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How to Determine Which JVM an Application is Using for Multiple JVM's per Instance (Numprocs=2) (Doc ID 741465.1)

Last updated on AUGUST 10, 2018

Applies to:

Oracle Containers for J2EE - Version 9.0.4.0.0 to 10.1.3.5.0 [Release AS10g to AS10gR3]
Information in this document applies to any platform.
This note has been inspired by Mike Lehmann's blog.


Goal

In the Oracle Application Server it is standard practice to set up a cluster with multiple application server instances hosting multiple OC4J instances each run atop of multiple JVMs.

Frequently when executing a specific application instance (servlet/EJB/Web service), it can be useful to have the exact location the application is running in. Which Application Server instance, which specific OC4J instance and sometimes even the exact JVM instance. Sometimes you need this for your application to make some application centric decision, but more often it is useful for debugging when working in large clusters.
So how can you determine this on Oracle Application Server?

Solution

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In this Document
Goal
Solution

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