title: How many JVM we can have in one machine?
body: <p>I have a class that run infinit (do nothing, just loop and sleep), called NeverReturn. I try to run it using following command in Windows XP 32bit:</p>
  
  <p>java -Xms1200M NeverReturn</p>
  
  <p>I find with the command I can create only 4 java instance at same time. The 5th and next java command will failed to create jvm.</p>
  
  <p>If I change the command to -Xms600M, I can create 8 java instance. The 9th will failed.</p>
  
  <p>Could anyone explain that? I'm using sun jdk1.6 update 23 and jdk1.5 update 22.</p>