SREE Linux installation and java setup

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Installing SREE on a Linux machine for development purposes isn't quite as well-supported as installing on Windows.

The SREE environment is also prone to Java-related failures, if for instance, java is upgraded on the Linux machine.

Here are the things to check if Designer or EnterpriseManager won't start under Linux.

Which JAVA_HOME?

When SREE asks for JAVA_HOME to be set, it should be two directories above the chosen Java executable. That will allow a command like this to work: 

$JAVA_HOME/bin/java yada yada yada

I had to manually set JAVA_HOME in em.sh (the launching script for EnterpriseManager). Like this: 

JAVA_HOME=/etc/alternatives/java_sdk

Designer

The designer app is launched by a java wrapper that is configured by a file called designer.lax. I had to modify that file to correct the setting of the lax.nl.current.vm property like this: 

#   LAX.NL.CURRENT.VM
#   -----------------
#   the VM to use for the next launch

#lax.nl.current.vm=/etc/alternatives/jre_1.6.0/bin/java_vm
lax.nl.current.vm=/etc/alternatives/jre_1.6.0/bin/java

Evidently it is important to point to the java and not the java_vm.

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