VB Script: check for existing open session

[Former Member]

I use the code below often.  It is part of many automated processes I call from some function modules in Access as a step in a macro.  As the code is written now, it kills any existing connection or session and logs me in and runs whatever procedures I have.  The problem with this is I also work in SAP throughout the day and my automated script kicks me out periodically.  I can have up to 5 sessions open at once.  I have no clue how to make the script below do the following:

1. First, check if an open session exists.

2. If a session exists, open a new one.

3. If 5 open sessions exist, pause and generate a message box alerting me that "5 sessions already exist"

Function GrabOrdersToday()

Dim Application As Variant

Set SapGuiAuto = GetObject("SAPGUI")

     Set Application = SapGuiAuto.GetScriptingEngine

     Set Connection = Application.OpenConnection("PRD")

     Set SapSession = Connection.Children(0)

If IsObject(WScript) Then

     WScript.ConnectObject SapSession, "on"

     WScript.ConnectObject Application, "on"

End If

SapSession.findById("wnd[0]/usr/txtRSYST-BNAME").Text = "myuserid"

SapSession.findById("wnd[0]/usr/pwdRSYST-BCODE").Text = "mypassword"

SapSession.findById("wnd[0]/usr/pwdRSYST-BCODE").SetFocus

SapSession.findById("wnd[0]/usr/pwdRSYST-BCODE").caretPosition = 8

SapSession.findById("wnd[0]").sendVKey 0

'In case you are already logged in...

If SapSession.Children.Count > 1 Then

     SapSession.findById("wnd[1]/usr/radMULTI_LOGON_OPT1").Select

     SapSession.findById("wnd[1]/usr/radMULTI_LOGON_OPT1").SetFocus

     SapSession.findById("wnd[1]/tbar[0]/btn[0]").press

End If

...and then my actual script starts here where I run transactions or whatever I need.  I picked up this code a long time ago and it looks like it has some sort of If statement that is supposed to check for a login, but it doesn't.  Every time this code runs, it kills the existing session and logs me into SAP all over again.  I only want it to log me into SAP if no current session exists.  Thanks in advance for any help!

[holger_khn]

Sub Get_all_SAP_Sessions()
    Dim SapGuiAuto As Object
    Dim i%
    Dim iSession%
    Dim sapapplication
    Dim Connection As SAPFEWSELib.GuiConnection
    Dim Session As SAPFEWSELib.GuiSession
    Dim strSessions$
    i = 1
    iSession = 0
    ' There may be bad entries in the ROT from previous crashes
    While i < 10 And SapGuiAuto Is Nothing
       i = i + 1
       On Error Resume Next
       Set SapGuiAuto = GetObject("SAPGUI")
       On Error GoTo 0
    Wend
    If SapGuiAuto Is Nothing Then
        MsgBox "Could not connect to SAPlogon process. Did you start it?"
        Exit Sub
    End If
    
    On Error Resume Next
    Set sapapplication = SapGuiAuto.GetScriptingEngine
    Set SapGuiAuto = Nothing
    On Error GoTo 0
    If sapapplication Is Nothing Then
        MsgBox "Could not access GuiApplication. Maybe Scripting is disabled?"
        Exit Sub
    End If
    Set SapGuiAuto = Nothing
    
    For Each Connection In sapapplication.Children
        If Not Connection.DisabledByServer Then
            For Each Session In Connection.Children
                If Session.Busy = False Then
                    iSession = iSession + 1
                    strSessions = strSessions & iSession & " => " & (Session.Info.SystemName & _
                    " (" & CStr(Session.Info.SessionNumber) & _
                    ") (" & Session.Info.Client & ") | User: " & _
                    Session.Info.User & " | Transaction: " & _
                    Session.Info.Transaction) & vbCrLf & iSession & " => System-ID: " & Session.ID & vbCrLf
                End If
            Next
        End If
    Next
    MsgBox strSessions
End Sub

Above an example how I achieve to get all available SAP Sessions. Additional I implement an check if a Session is busy. In this case it will skip to get session info as this will block the check macro.

Holger