Java Trip

JMX, OSB and JMS all went on a pleasant little trip.

Author: Tony K.
Published: March 4, 2020

The article details an exercise in programmatically deleting messages from a JMS error queue within a WebLogic-managed Oracle Service Bus (OSB) cluster using Java Management Extensions (JMX).

Key Steps Covered:

  • Connecting: Utilized the WebLogic client JAR via standard protocols (t3, t3s, http, https, iiop, iiops).
  • Navigating: Traversed the hierarchical WebLogic MBean tree structure to locate the target queue.
  • Inspecting & Invoking: Used MBean operations to inspect messages. (Note: The original article includes an uncaptioned reference image here).
  • Deleting Messages: Rather than using a non-existent singular delete method, the process requires invoking deleteMessages combined with a SQL-like message selector:
connection.invoke( 
  jmsDestination, 
  "deleteMessages", 
  new Object[] {"JMSMessageID='XXX'"}, 
  new String[] {"java.lang.String"} 
);

For the complete, unedited text and original formatting, please refer to the source article on LinkedIn.