AppDynamics switched from Semantic Versioning to Calendar Versioning starting in February 2020 for some agents and March 2020 for the entire product suite.

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    The Java Agent excludes system classes like java.lang.* from instrumentation by default. To enable instrumentation for a system class, use an agent configuration property as described here:

    Instrumented system classes add to the resource overhead introduced by the agent. The amount of overhead depends on the number of calls to the classes. AppDynamics recommends that you instrument a few nodes first and monitor the performance for these nodes before configuring all nodes in your system.

    To instrument a Java system class:
    1. Open the <agent_home>/conf/app-agent-config.xml file for the node where you want to enable instrumentation.
    2. Add an <override-system-exclude> element with the fully qualified system class name to be instrumented in the <bci-processing-excludes> element.  <override-system-exclude> element is used to whitelist classes (for example, 'com.sun.jersey') for instrumentation despite a blacklist ('com.sun.*'). 

      For example:

      <override-system-exclude filter-type="equals" filter-value="com.sun.jersey"/>

      You can use the following filter type:

      • equals
      • startswith
      • contains
    3. Restart the JVM for which you have modified the XML file.
      Once you restart the JVM, the package will be included in the instrumentation.

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