********************************************************* '* 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。
'得到还原后的数据库存放目录,如果没有指定,存放到SQL SERVER的DATA目录 If sDataBasePath = "" Then iSql = "select filename from master..sysfiles" iRe.Open iSql, iDb, adOpenKeyset, adLockReadOnly iSql = iRe(0) iRe.Close sDataBasePath = Left(iSql, InStrRev(iSql, "\")) End If
'检查数据库是否存在 If sReplaceExist = False Then iSql = "select 1 from master..sysdatabases where name='" & sDataBaseName & "'" iRe.Open iSql, iDb, adOpenKeyset, adLockReadOnly If iRe.EOF = False Then iReturn = "数据库已经存在!" iRe.Close GoTo lbExit End If iRe.Close End If
'* 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。
yoki仁兄的代码,我照搬到我的应用中,虽然提示备份成功,但在我指定的目录中没有备份数据文件。我是通过局域网在客户端备份,原码如下:
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
'material是需要备份的数据库名称
s_dataexport = "backup database material to disk='" + CommonDialog1.FileName + "'"
cn.Open "driver={sql server};server=192.168.4.11;database=material;persist security info=false; uid=sa" '数据库连接字符串 192.168.4.11是数据库服务器
''cn.Open "PROVIDER=MSDASQL;DSN=material;persist security info=false; uid=sa;pwd=;"
'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
还请yoki兄能指点一二,如果yoki兄能将示例e-mail给我,我将不胜感激!!!
我的E-Mail:[email protected]
'调用:frestoredatabase_a "备份文件名","数据库名"
'备份文件如果在客户端上,应该用共享路径的方式
Public Function fRestoreDatabase_a(ByVal sBackUpfileName$ _
, ByVal sDataBaseName$ _
, Optional ByVal sDataBasePath$ = "" _
, Optional ByVal sBackupNumber& = 1 _
, Optional ByVal sReplaceExist As Boolean = False _
) As String
Dim iDb As ADODB.Connection, iRe As ADODB.Recordset
Dim iConcStr$, iSql$, iReturn$, iI&
'On Error GoTo lbErr
'创建对象
Set iDb = New ADODB.Connection
Set iRe = New ADODB.Recordset
'连接数据库服务器
iConcStr = "Provider=SQLOLEDB.1;Integrated Security=SSPI;Persist Security Info=False;Data Source=zj"
iDb.Open iConcStr
'得到还原后的数据库存放目录,如果没有指定,存放到SQL SERVER的DATA目录
If sDataBasePath = "" Then
iSql = "select filename from master..sysfiles"
iRe.Open iSql, iDb, adOpenKeyset, adLockReadOnly
iSql = iRe(0)
iRe.Close
sDataBasePath = Left(iSql, InStrRev(iSql, "\"))
End If
'检查数据库是否存在
If sReplaceExist = False Then
iSql = "select 1 from master..sysdatabases where name='" & sDataBaseName & "'"
iRe.Open iSql, iDb, adOpenKeyset, adLockReadOnly
If iRe.EOF = False Then
iReturn = "数据库已经存在!"
iRe.Close
GoTo lbExit
End If
iRe.Close
End If
'获取数据库恢复信息
iSql = "restore filelistonly from disk='" & sBackUpfileName & "'" & vbCrLf & _
"with file=" & sBackupNumber
iRe.Open iSql, iDb, adOpenKeyset, adLockReadOnly
'生成数据库恢复语句
iSql = "restore database [" & sDataBaseName & "]" & vbCrLf & _
"from disk='" & sBackUpfileName & "'" & vbCrLf & _
"with file=" & sBackupNumber & vbCrLf
With iRe
While Not .EOF
iReturn = iRe("PhysicalName")
iI = InStrRev(iReturn, ".")
iReturn = IIf(iI = 0, "", Mid(iReturn, iI)) & "'"
iSql = iSql & ",move '" & iRe("LogicalName") & _
"' to '" & sDataBasePath & sDataBaseName & iReturn & vbCrLf
.MoveNext
Wend
.Close
End With
iSql = iSql & IIf(sReplaceExist, ",replace", "")
iDb.Execute iSql
iReturn = ""
GoTo lbExit
lbErr:
iReturn = Error
lbExit:
fRestoreDatabase = iReturn
End Function