Monitor Active Directory Database Performance

Uses cooked performance counters to monitor the performance of the Active Directory database on a domain controller

strComputer = "."
Set objWMIService = GetObject("winmgmts:" _
    & "{impersonationLevel=impersonate}!\\" & strComputer & "\root\cimv2")
Set colDatabases = objWMIService.ExecQuery _
    ("Select * from Win32_PerfFormattedData_Esent_Database " _
        & "Where Name = 'NT Directory'")
For Each objADDatabase in colDatabases
    Wscript.Echo "Database cache hit percent: " & _
        objADDatabase.DatabaseCachePercentHit
Next

This is a VB Script, this can be used by saving the file in .vbs file