Скачать или смотреть Resolving WebLogic MBean Server Remote Connection Issues via JMXConnectorFactory

Learn how to establish a successful remote connection to the `WebLogic MBean Server` using `JMXConnectorFactory` and troubleshoot common issues with this comprehensive guide.
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This video is based on the question https://stackoverflow.com/q/73154412/ asked by the user 'Filip Pitak' ( https://stackoverflow.com/u/5821987/ ) and on the answer https://stackoverflow.com/a/73164930/ provided by the user 'Emmanuel Collin' ( https://stackoverflow.com/u/6316044/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Connecting to WebLogic MBean Server Using JMXConnectorFactory

In the world of Java EE application servers, WebLogic stands out for its robust features, especially when managing resources and monitoring applications. An essential part of this management is utilizing the Java Management Extensions (JMX) to interact with the MBeans. However, users sometimes face challenges when trying to connect remotely through the JMXConnectorFactory.

In this guide, we'll explore how to successfully create a connection to the WebLogic MBean Server using the t3 protocol while addressing common issues like connection failures and infinite loops.



The Problem at Hand

You might be trying to connect to a remote WebLogic server to:

View available MBeans

Monitor sessions and connections across different servers in your domain.

In your case, you noticed an infinite loop when attempting to connect, likely indicating that the connection attempt is failing but is persistently retrying. This can be frustrating and can impede your ability to monitor your WebLogic server effectively.

Initial Setup

You have set your Admin Server with the following startup parameters:

[[See Video to Reveal this Text or Code Snippet]]

Additionally, you have:

Installed the WebLogic server locally (fmw_14.1.1.0.0_wls_lite_quick_generic).

Included wlthint3client.jar in your classpath.

Confirmed that the specified port is open via a telnet test.

Despite these configurations, your attempts to connect remain unsuccessful, resulting in no output beyond the initial connection message.



Proposed Solution

To gain access to the necessary MBeans on the WebLogic server, you need to add an additional JVM property to your server instance. This property is crucial for establishing the connection to the MBean server.

Adding the Required JVM Property

Open Your WebLogic Domain Configuration: Navigate to the configuration settings for your specific WebLogic domain.

Add the JVM Property: Include the following line in your server startup parameters:

[[See Video to Reveal this Text or Code Snippet]]

This property instructs your WebLogic server to use the appropriate MBean server builder, which facilitates the connection to the MBeans required for monitoring.



Final Thoughts

After implementing the suggested changes, restart your WebLogic server and try connecting again using your original connection code. This addition should resolve the infinite loop issue and allow you access to the MBeans for monitoring your server domain and its traffic effectively.

By taking these steps, you'll position yourself to monitor sessions, connections, and other vital parameters of all servers within your WebLogic domain seamlessly.

If you continue to face challenges after implementing this solution, consider reviewing your network settings or firewall configurations to ensure that they are not hindering the connection process.

Happy monitoring!