Exporting graphs from OC fails: "Report Export Failed"

Products

• DX Unified Infrastructure Management (Nimsoft / UIM)

Issue/Introduction

Metric Viewer Graphs PDF export may fail with error: "Report Export Failed". 

Environment

DX UIM 23.4.*

Cause

When Selecting "RAW Aggregation" for long periods (>1 month) too many Raw data points are to be loaded into the PDF and the Report Engine requires increased resources which can result is resources exhaustion and generate this error.  This issue is more likely to occur for QOS Object that have very low QOS Interval (Example 1 minute or lower) and when the reports is generated for long periods and Raw Aggregation. 

For example, 3 month data with 1 minute raw aggregation interval is 131,500 single data points in one single graph. 

Resolution

To avoid/alleviate the issue, adopt one of the following approaches: 

• Use Aggregation level other than raw (5 minutes).
  Using aggregation different from raw reduces significantly the number of data points and time and resources needed to generate the report.  
  
  
  
• If Raw data is needed in the graph, make a report for shorter periods (<1 month)
  Shorter periods reduce significantly the number of data points
  
  
• Increase memory allocation in the OC wasp probe . Eg. values to incremement in wasp.cfg. (Increment the memory until it is able to generate the highly memory demanding report)
  
      <opt>
        java_mem_max = -Xmx8192m
        java_mem_init = -Xms2048m
    </opt>



• Use higher QOS interval rates on the monitoring probe control properties.