Setting application recycling settings for COM+ component from code / command line

Setting Application Recycling properties of COM+ application is certainly not possible with .bat script per se. To my knowledge, there is no .NET attribute or System.EnterpriseServices helper for doing that either.

COMAdmin is a way to set COM+ application's properties programmatically. See Configuring COM+ Application Recycling Values MSDN page. The page features sample VB6 code for configuring Application Recycling properties.

Below is straightforward port of MSDN sample to VBScript.

If Not SetMyApplicationRecycling("MyApp", 5, 10, 9, 100, 20) Then
    MsgBox "SetMyApplicationRecycling failed."
End If

Function SetMyApplicationRecycling( _
  strApplicationName, _
  lngLifetimeLimit, _
  lngMemoryLimit, _
  lngCallLimit, _
  lngActivationLimit, _
  lngExpirationTimeout _
)  ' Return False if any errors occur.

    SetMyApplicationRecycling = False  ' Initialize the function.
    On Error Resume Next  ' Initialize error handling.

    Dim objAppCollection
    Dim objApplication
    Set objCatalog = CreateObject("COMAdmin.COMAdminCatalog")
    Set objAppCollection = objCatalog.GetCollection("Applications")
    objAppCollection.Populate
    For Each objApplication In objAppCollection
        With objApplication
            If .Name = strApplicationName Then
                .value("RecycleLifetimeLimit") = lngLifetimeLimit
                .value("RecycleMemoryLimit") = lngMemoryLimit
                .value("RecycleCallLimit") = lngCallLimit
                .value("RecycleActivationLimit") = lngActivationLimit
                .value("RecycleExpirationTimeout") = lngExpirationTimeout
                objAppCollection.SaveChanges                

                MsgBox strApplicationName & _
                  " recycling values are now set to the following: " & _
                  vbNewLine & vbNewLine & _
                  "Lifetime Limit (minutes) = " & lngLifetimeLimit & vbNewLine & _
                  "Memory Limit (KB) = " & lngMemoryLimit & vbNewLine & _
                  "Expiration Timeout (minutes) = " & lngExpirationTimeout & vbNewLine & _
                  "Call Limit = " & lngCallLimit & vbNewLine & _
                  "Activation Limit = " & lngActivationLimit

                SetMyApplicationRecycling = True  ' Successful end to procedure
                Exit For
            End If
        End With
    Next

    Set objApplication = Nothing
    Set objAppCollection = Nothing
    Set objCatalog = Nothing

    If Err.Number <> 0 Then
        MsgBox "Error # " & Err.Number & " (Hex: " & Hex(Err.Number) _
        & ")" & vbNewLine & Err.Description 
        Exit Function
    End If
End Function