Access Engine & Windows NT Net 
Author Message
 Access Engine & Windows NT Net

Hi VB folks!

Me and my friend have written a vb program using the Access 1.0 Engine.
My platform is a DX40 with WfW 3.11.
As we installed it in a net with Windows NT server we had a problem:

The program tries to open a database on the server for read/write operations.
If this fails, it knows somebody else has opened it before and opens it only for read
operations.

This works fine when the program runs on the server machine itself, but starting it
on a Windows 3.1
client, opening the database takes up to 3 or 4 minutes.
Opening a database which is closed works everywhere fine!

We can't decide if the problem is at the server installation or at our db-routines.

The code to open the database is given below.

Can you help us?

ThanX in advance,

Function db_PrjInit (ByVal PrjName As String, Pfad As String, Zustand As Integer) As
Integer

32960     Dim idx_Projekte%
32962     Dim Fehler%
32964     Dim Filter$
32966     Dim Tries%

32968     Fehler% = ERR_OK
32970     Tries% = 0
32972     Zustand = LESEN_SCHREIBEN

32974     On Error GoTo ErrHandlerPrjInit

32976     tbProjekte.Index = "BV_Bezeichnung"
32978     tbProjekte.Seek "=", PrjName

32980     idx_Projekte = tbProjekte("idx_Projekte")

32982     PrjPfad = SystemPfad & "\" & Format$(idx_Projekte, "00000000")

32984     Set dbProjekt = OpenDatabase(PrjPfad & "\prjdaten.mdb", False, False)

32986     Set tbZeichnungen = dbProjekt.OpenTable("Zeichnungen", DB_DENYWRITE)

32988     On Error GoTo 0

32990     If Zustand = NUR_LESEN Then

32992   Set tbProjektBeteiligte = dbProjekt.OpenTable("ProjektBeteiligte",
DB_READONLY)

' ...

33012   Set qryPrjBeteiligterZeichnungsInfo =
dbProjekt.OpenQueryDef("PrjBeteiligterZeichnungsInfo")

33014     Else

33016   Set tbProjektBeteiligte = dbProjekt.OpenTable("ProjektBeteiligte")
33018   Set tbbergabeBelege = dbProjekt.OpenTable("bergabebel?ge")

' ...

33036   Set qryPrjBeteiligterZeichnungsInfo =
dbProjekt.OpenQueryDef("PrjBeteiligterZeichnungsInfo")

33038     End If

33040     Pfad = PrjPfad

33042     db_PrjInit = Fehler%

33044 Exit Function

ErrHandlerPrjInit:

    Select Case Err

    Case 3009: ' DatenBank bereits durch den eigenen Proze? gesperrt

33046     Resume Next

    Case 3049:  ' Die DatenBank ist besch?digt!

33048     If DEBUGING Then MsgBox "DatenBank in Verzeichnis " & PrjPfad & " ist
besch?digt und wird repariert!"

33050     RepairDatabase (PrjPfad & "\prjdaten.mdb")

33052     Tries% = Tries% + 1

33054     If Tries% > 2 Then

33056         db_PrjInit = ERR_PROJEKT_INIT
33058         On Error GoTo 0

33060         Exit Function

33062     End If

33064     Resume 0

    Case 3261:  ' DatenBank ist durch anderen Proze? gesperrt

33066     Set tbZeichnungen = dbProjekt.OpenTable("Zeichnungen", DB_READONLY)

33068     Zustand = NUR_LESEN

33070     Resume Next

    Case Else:  ' Sonstiger Fehler!

33072     If DEBUGING Then MsgBox "PrjInit :Fehler " & Err & "  " & Erl

33074     db_PrjInit = ERR_PROJEKT_INIT

33076     On Error GoTo 0

33078     Exit Function

33080     End Select

End Function



Mon, 02 Feb 1998 03:00:00 GMT  
 
 [ 1 post ] 

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