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Use

This monitoring group contains the following SAP JVM monitors, activated by default:

Monitor Unit

Description

ConcurrentGCRatio

Returns the ratio of the time spent during garbage collection in comparison with the overall runtime of the JVM over various periods of time.

FullGCWorkTimeRatio

Returns the ratio of the time spent during full garbage collection in comparison with the actual.

GC Ratio

Returns the ratio of the time spent during garbage collection in comparison with the overall runtime of the JVM over various periods of time.

GC Spinning Due to Java Heap

Returns the number of times the concurrent garbage collector spinned due to the permanent generation being above the corresponding threshold over various periods of time.

GC Spinning Due to Perm Generation

Returns the number of times the concurrent garbage collector spined due to the permanent generation being above the corresponding threshold over various periods of time.

GC State

Returns numbers indicating the state of the garbage collection. The numbers means respectively: 0 - OK; 1 - warning; 2 - problem alert.

GCWorkTimeRatio

Returns the ratio of the time spent during garbage collection in comparison with the actual normalized working time of garbage collections over various periods of time.

Java Heap Memory Shortages

Returns the number of times a memory shortage occurred in the Java heap over various periods of time.

Permanent Generation Memory Shortages

Returns the number of times a memory shortage occurred in the permanent generation over various periods of time.

SystemLoadAverage

Returns the load average in the system run queue assigned to the available processors averaged over various periods of time.

System State

Returns numbers indicating the state of the AS Java. The numbers means respectively: 0 - OK; 1 - warning; 2 - problem alert.

Features

These monitors are alert based and provide data about the system load and memory. They help to identificate problems via the System Overview monitoring tool.

More information: System Overview