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06/04/2009 at 08:02PM PDT, ID: 24465903
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8.6

Multi select queries against performance counters in WMI?

Asked by daluu in Windows Management Instrumentation (WMI), Microsoft, Microsoft Operating Systems

Tags: WMI, performance counters, perfmon, SQL

Are there ways to query two different WMI performance counter object collections and merge the result into a single object? I tried using a UNION statement as well as "SELECT table1.col1, table2.col2 FROM table1, table2 WHERE table1.col1 = table2.col1" but that doens't seem to work.

I don't do SQL queries too often, particular multiple table queries, but I think the code is rather fundamental and simple, maybe the problem is with how/what can be queried in WMI?

When the queries are broken up as individual queries, they're fine, just not when I try to mash them up. Running the script, I get a null object error when that happens.

A snippet of code posted below. Help appreciated.
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Dim strComputer, objWMIService, fmtProcColItems
strComputer = "." 
Set objWMIService = GetObject("winmgmts:\\" & strComputer & "\root\CIMV2") 
Set fmtProcColItems = objWMIService.ExecQuery( _
    "SELECT IDProcess, PercentProcessorTime, PrivateBytes, HandleCount FROM Win32_PerfFormattedData_PerfProc_Process WHERE Name LIKE 'Vertical.Wave.ViewPoint%' " &_
    "UNION SELECT NumberBytesinallHeaps FROM Win32_PerfFormattedData_NETFramework_NETCLRMemory WHERE Name LIKE 'Vertical.Wave.ViewPoint%'",,48) 
For Each objItem in fmtProcColItems
    Wscript.Echo "Formatted Perf data:"
    Wscript.Echo "--------------------"
    Wscript.Echo "Process: " & objItem.Name
    Wscript.Echo "ID: " & objItem.IDProcess
    Wscript.Echo "PercentProcessorTime: " & objItem.PercentProcessorTime
    Wscript.Echo "PrivateBytes: " & objItem.PrivateBytes
    Wscript.Echo "Handle Count: " & objItem.HandleCount
    Wscript.Echo "# Bytes in all Heaps: " & objItem.NumberBytesinallHeaps
    Wscript.Echo ""
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[+][-]06/05/09 10:48 AM, ID: 24558684

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About this solution

Zones: Windows Management Instrumentation (WMI), Microsoft, Microsoft Operating Systems
Tags: WMI, performance counters, perfmon, SQL
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Solution Provided By: fredthered
Participating Experts: 1
Solution Grade: A
 
 
[+][-]06/18/09 10:59 AM, ID: 24660052

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