数据库备份和恢复数据库再续

SQLDMO(SQL Distributed Management Objects，SQL分布式管理对象)封装了Microsoft SQL Server数据库中的对象。SQLDMO是Microsoft SQL Server中企业管理器所使用的应用程序接口，所以它可以执行很多功能，其中当然也包括对数据库的备份和恢复。

当然要用到 sqldmo 来做这个工作

找到 sqldmo.dll这个文件

C:\Program Files\Microsoft SQL Server\80\Tools\Binn\sqldmo.dll

用.Net框架提供的工具转成受托管代码

tlbimp sqldmo.dll /out: c:\SQLDMO.dll 1using System;

2

3namespace DbService

4{

5 /**//// <summary>

6 /// DbOper类,主要应用SQLDMO实现对Microsoft SQL Server数据库的备份和恢复

7 /// </summary>

8 public sealed class DbOper

9 {

10 /**//// <summary>

11 /// DbOper类的构造函数

12 /// </summary>

13 private DbOper()

14 {

15 }

16

17 /**//// <summary>

18 /// 数据库备份

19 /// </summary>

20 public static void DbBackup()

21 {

22 SQLDMO.Backup oBackup = new SQLDMO.BackupClass();

23 SQLDMO.SQLServer oSQLServer = new SQLDMO.SQLServerClass();

24 try

25 {

26 oSQLServer.LoginSecure = false;

27 oSQLServer.Connect("localhost", "sa", "1234");

28 oBackup.Action = SQLDMO.SQLDMO_BACKUP_TYPE.SQLDMOBackup_Database;

29 oBackup.Database = "Northwind";

30 oBackup.Files = @"d:\Northwind.bak";

31 oBackup.BackupSetName = "Northwind";

32 oBackup.BackupSetDescription = "数据库备份";

33 oBackup.Initialize = true;

34 oBackup.SQLBackup(oSQLServer);

35 }

36 catch

37 {

38 throw;

39 }

40 finally

41 {

42 oSQLServer.DisConnect();

43 }

44 }

45

46 /**//// <summary>

47 /// 数据库恢复

48 /// </summary>

49 public static void DbRestore()

50 {

SQLDMO.Restore restore = new SQLDMO.RestoreClass();

SQLDMO.SQLServer sqlServer = new SQLDMO.SQLServerClass();

try

{

sqlServer.LoginSecure = false;

sqlServer.Connect(Environment.MachineName, "sa", "zzb");

string strSQL = "select spid from master..sysprocesses where dbid=db_id('" + ConfigurationManager.AppSettings["DBName"] + "')";

SqlConnection conn = new SqlConnection(ConfigurationManager.AppSettings["ConnectionString"]);

SqlDataAdapter Da = new SqlDataAdapter(strSQL, conn);

DataTable spidTable = new DataTable();

Da.Fill(spidTable);

for (int iRow = 0; iRow <= spidTable.Rows.Count - 1; iRow++)

{

sqlServer.KillProcess(int.Parse(spidTable.Rows[iRow][0].ToString()));

}

restore.Action = SQLDMO.SQLDMO_RESTORE_TYPE.SQLDMORestore_Database;

restore.Database = ConfigurationManager.AppSettings["DBName"];

restore.Files = Server.MapPath(".." + ConfigurationManager.AppSettings["BackPath"]) + backPath.Text.Trim().ToString();

restore.FileNumber = 1;

restore.ReplaceDatabase = true;

restore.SQLRestore(sqlServer);

Response.Write("<script langauage='javascript'>alert('还原数据库成功')</script>");

}

catch (Exception ex)

{

Lemon.DBUtility.HelperSQL.ShowMsgBox(ex.Message, this.Page);

}

finally

{

sqlServer.DisConnect();

}

}

51 }

}

处理了数据库不能还原，独占排它问题