
Exiting from CA Vantage SRM Web Client Installer 
  
Here the corresponding code from the WebClientSetup.sh:
...
javaexe="$javahome"/bin/java                                   
export JAVA_HOME="$javahome"                                   
export PATH=$JAVA_HOME/bin:$PATH                               
$JAVA_HOME/bin/java -version 2>java.ver                        
JAVA_VERSION=cat java.ver| grep "IBM" | awk '{print $7}'     
JAVA_MAJOR_VER=echo $JAVA_VERSION|awk -F"." '{print $1}'     
JAVA_MINOR_VER=echo $JAVA_VERSION|awk -F"." '{print $2}'     
#echo "java minor = $JAVA_MINOR_VER major = $JAVA_MAJOR_VER"   
if test $JAVA_MAJOR_VER -ge 1 -a $JAVA_MINOR_VER -ge 8         
then                                                           
  rm java.ver                                                  
  LicenseAgree                                                 
  CallInstaller                                                
 else                                                          
  echo "java version is not supported."                        
  echo "Java version should be greater than or equal to 1.8"   
  ExitInstallMsg                                               
fi
...

Resolution

If the installation fails with above message, there should still exist the file java.ver which contains the result from the java -version command issued in the WebClientSetup.sh

In this specific case, the file java.ver contained message -
JVMJ9VM015W Initialization error for library j9gc29(2): Failed to instantiate compressed references metadata; 200M requested  
and the problem was caused by the MAXSIZE of the TSO segment of the userid being 200MB and using 2GB (2096218) as MAXSIZE solved the problem.