One possible reason why Java APM agents used in a production environment are consistently found to be disabled while no development environments exhibit this behavior is that the production agents are running out of heap memory and crashing. This can happen if the production agents are monitoring a high volume of business transactions, metrics, or snapshots, and the default heap size is not sufficient to handle the load. To resolve this issue, you can enable the heap-storage-monitor-enabled setting on the agent, which allows the agent to monitor its own heap usage and automatically reduce the amount of data it collects when the heap usage reaches a certain threshold. This can help to prevent the agent from running out of memory and crashing.You can also adjust the heap-storage-monitor-threshold setting to specify the percentage of heap usage that triggers the data reduction1.Alternatively, you can also increase the heap space for the agent by using the -Xmx option in the agent startup script, but this may require more resources from the host machine2.

The other options are not valid solutions to resolve this issue. Enabling agent auto-restart in the controller UI will not prevent the agent from crashing due to heap exhaustion, but only restart the agent after it crashes.This may cause data loss and performance degradation3. Decreasing the worker thread count will not affect the heap usage of the agent, but only limit the number of concurrent tasks that the agent can execute. This may reduce the agent throughput and responsiveness.

https://docs.appdynamics.com/display/PRMY22/Java+Agent

https://docs.appdynamics.com/appd/23.x/latest/en/application-security-monitoring/cisco-secure-application-requirements

The Policy Test Bench gives administrators the ability to test and debug policy execution. It allows you to simulate events and see how the policies and actions respond to them.You can also view the policy execution logs and troubleshoot any issues1Reference:1: Policy Test Bench

The App Server agent configuration GUI allows you to set the configuration for the following agent properties:

Node-name: This property defines the name of the node that appears in the Controller UI.You can use the GUI to change the node name or use auto-naming rules based on environment variables or system properties1

Max-business-transactions per node: This property sets the maximum number of business transactions that can be registered on a node. If the number of business transactions exceeds this limit, the agent stops registering new business transactions and reports them as ''All Other Traffic''.You can use the GUI to increase or decrease this limit2

To capture business data for Transaction Analytics, you must first configure a data collector. A data collector is a configuration that specifies what data to capture from a business transaction and how to store it in the analytics platform. You can capture data from HTTP requests, method invocations, custom fields, or information points. You can also apply filters and transformations to the captured data. Once you have configured a data collector, you can use it to enrich the transaction analytics data with business context and enable advanced queries and visualizations

https://docs.appdynamics.com/accounts/en/cisco-appdynamics-saas-deployment-user-management/manage-custom-roles-for-cisco-appdynamics/transaction-analytics-permissions

Error configuration is a feature in AppDynamics that allows you to exclude certain types of errors and exceptions from being reported on the dashboard. You can use error configuration to filter out noise and focus on the most relevant and actionable issues.

According to theError Configuration - AppDynamics, the following types of errors and exceptions can be excluded using error configuration:

Database error return codes: These are codes that indicate a problem with the database server, such as 0x80004005 (access denied) or 0x8000005E (access violation). You can exclude these errors from being reported on the dashboard by adding them to the error configuration list.

JavaScript errors: These are errors that occur in the browser due to invalid or malformed JavaScript code, such as syntax errors or reference errors. You can exclude these errors from being reported on the dashboard by adding them to the error configuration list.

Therefore,A(Database error return codes) andC(JavaScript errors) are two options that can be excluded using error configuration.Reference:

Error Configuration - AppDynamics

Cisco AppDynamics Associate Administrator Certification

[Create and Manage Error and Exception Configurations - AppDynamics]