WebSphere Application Server & Liberty

WebSphere Application Server & Liberty

Join this online group to communicate across IBM product users and experts by sharing advice and best practices with peers and staying up to date regarding product enhancements.

 View Only

  • 1.  JVM operating system versions

    Posted 11/18/13 02:25 PM
    Hi,

    Can anyone let me explain about the 32bit and 64bit JVM.

    Which one is preferable. Also JDK Installation instructions.

    Thanks,
    Anil kumar


  • 2.  JVM operating system versions

    Posted 11/19/13 01:54 AM
    Hi Anil,

      This blog has a good explanation.

      www.ibm.com/developerworks/community/blo...
     
      Preferable depends, if you need JVM bigger than 2GB (with 32 bit 4GB is the maximun, Java Heap + Native Heap + the Operating System) then you need 64 bit JVM (performance impact).
     
      My expirence in the past is create 32 Bits JVM and scale in vertical and horizontal.  Actually with the new JVM 1.6 and 1.7 I'm consolidating 32 JVMs in super 64 bits JVM reducing JVM/servers. Like always, depends in the purpose of the servers and the applications.
     
      To install JDK you only need to download, descompress in one directory and put this directory in PATH environment variable.  
     
      Then you can check the "installation" with the command: java -version
     
      Hope this helps.
     
    regards


Related Content