Sub BackupDatabase(SQL_SERVER_NAME As String, USER_ID As String, USER_PASSWORD As String, DATABASE_NAME As String)
On Error GoTo BackupError
Dim strBackupFile As String
strBackupFile = Replace(CurDir() & "\BackupFiles\", "\\", "\") & DATABASE_NAME & GetRndNo() & ".BAK"
Do While Dir(strBackupFile) <> ""
strBackupFile = Replace(CurDir() & "\BackupFiles\", "\\", "\") & DATABASE_NAME & GetRndNo() & ".BAK"
Loop
Dim OBJ_SQL_SERVER As New SQLDMO.SQLServer
OBJ_SQL_SERVER.Connect SQL_SERVER_NAME, USER_ID, USER_PASSWORD
Dim OBJ_SQL_DEVICE As New SQLDMO.BackupDevice
OBJ_SQL_DEVICE.Name = "Backup_Device_" & GetRndNo()
OBJ_SQL_DEVICE.Type = SQLDMODevice_DiskDump
OBJ_SQL_DEVICE.PhysicalLocation = strBackupFile
OBJ_SQL_SERVER.BackupDevices.Add OBJ_SQL_DEVICE
Dim OBJ_SQL_BACKUP As New SQLDMO.Backup
OBJ_SQL_BACKUP.Database = DATABASE_NAME
OBJ_SQL_BACKUP.Devices = OBJ_SQL_DEVICE.Name
OBJ_SQL_BACKUP.SQLBackup OBJ_SQL_SERVER
OBJ_SQL_SERVER.BackupDevices.Remove (1)
Set OBJ_SQL_BACKUP = Nothing
Set OBJ_SQL_DEVICE = Nothing
OBJ_SQL_SERVER.DisConnect
Set OBJ_SQL_SERVER = Nothing
msgbox "备份成功!"
Exit Sub
BackupError:
msgbox "备份失败!"
End Sub
Private Function GetRndNo() As String
Randomize
GetRndNo = CStr(Int(99999999 * Rnd))
End Function
'*********************************************************
'* 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 '''''''''''''''''''''''''''''''''''''''''''''
'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