Occupancy is the proportion of total Java heap that is in use after garbage collection.
The JVM runtime tries to maintain a maximum occupancy between 40% and 70% of the total available
heap. If occupancy goes above 70%, then the heap is expanded. If the heap is already at the
maximum size, then there is a danger of storage shortage and OutOfMemory errors. This may indicate
a possible memory leak in the application. If not, consider increasing the maximum heap size with
Java option -mxnnnn; using a 64-bit JVM, or deploying some of the workload to another JVM.
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