http://expert.csdn.net/Expert/topic/2349/2349825.xml?temp=.2858545 1: 'sql server 的备份方法 If CN.State = adStateOpen Then CN.Close CN.ConnectionTimeout = 10 connstr = "Driver={SQL Server};Server=" & LocalServer & ";UID=" & LocalUser & ";PWD=" & LocalPw & ";DATABASE=" & LocalDb CN.Open connstr Nowtime = Format(Now, "hh-mm-ss") dd = str(Date) riqi = dd + "-" + NowtimeSql = "BACKUP DATABASE tablename TO disk='D:\mssql7\BACKUP\tablename" & riqi & "' with noinit" CN.Execute (Sql) 2:引用Microsoft SQLDMO Object Library 进行sql server数据库备份 添加进度条ProgressBar1控件 '声明 Public WithEvents bkps As SQLDMO.Backup '数据库备份操作 Private Sub Command3_Click() Dim oSvr As SQLDMO.SQLServer Set oSQLServer = CreateObject("SQLDMO.SQLServer") oSQLServer.LoginSecure = False oSQLServer.Connect ("(local)"), ("sa"), ("")'连接服务器 Screen.MousePointer = 11 Set bkps = CreateObject("SQLDMO.Backup") bkps.Database = "db"'指定需备份的数据库 bkps.Action = 0 bkps.Files = "c:\backup\db.bak"'指定备份文件 bkps.Initialize = True ProgressBar1.Value = 0 ProgressBar1.max = 100 Screen.MousePointer = 0 DoEvents Err = 0 bkps.SQLBackup oSQLServer Screen.MousePointer = 11 ProgressBar1.Value = 100 DoEvents Set bkps = Nothing Screen.MousePointer = 0 MsgBox "数据库备份完成" End Sub '显示进度 Private Sub bkps_PercentComplete(ByVal Message As String, ByVal Percent As Long) ProgressBar1.Value = ProgressBar1.max * (Percent / 100) End Sub
备份时ProgressBar1显示进度,恢复操作方法相同。注意以上程序未加错误处理。********************************************************* '* 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 '''''''''''''''''''''''''''''''''''''''''''''如果当前没有与要恢复的数据库立连接,则不需要加单引号中的内容。如果希望恢复数据库之后继续建立连接,则需要写这部分代码。我要恢复数据库名称为student1,备份数据库的时候是在连接状态下进行的,但是恢复数据库不可以在数据库存在连接的状态下进行操作!代码的解决方法是:先连接SQL Server中主库master 库,在该库中的sysprocesses表中存放着所有连接到此数据库的连接信息,将这些连接信息用Kill语句删除。然后再恢复数据库student1,由于用Kill语句后,数据库已经被断开,所以在恢复完成后,再用系统最初的连接数据库代码连接上数据库student1。
1:
'sql server 的备份方法
If CN.State = adStateOpen Then CN.Close
CN.ConnectionTimeout = 10
connstr = "Driver={SQL Server};Server=" & LocalServer & ";UID=" & LocalUser & ";PWD=" & LocalPw & ";DATABASE=" & LocalDb
CN.Open connstr
Nowtime = Format(Now, "hh-mm-ss")
dd = str(Date)
riqi = dd + "-" + NowtimeSql = "BACKUP DATABASE tablename TO disk='D:\mssql7\BACKUP\tablename" & riqi & "' with noinit"
CN.Execute (Sql)
2:引用Microsoft SQLDMO Object Library 进行sql server数据库备份
添加进度条ProgressBar1控件
'声明
Public WithEvents bkps As SQLDMO.Backup
'数据库备份操作
Private Sub Command3_Click()
Dim oSvr As SQLDMO.SQLServer
Set oSQLServer = CreateObject("SQLDMO.SQLServer")
oSQLServer.LoginSecure = False
oSQLServer.Connect ("(local)"), ("sa"), ("")'连接服务器
Screen.MousePointer = 11
Set bkps = CreateObject("SQLDMO.Backup")
bkps.Database = "db"'指定需备份的数据库
bkps.Action = 0
bkps.Files = "c:\backup\db.bak"'指定备份文件
bkps.Initialize = True
ProgressBar1.Value = 0
ProgressBar1.max = 100
Screen.MousePointer = 0
DoEvents
Err = 0
bkps.SQLBackup oSQLServer
Screen.MousePointer = 11
ProgressBar1.Value = 100
DoEvents
Set bkps = Nothing
Screen.MousePointer = 0
MsgBox "数据库备份完成"
End Sub
'显示进度
Private Sub bkps_PercentComplete(ByVal Message As String, ByVal Percent As Long)
ProgressBar1.Value = ProgressBar1.max * (Percent / 100)
End Sub
备份时ProgressBar1显示进度,恢复操作方法相同。注意以上程序未加错误处理。*********************************************************
'* 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 '''''''''''''''''''''''''''''''''''''''''''''如果当前没有与要恢复的数据库立连接,则不需要加单引号中的内容。如果希望恢复数据库之后继续建立连接,则需要写这部分代码。我要恢复数据库名称为student1,备份数据库的时候是在连接状态下进行的,但是恢复数据库不可以在数据库存在连接的状态下进行操作!代码的解决方法是:先连接SQL Server中主库master 库,在该库中的sysprocesses表中存放着所有连接到此数据库的连接信息,将这些连接信息用Kill语句删除。然后再恢复数据库student1,由于用Kill语句后,数据库已经被断开,所以在恢复完成后,再用系统最初的连接数据库代码连接上数据库student1。
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收藏起来了
就是有点不大懂
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我运行到这个地方总是出错~~实时错误
【SQL-DMO】代码执行异常错误:Exception_access_vioation啥意思啊??我的QQ:15509谢谢!