When a Java Virtual Machine process starts, it requests a certain amount of system memory for its use. JVM Memory, included with every Java Virtual Machine, assures plenty of room for most applications. Usually, most servlets don't require a large amount of memory, and the amount supplied by one JVM Memory service is more than enough to get the job done. If you have an application with extraordinary memory requirements, the purchase of more JVM Memory services will make sure it has enough room to perform.