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In short, to upgrade the AppDynamics Agent, you simply copy the existing agent directory to a backup location and replace it with the new agent directory. You then copy configuration file changes made in the old directory to the new agent directory and restart the application server.
This topic provides additional background information and step-by-step instructions.
If you are upgrading both the Controller and agents, first upgrade the Controller and then upgrade the Java Agents.
Also, if upgrading multiple agents in your monitored environment, upgrade the agents for the tiers on which business transactions are originated last. For more information about this requirement, along with Controller and agent compatibility information, see Agent - Controller Compatibility Matrix.
Upgrading the agent requires a restart of the application server.
Before starting, download the latest version of the for your JVM from the AppDynamics Download Center.
Copy controller-info.xml and, if necessary, agent.properties from the old agent config directory to the following location in the new directory:
When done you can archive the original directory and remove it from the application server home.