问题描述
我正在尝试提高我的 ms access 数据库性能,因此我使用以下代码始终保持 FE 和 BE 之间的连接
代码来源: https://www.fmsinc.com/microsoftaccess/performance/linkeddatabase.html
DAO OpenDatabase 方法 要创建到链接数据库的持久连接,请使用 DAO OpenDatabase 方法在 VBA 中打开 MS Access 数据库变量。只要您的应用程序正在运行,就保持此变量处于打开状态。
程序代码 下面的过程支持多个后端数据库。编辑包含数据库列表的部分以匹配您的后端数据库:
Sub OpenAllDatabases(pfInit As Boolean)
' Open a handle to all databases and keep it open during the entire time the application runs.
' Params : pfInit TRUE to initialize (call when application starts)
' FALSE to close (call when application ends)
' Source : Total Visual SourceBook
Dim x As Integer
Dim strName As String
Dim strMsg As String
' Maximum number of back end databases to link
Const cintMaxDatabases As Integer = 2
' List of databases kept in a static array so we can close them later
Static dbsopen() As DAO.Database
If pfInit Then
ReDim dbsOpen(1 To cintMaxDatabases)
For x = 1 To cintMaxDatabases
' Specify your back end databases
Select Case x
Case 1:
strName = "H:\folder\Backend1.mdb"
Case 2:
strName = "H:\folder\Backend2.mdb"
End Select
strMsg = ""
On Error Resume Next
Set dbsOpen(x) = OpenDatabase(strName)
If Err.Number > 0 Then
strMsg = "Trouble opening database: " & strName & vbCrLf & _
"Make sure the drive is available." & vbCrLf & _
"Error: " & Err.Description & " (" & Err.Number & ")"
End If
On Error GoTo 0
If strMsg <> "" Then
MsgBox strMsg
Exit For
End If
Next x
Else
On Error Resume Next
For x = 1 To cintMaxDatabases
dbsOpen(x).Close
Next x
End If
End Sub
OpenAllDatabases True
OpenAllDatabases False
问题:
[无法打开数据库“文件路径”请确保驱动程序可用错误:密码无效。 (3031)] .
当我解密 BE 并重新运行代码时,它运行良好。
如何保持加密并解决此问题?
提前致谢
解决方法
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