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# Oracle Dynamic Monitoring System (DMS)

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Oracle DMS is a library that enables application and system developers to use a variety of DMS sensors to measure and export customized performance metrics for specific software components (called nouns).

TopLink includes DMS instrumentation in essential objects to provide efficient monitoring of runtime data in TopLink enabled applications, including both J2EE and non-J2EE applications.

By enabling DMS profiling in a TopLink application, you can collect and easily access run-time data that can help you with application administration tasks and performance tuning.

You can easily access DMS data at run time using a management application that supports the Java Management Extensions (JMX) API (see "Accessing Oracle DMS Profiler Data Using JMX"), or using any Web browser and the DMS Spy servlet (see "Accessing Oracle DMS Profiler Data Using the DMS Spy Servlet").

For more information, see "Measuring TopLink Performance With the Oracle Dynamic Monitoring System (DMS)".