Tibco BusinessWorks on IBM Java 9 with reduced memory consumption thanks to Strings held as byte[] instead of char[]

http://openjdk.java.net/jeps/254

https://www.ibm.com/support/knowledgecenter/SSYKE2_9.0.0/j9vm_reference.html

but...

https://github.com/eclipse/openj9/issues/42 needs some work - default Garbage Collection settings may have impact on some benchmarks and real life loads. Still IBM Metronome GC doesn't have these issues.

To switch Tibco BW to OpenJ9 use these settings in tra:

tibco.env.JVM_LIB_DIR /home/user/TIBCO/tibcojre64/jdk-9+181/lib/j9vm
tibco.env.JVM_LIB_SERVER_DIR /home/user/TIBCO/tibcojre64/jdk-9+181/lib/j9vm
tibco.env.JVM_LIB_PATH /home/user/TIBCO/tibcojre64/jdk-9+181/lib/j9vm/libjvm.so

When switching from Java 7 you have to add sun.io.* to some jar in classpath. Memory usage needs some research and numbers and then we can think of target environments: DEV, TEST. PROD would need support from Tibco.