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Difference between revisions of "EclipseLink/UserGuide/JPA/Advanced JPA Development/Performance/Performance Monitoring and Profiling/Fetch Group Monitoring"

m (New page: {{EclipseLink_UserGuide |info=y |toc=n |eclipselink=y |eclipselinktype=JPA |api=y |apis= * [http://www.eclipse.org/eclipselink/api/latest/org/eclipse/persistence/tools/profiler/package-sum...)
 
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* [http://www.eclipse.org/eclipselink/api/latest/org/eclipse/persistence/tools/profiler/package-summary.html profiler]
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* [http://www.eclipse.org/eclipselink/api/latest/org/eclipse/persistence/tools/profiler/FetchGroupMonitor.html FetchGroupMonitor]
* [http://www.eclipse.org/eclipselink/api/latest/org/eclipse/persistence/tools/profiler/PerformanceProfiler.html PerformanceProfiler]
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=Fetch Group Monitoring=
 
=Fetch Group Monitoring=
  
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Use the Fetch Group Monitor to measure fetch group field usage. This can be useful for performance analysis in a complex system.
  
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Enable this monitor using the System property <tt>org.eclipse.persistence.fetchgroupmonitor=true</tt>.
  
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The monitor dumps the attribute used for a class every time a new attribute is accessed.
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For more information about fetch groups, see [[EclipseLink/UserGuide/JPA/Advanced JPA Development/Performance/Fetch Groups|Fetch Groups]].
  
  

Revision as of 15:23, 28 January 2011

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Fetch Group Monitoring

Use the Fetch Group Monitor to measure fetch group field usage. This can be useful for performance analysis in a complex system.

Enable this monitor using the System property org.eclipse.persistence.fetchgroupmonitor=true.

The monitor dumps the attribute used for a class every time a new attribute is accessed.

For more information about fetch groups, see Fetch Groups.


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