I got 'JVM Bit size: x86' for os.arch and '32bit' for on my intel machine with 64 bit windows 7 os. Solution is use -d64 JVM option to run JVM on 64 bit data model.Ĭould not create the java virtual machineĪ fatal exception occurred. Which means you may not able to assign more than 3.5GB of heap, despite running 64 bit JVM in 64 bit machine. Sparc, one JVM installation represent both 32 bit and 64 bit JVM and until specified by -d32 and -d64, they by default run on 32 bit data model.

One of the interesting point to know relate to 32 bit or 64 bit installation is that it varies on different environment e.g In windows and Linux you have separate installation for 32 bit and 64 bit JVM but on Solaris machine e.g. if My Solaris sparc box is 64 bit but JVM is 32 bit can I execute Java program there ? Hi, We have several JDK and JRE installed on Solaris Sparc box, I want to find out which installed JDK or JRE is 64 bit ? Can you please share command to do that ? Also is it possible to run 32 bit JVM in 64 bit machine i.e. I used Java(TM) SE Runtime Environment (build 1.6.0_22-b04) so file from separate location.Ĭalling System.getProperty('os.arch') on a 64-bit Linux system (OpenSUSE 11.4) with a 32-bit JVM returns: i386 I don't require check if JVM is 32 bit but if any JVM is 64 bit than we do load native.

I wanted know whether my JVM is 64 bit or not and found your tips very relevant.

Java x64