DX UIM Java Probes Fail to Start After CU6 Upgrade Due to JRE Extraction Failure

Products

• DX Unified Infrastructure Management (Nimsoft / UIM)

Issue/Introduction

After upgrading to DX Unified Infrastructure Management (UIM) 23.4 CU6, core Java-based probes—including prediction_engine, baseline_engine, PPM, and CRS—fail to initialize and enter a "Max Restarts" or deactivated state. This issue occurs when the java21_jre package fails to extract correctly during the upgrade process, preventing the Java Virtual Machine (JVM) from launching.

 

Symptoms:

• Probes remain gray (deactivated) or red (failed) in Infrastructure Manager or Admin Console.
• Probes fail to obtain a Port or PID.
• Controller logs report errors indicating the system cannot find the specified Java executable.
• Manual execution of Java from the command line returns errors or is non-responsive.

Environment

• Product: DX Unified Infrastructure Management (UIM)
• Release: 23.4 CU6
• Impacted Probes: prediction_engine, baseline_engine, ppm, crs, and other Java-dependent probes.

Cause

The java21_jre package, a prerequisite for CU6 core probes, does not complete its extraction during the automated upgrade. This leaves the bin/java.exe file missing or inaccessible, preventing the probes from starting.

Resolution

To resolve this issue, manually verify the Java installation and redeploy the JRE package if necessary.

1. Verify Java Installation:

   • Navigate to the Java bin directory on the affected Robot (typically ...\Nimsoft\jre\jre21\bin).
   • Open a command prompt as an Administrator.
   • Run the following command:
     text

      

     java -version

   • If the command fails or reports that the file is missing, proceed to step 2.

2. Re-deploy Java Package:

   • Open Infrastructure Manager or Admin Console.
   • Locate the java_jre21 package in the local archive.
   • Drag and drop the java_jre21 package to the impacted Robot/Hub to force a clean extraction.

3. Activate Probes