Updated Coherence JVisualVM Plugin in Latest Coherence Patch

We have just released Coherence, (Patch 20164069) which is the first patch set on top of 12.1.3.  As part of this patch there are a few updates to the Coherence JVisualVM Plugin that improve the range of functionality that we can support, a couple of UI tweaks as well as addressing an issue monitoring Coherence clusters in WebLogic Server environments.

The feature highlights are:

  1. Added a tab for displaying information about Elastic Data
  2. Added a tab for display JCache Information when using Coherence to store JCache (JSR-107) caches
  3. Additional metrics to track partitions stats graphically for a service
  4. Displaying extra details for some data via drill down.

Displaying Elastic Data Information 

We have added support for displaying a tab when you are using Elastic Data. We support clusters running 3.7.x and above and display information about both the Ram Journal and Flash Journal usage as well as the number of compactions taking place.

Elastic Data Tab

Displaying JCache Information

We’ve also added support for display information about JCache when you are using Coherence to store JCache caches. We show both configuration and statistics information.


Additional Partition Metrics

Now when you select a service in the ‘Services’ tab, you can see a ‘Partition’ sub-tab that shows a graphical representation of partition related information. The items we are showing are partition counts related to Pending, Unbalanced, Vulnerable and Endangered partitions. This can be useful when you are wanting to see whats happening to a services partitions over a period of time.

Service Partitions

More Details on Drill Down

On the Member, Service Detail and Cache Detail tables we now support a ‘Drill Down’, via right click to display detailed JMX information which is useful for more detailed diagnostics.

Drill Down

To download the Coherence patch set  download patch 20164069 from My Oracle Support website.

Merry Christmas and Happy New Year to all.

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6 Responses to Updated Coherence JVisualVM Plugin in Latest Coherence Patch

  1. User 1 says:

    Where is the nbm plugin file? I’ve downloaded the latest version – simply marked 12.1.3, dated Dec 10th 2014 – from the Incubator references (to Maven Central), but it doesn’t seem to contain any of these new tabs and data. Has this new plugin been released yet? Also, doesn’t seem to be part of the Coherence patchset that is mentioned..

  2. User 1 says:

    It’s OK, I found it. The latest nbm plugin version gets written to the HOME\coherence\plugins\jvisualvm directory once you apply the patch.

  3. Michel Herrera says:

    Is there any integration with Java Flight Recorder? It would be great if you could capture all this data series in one snapshot for later analysis.

  4. Apologies, i had the wrong patch number. The Patch number should be 20164069.

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