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How does the monitored application, its BT characteristics and load, affect snapshots in the Controller? Updated on 7/30/18 This article describes common issues that can explain why expected snapshots might be missing in the Controller. The issues ...
Question I am trying to start the Java Agent in a WebLogic environment that deploys and starts the Weblogic domains via an ANT script. Where in the Ant target do I place the agent. Has anyone tried to do instrumentation via an Ant script? I added s...
Question Has anyone successfully instrumented a JBoss Fuse environment? Answer Review this blog for the steps someone used for instrumenting JBoss Fuse 6.0.0: http://peter-on-java.blogspot.com/2013/06/setup-appdynamics-for-fuse-esb-in-5.html
This topic provides a firewall-based method to block external access to the Controller MySQL Database by dropping all traffic trying to connect to port 3388. Environment and components Linux such as RHEL, Centos, systems using iptables if your syst...
Updated on 7/30/18 Question We see CLR crashes happening a few times a day. How can I use AppDynamics to determine the root cause of the crashes? Answer One issue usually causes multiple CLR crashes. Here are some places to look to help you find...
This topic describes how transaction correlation works in the Java environment. In principle, it works largely the same for .NET and the other language agents. Transaction correlation enables AppDynamics to do distributed transaction tracing in mod...
Question A number of business transactions are showing up, but they have 0 calls (using data for last one year). Why they would at all show up. If a business transaction was discovered by an agent, that means there was a call for that business transa...
Question What if you see a case using EUM where you are not seeing all the expected Pages/Ajax requests? For example, you observe that the Pages/Ajax grid only shows a few requests, even though in the Browser snapshots view you can see many more t...
Question How does the priority of Custom Pages (Web EUEM/Browser RUM) and business transaction naming work? Answer The priority schemes are different in these two cases. For business transactions, the higher number is the higher priority whereas f...
This may indicate that the agents are not correctly configured. Begin troubleshooting by looking at the server.log file. All log files for Controller are located in the <Controller_Installation_Directory>/logs folder. Error Message Solution ...
This article describes how policies and health rules behave depending on which entities/objects are used in the configuration. You can specify affected entities, such as nodes and tiers, in both Health rules and policies. It is important to underst...
Question How can I use AppD4DB to alert if a database instance goes down? This is not for when an OS goes down. We want to know if SQL Server crashes, for example. Answer Set up a Custom SQL Alert like this: If the SQL Connection is successful...
Symptoms You encounter an issue with the POST to /eumcollector/beacons. JS error is "Request header field X-TS-AJAX-Request is not allowed by Access-Control-Allow-Headers". Diagnosis Research revealed that Access-Control-Allow-Headers is a CORS pr...
You can assign multiple MIDCs to the same class and method or multiple information points to the same class and method. However, you cannot assign more than one type of interceptor to the same class and method in a .NET application. For example, de...
JDBC connection pool metrics are not configured out-of-the-box for GlassFish. To configure them, uncomment the JDBC connection pool section and provide the relevant information in the following file: <agent_home>/ver<version_number>/conf/jmx/ser...
In some situations, JMX metrics from GlassFish are not reported. Also, some metrics may not be enabled by default. Try this solution: Confirm that JMX monitoring is enabled in the GlassFish server. Navigate to the <agent_home>/ver<version_number>/c...
In certain situations, you may encounter the following exception in the agent.log file for the Java Agent deployed on the WebSphere Application Server (WAS). [AD Thread-Transient Event Channel Poller0] 17 Aug 2011 08:14:08,031ERROR JMXTransientOper...
Java Web Start software allows you to download and run Java applications from the web and is included in the Java Runtime Environment (JRE) since release of Java 5.0. Java Web Start applications are launched by using the Java Network Launch Protocol ...
Updated 7/23/18 Issue I am receiving the following notification on the Controller. CONTROLLER_METRIC_DATA_BUFFER_OVERFLOW Explanation This message indicates that the data buffer used to store the metrics is full before these can be flushed ...
Question A count of HTTP error codes appears on the main dashboard. Is there a way to get a list of the specific error codes, such as 301, 401, 404, 500 and so on? Answer In the Controller UI, go to Troubleshoot -> Errors, select the Exceptions tab...
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