Network Management

Nodes report differently on WMI: Last Boot Time Null

Virtual Windows server polling SNMP reports fine for Last Boot Time and CPU and memory information, when swapped to WMI, the Last Boot Time changes to NULL on the database, resulting in a time in the past and Resource states Data is not available.Monitor C:\Windows\Temp\SolarWinds\JobEngine.v2 for Old ShadowCopyCache files Stop/Start JobEngineV2 service

First published date

10/25/2018 1:46 AM

Last published date

4/23/2022 1:00 AM

Overview

Virtual Windows server polling SNMP reports as expected for Last Boot Time and CPU and memory information, but when swapped to WMI, the Last Boot Time changes to NULL on the database, resulting in a time in the past. Resource states Data is not available.

 

Check NodesDetail (Nodes (View))table forreboot time,  may say NULL

 

Running WBEMTEST query for: 

select LastBootUpTime from Win32_OperatingSystem  gives the correct time.

Product section

Network Performance Monitor

Cause

ShadowCopyCache files froze the polled information from the node.

Resolution

  1. Monitor C:\Windows\Temp\SolarWinds\JobEngine.v2 for Old ShadowCopyCache files.
  2. Stop or Start JobEngineV2 service. The window should flash and rebuild the folder, drill back into it and check that the folders are recycling.
  3. Poll Node Details and check that the information is Polling correctly again. 
  4. Check NodesDetail (Nodes (View)) table for correct reboot time.