How do I enable large page support on Windows?

Environment

• Windows
• Java JDK

Issue

• I want to enable large page support for Java, and I must enable it on my Windows system.

• Unable to start JBoss and getting below logs:

Java HotSpot(TM) 64-Bit Server VM warning: JVM cannot use large page memory because it does not have enough privilege to lock pages in memory.
java.lang.NoClassDefFoundError: 922
Caused by: java.lang.ClassNotFoundException: 922
	at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
Could not find the main class: 922.  Program will exit.
Exception in thread "main" Shutdown JBoss EAP 5 (JVM1) service

Resolution

• Large pages are only supported on Windows Server 2003/2008.

• The user running Java must have the following additional privileges assigned:

  1. Select Control Panel -> Administrative Tools -> Local Security Policy
  2. Select Local Policies -> User Rights Assignment
  3. Double click "Lock pages in memory"
  4. Add users and/or groups
  5. Reboot the machine

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