BlogJava-飞鸟JAVA-文章分类-VBhttp://www.blogjava.net/yczz/category/19205.htmlzh-cnWed, 28 Feb 2007 03:14:44 GMTWed, 28 Feb 2007 03:14:44 GMT60VB实现SQL SERVER2000数据库备份还原http://www.blogjava.net/yczz/articles/93658.html飞鸟飞鸟Sat, 13 Jan 2007 13:25:00 GMThttp://www.blogjava.net/yczz/articles/93658.htmlhttp://www.blogjava.net/yczz/comments/93658.htmlhttp://www.blogjava.net/yczz/articles/93658.html#Feedback0http://www.blogjava.net/yczz/comments/commentRss/93658.htmlhttp://www.blogjava.net/yczz/services/trackbacks/93658.html'* 名称：BackupDatabase
'* 功能：备份数据库
'* 控件：一个文本框和两个按钮（备份到和确定）
'*********************************************************
Public Sub BackupDatabase()
Dim cn As New ADODB.Connection
Dim s_path, s_dataexport As String
s_path = App.Path
Me.MousePointer = 11   '设置鼠标指针形状
'student1是需要备份的数据库名称
s_dataexport = "backup database student1 to disk='" + CommonDialog1.FileName + "'"
cn.Open "driver={sql server};server=" & d1 & ";database=student1;persist security info=false; userid=sa"  '数据库连接字符串
'这里不需要连接master数据库，即可完成备份
cn.BeginTrans
cn.Execute s_dataexport
Err.Number = 0
If Err.Number = 0 Then
    cn.CommitTrans
    MsgBox "数据备份成功！", vbInformation, "提示"
    MsgBox "数据备份文件存放路径:" & CommonDialog1.FileName, vbOKOnly, "提示"
    Unload Me
Else
    cn.RollbackTrans
    MsgBox "数据备份失败！请检查数据库是否正在打开！", vbCritical, "提示"
End If
cn.Close
Set cn = Nothing
Me.MousePointer = 1
End Sub



'*********************************************************
'* 名称：RestoreDataBase
'* 功能：还原数据库
'* 控件：一个文本框和两个按钮（ 打开和确定）
'*********************************************************
Public Sub RestoreDataBase()
If Text1.Text = "" Then
    MsgBox "请选择要恢复的数据文件！", vbInformation, "提示"
    Exit Sub
Else
    ret = MsgBox("数据恢复操作将会覆盖以前的所有数据并且覆盖后无法恢复，您确定要进行恢复操作吗？", vbQuestion + vbOKCancel, "提示")
    If ret = vbOK Then
       Dim cn As New ADODB.Connection
       Dim sn As New ADODB.Recordset
       Dim s_restore As String
       Me.MousePointer = 11
       cn.Open "Provider=SQLOLEDB.1;Persist Security Info=False;server=" & d1 & ";Initial Catalog=master;Data Source=127.0.0.1;user id=sa;password=" & d3 & ""
       sn.Open "select  spid  from  sysprocesses  where  dbid=db_id('student1')", cn
        Do While Not sn.EOF
          cn.Execute "kill " & sn("spid")
          sn.MoveNext
        Loop
        sn.Close
        s_restore = "restore database student1 from disk='" + Trim(Text1.Text) + "'  with REPLACE"
        cn.Execute s_restore
         'Debug.Print gs_conn_string
         '此时需要连接master数据库才能完成数据恢复操作
         '同上student1为需要恢复的数据库
        s_restore = "restore database student1 from disk='" + Trim(Text1.Text) + "'"
         'text1一个用于记录需要恢复文件的地址的textbox
        cn.Execute s_restore
        cn.BeginTrans
        If Err.Number = 0 Then
            cn.CommitTrans
            MsgBox "数据恢复成功！", vbInformation, "提示"
            Command1.Enabled = True
            Label1.Visible = False
        Else
            cn.RollbackTrans
            MsgBox "数据恢复失败！", vbCritical, "提示"
            Command1.Enabled = True
        End If
        cn.Close
        Set cn = Nothing
        Me.MousePointer = 1
    Else
        Exit Sub
    End If                      '''''''''''''''''''''''''''''''''''''''''
    On Error Resume Next
    Dim DBC As New DataBaseConnection
    If db.State = 1 Then
       db.Close
    End If
    db.ConnectionString = DBC.SqlConnectString(d1, d2, d3)
    rs.CursorType = adOpenDynamic
    rs.CursorLocation = adUseClient
    rs.LockType = adLockOptimistic
    db.CursorLocation = adUseClient
    db.Open
    Set cmd.ActiveConnection = db
    If Err.Number Then
       MsgBox Err.Description, 16 + vbOKOnly, Err.Number
       Exit Sub
    End If
    db.DefaultDatabase = "student1"
    If Err.Number Then
       MsgBox Err.Description, 16 + vbOKOnly, Err.Number
       Exit Sub
    End If
End If
End Sub                      '''''''''''''''''''''''''''''''''''''''''''''

飞鸟 2007-01-13 21:25 发表评论
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