I tried to do this, but it is not possible for me, when I right click UMT on windows 2012 server R2. I cannot see the properties. So, I created on shortcut on server,
java "D:\Program Files (x86)\SAP BusinessObjects\SAP BusinessObjects Enterprise XI 4.0\win64_x64\sapjvm\jre\bin\javaw.exe" -Xmx16g -Djava.io.tmpdir="e:\tmp -Djava.library.path="d:\Program Files (x86)\SAP BusinessObjects\SAP BusinessObjects Enterprise XI 4.0\java\apps\upgradeManagementTool\jars\upgrademanagementtool.jar" and double clicked before starting UMT.
but it is not helping either.,