eG Monitoring
 

Measures reported by O9iJvmTest

The JVM test is used  to analyze overall JVM performance for the processes of an Oracle application server instance. The JVM metrics provide useful information about threads and heap memory allocation. You should check these values to make sure that JVM resources are utilized within expected ranges.

Measurement Description Measurement Unit Interpretation
Active_thread_groups The current number of active thread groups in the JVM Number A high value for this measure is indicative of a high load on the JVM.
Active_threads Indicates the current number of active threads in the JVM Number A high value for this measure is indicative of a high load on the JVM.
Free_heap Indicates the unused memory in the JVM MB The free heap value governs the performance of the JVM. A low value could result in excessive garbage collection, slowing down responses/processing in the JVM.
Min_free_heap Indicates the low water mark of memory in the JVM since it started MB This metric indicates the time when the free heap reached its minimum value.
Heap_used Indicates the used memory in the JVM currently MB A very high value for this measure indicates heavy load on the JVM.
Max_heap_used The high water mark of heap used in the JVM since it was started MB A very high value for this measure indicates heavy load on the JVM.
Jvm_availability Indicates the availability of the Oracle application server instance Percent If this value is 100%, then it indicates that the JVM is running. If it is 0, it indicates that the JVM is not available or is not running.