This text is for MS Windows only.
The 64 bit JobScheduler needs a 64 bit JVM and the 32 bit JobScheduler need a 32 bit JVM (jvm.dll) to run.
To determine where the location of this file is, JobScheduler get 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 section java in the configuration file ./config/sos.ini.
Example:
... [java] vm = C:\Program Files\Java\jre7\bin\client\jvm.dll ...