title: increasing java heap size pace
body: <p>I need to increase Java heap size to 2GB RAM. For doing the same I used the command as a user (I did not do this as root user):</p>
  
  <pre><code>$ export JVM_ARGS="-Xmx2048m"
  </code></pre>
  
  <p>However, the java heap size does not increase after doing it.</p>
  
  <pre><code>$ java -XX:+PrintFlagsFinal -version | grep -iE 'HeapSize|PermSize|ThreadStackSize'
      uintx AdaptivePermSizeWeight                    = 20              {product}           
       intx CompilerThreadStackSize                   = 0               {pd product}        
      uintx ErgoHeapSizeLimit                         = 0               {product}           
      uintx HeapSizePerGCThread                       = 87241520        {product}           
      uintx InitialHeapSize                          := 1054841216      {product}           
      uintx LargePageHeapSizeThreshold                = 134217728       {product}           
      uintx MaxHeapSize                              := 16877879296     {product}           
      uintx MaxPermSize                               = 174063616       {pd product}        
      uintx PermSize                                  = 21757952        {pd product}        
       intx ThreadStackSize                           = 1024            {pd product}        
       intx VMThreadStackSize                         = 1024            {pd product}        
  java version "1.7.0_75"
  OpenJDK Runtime Environment (rhel-2.5.4.0.el6_6-x86_64 u75-b13)
  OpenJDK 64-Bit Server VM (build 24.75-b04, mixed mode)
  </code></pre>
  
  <p>Can someone suggest as to where am I going wrong?</p>