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I have an IBM VM as my system VM (the IBM java.exe is first on the path in C:\windows\system32 ) When I start Eclipse Memory Analyzer, an RCP application, it uses the Sun VM instead. I think this is because org.eclipse.equinox.executable/library/win32/eclipseWin.c doesn't find a JRE/SDK directory for the first java.exe on the path, so goes straight to using registry keys to find the VM. See Bug 321080 comment 7 for a description. I know I could use -vm to chose a VM, but I think the launcher could do better. The simplest solution would be to use isSunVM() on the executable, and only use the registry keys if it is a Sun/Oracle VM. Starting the java.exe otherwise for IBM VMs would be acceptable for me, as that should find the right environment. Using the IBM registry keys and linking to java.dll would be even better. The IBM registry keys appear to be: HKEY_LOCAL_MACHINE\SOFTWARE\IBM\Java2 Runtime Environment\CurrentVersion which has a value of 1.6 on my machine then HKEY_LOCAL_MACHINE\SOFTWARE\IBM\Java2 Runtime Environment\1.4.2 HKEY_LOCAL_MACHINE\SOFTWARE\IBM\Java2 Runtime Environment\1.5 HKEY_LOCAL_MACHINE\SOFTWARE\IBM\Java2 Runtime Environment\1.5.0 HKEY_LOCAL_MACHINE\SOFTWARE\IBM\Java2 Runtime Environment\1.6 HKEY_LOCAL_MACHINE\SOFTWARE\IBM\Java2 Runtime Environment\1.6.0 all have JavaHome and RuntimeLib defined. There is also HKEY_LOCAL_MACHINE\SOFTWARE\IBM\Java Development Kit\CurrentVersion HKEY_LOCAL_MACHINE\SOFTWARE\IBM\Java Development Kit\1.5.0 HKEY_LOCAL_MACHINE\SOFTWARE\IBM\Java Development Kit\1.6 which have JavaHome but not RuntimeLib defined C:\Documents and Settings\Administrator>java -version java version "1.6.0" Java(TM) SE Runtime Environment (build pwi3260sr8fp1ifix-20100903_02(SR8 FP1+IZ83654)) IBM J9 VM (build 2.4, JRE 1.6.0 IBM J9 2.4 Windows XP x86-32 jvmwi3260sr8-20100401_55940 (JIT enabled, AOT enabled) J9VM - 20100401_055940 JIT - r9_20100401_15339 GC - 20100308_AA) JCL - 20100903_02 C:\Documents and Settings\Administrator>"c:\Program Files\IBM\Java60\jre\bin\java.exe" -version java version "1.6.0" Java(TM) SE Runtime Environment (build pwi3260sr8fp1ifix-20100903_02(SR8 FP1+IZ83654)) IBM J9 VM (build 2.4, JRE 1.6.0 IBM J9 2.4 Windows XP x86-32 jvmwi3260sr8-20100401_55940 (JIT enabled, AOT enabled) J9VM - 20100401_055940 JIT - r9_20100401_15339 GC - 20100308_AA) JCL - 20100903_02 *** System properties: awt.toolkit=sun.awt.windows.WToolkit eclipse.commands=-os win32 -ws win32 -arch x86 -showsplash -launcher C:\m5\MemoryAnalyzer-1.0.1.20100809-win32.win32.x86\mat\MemoryAnalyzer.exe -name MemoryAnalyzer --launcher.library C:\m5\MemoryAnalyzer-1.0.1.20100809-win32.win32.x86\mat\plugins\org.eclipse.equinox.launcher.win32.win32.x86_1.0.200.v20090519\eclipse_1206.dll -startup C:\m5\MemoryAnalyzer-1.0.1.20100809-win32.win32.x86\mat\plugins\org.eclipse.equinox.launcher_1.0.200.v20090520.jar -vm C:\Program Files\Java\jre6\bin\client\jvm.dll eclipse.home.location=file:/C:/m5/MemoryAnalyzer-1.0.1.20100809-win32.win32.x86/mat/ eclipse.launcher=C:\m5\MemoryAnalyzer-1.0.1.20100809-win32.win32.x86\mat\MemoryAnalyzer.exe eclipse.product=org.eclipse.mat.ui.rcp.MemoryAnalyzer eclipse.startTime=1298901024062 eclipse.vm=C:\Program Files\Java\jre6\bin\client\jvm.dll eclipse.vmargs=-Xmx1024m -Djava.class.path=C:\m5\MemoryAnalyzer-1.0.1.20100809-win32.win32.x86\mat\plugins\org.eclipse.equinox.launcher_1.0.200.v20090520.jar file.encoding=Cp1252 file.encoding.pkg=sun.io file.separator=\ java.awt.graphicsenv=sun.awt.Win32GraphicsEnvironment java.awt.printerjob=sun.awt.windows.WPrinterJob java.class.path=C:\m5\MemoryAnalyzer-1.0.1.20100809-win32.win32.x86\mat\plugins\org.eclipse.equinox.launcher_1.0.200.v20090520.jar java.class.version=50.0 java.endorsed.dirs=C:\Program Files\Java\jre6\lib\endorsed java.ext.dirs=C:\Program Files\Java\jre6\lib\ext;C:\WINDOWS\Sun\Java\lib\ext java.home=C:\Program Files\Java\jre6 java.io.tmpdir=C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp\ java.library.path=C:\m5\MemoryAnalyzer-1.0.1.20100809-win32.win32.x86\mat;.;C:\WINDOWS\Sun\Java\bin;C:\WINDOWS\system32;C:\WINDOWS;C:/Program Files/Java/jre6/bin/client;C:/Program Files/Java/jre6/bin;C:\Program Files\ThinkPad\Utilities;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\Program Files\IBM\Infoprint Select;C:\Notes;C:\Program Files\XLView;C:\lotus\compnent;C:\Utilities;C:\Program Files\IBM\Personal Communications\;C:\Program Files\IBM\Trace Facility\;C:\Program Files\ThinkPad\ConnectUtilities;C:\WINDOWS\Downloaded Program Files;C:\Program Files\ObjREXX;C:\Program Files\ObjREXX\OODIALOG;C:\Program Files\ATI Technologies\ATI.ACE\Core-Static;C:\Program Files\Common Files\Lenovo;C:\Program Files\QuickTime\QTSystem\;C:\Program Files\IBM\CMVCDC50 java.runtime.name=Java(TM) SE Runtime Environment java.runtime.version=1.6.0_18-b07 java.specification.name=Java Platform API Specification java.specification.vendor=Sun Microsystems Inc. java.specification.version=1.6 java.vendor=Sun Microsystems Inc. java.vendor.url=http://java.sun.com/ java.vendor.url.bug=http://java.sun.com/cgi-bin/bugreport.cgi java.version=1.6.0_18 java.vm.info=mixed mode java.vm.name=Java HotSpot(TM) Client VM java.vm.specification.name=Java Virtual Machine Specification java.vm.specification.vendor=Sun Microsystems Inc. java.vm.specification.version=1.0 java.vm.vendor=Sun Microsystems Inc. java.vm.version=16.0-b13 line.separator=
This bug hasn't had any activity in quite some time. Maybe the problem got resolved, was a duplicate of something else, or became less pressing for some reason - or maybe it's still relevant but just hasn't been looked at yet. If you have further information on the current state of the bug, please add it. The information can be, for example, that the problem still occurs, that you still want the feature, that more information is needed, or that the bug is (for whatever reason) no longer relevant. -- The automated Eclipse Genie.
This bug was marked as stalebug a while ago. Marking as worksforme. If this report is still relevant for the current release, please reopen and remove the stalebug whiteboard tag.
