Adding resources

Dynamically adding processors (or part of a processor) to a partition in which Java is running is seamless. If the Java application is utilizing almost all processing capacity, then the new additional capacity will be utilized.

Dynamically adding memory to a partition running a Java application will help application performance in certain circumstances.

If the running application is currently paging a portion of the heap to disk because the maxheap was set higher than the amount of available physical memory

If the application needs a larger heap size, and the soft maximum heap size has been set and the application is capable of being made aware of the increase in memory