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Location of the JVM for Windows 

  • The 64 bit JobScheduler needs a 64 bit JVM and the 32 bit JobScheduler needs a 32 bit JVM (jvm.dll) to run.
  • To determine where the location of this file is, JobScheduler retrieves the active java version from the Windows registry:
 HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Runtime Environment\CurrentVersion
  • This version contains the key RuntimeLib which will determine the location of the JVM used by JobScheduler (e.g. HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Runtime Environment\1.7\RuntimeLib).
  • You can use a different JVM specifying the option vm in the section java in the configuration file ./config/sos.ini.


 vm                     = C:\Program Files\Java\jre7\bin\client\jvm.dll


Starting from release 1.8 the following applies

Instead of the registry you can force that the JobScheduler use the JAVA_HOME environment variable if you configure the ./config/sos.ini with

 vm                     = JAVA_HOME

Then the JobScheduler looks first in %JAVA_HOME%/bin/server and then in %JAVA_HOME%/bin/client to find the jvm.dll