Question

场景：

我正在使用SQL Server 2008 R2数据库服务器处理C＃windows窗体应用程序。所有事情都进展顺利，即使我能够创建数据库备份，但是当我以编程方式恢复它时，它会给我错误“ RESTORE无法处理数据库'Test_DB'，因为此会话正在使用它。建议在执行此操作时使用master数据库。 RESTORE DATABASE异常终止。“ 这是我的备份和恢复程序

          //   back up code

        try
        {
            SaveFileDialog sd = new SaveFileDialog();
            sd.Filter = "SQL Server database backup files|*.bak";
            sd.Title = "Create Database Backup";


            if (sd.ShowDialog() == DialogResult.OK)
            {
                using (SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["dbConnection"].ConnectionString))
                {

                    string sqlStmt = string.Format("backup database Test_DB to disk='{0}'", sd.FileName);
                    using (SqlCommand bu2 = new SqlCommand(sqlStmt, conn))
                    {
                        conn.Open();
                        bu2.ExecuteNonQuery();
                        conn.Close();

                        DevComponents.DotNetBar.MessageBoxEx.Show("Backup Created Sucessfully");
                    }

                }
            }
        }

        catch (Exception)
        {
            MessageBox.Show("Backup Not Created");
        }
 // Restore backup Code


        try
        {
            OpenFileDialog od = new OpenFileDialog();
            od.Filter = "SQL Server database Restore files|*.bak";
            od.Title = "Restore Database Backup";


            if (od.ShowDialog() == DialogResult.OK)
            {
                using (SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["dbConnection"].ConnectionString))
                {
                        string sqlStmt = string.Format("Restore database Test_DB from disk='{0}'", od.FileName);
                        using (SqlCommand bu2 = new SqlCommand(sqlStmt, conn))
                        {
                            conn.Open();
                            bu2.ExecuteNonQuery();
                            conn.Close();
                            DevComponents.DotNetBar.MessageBoxEx.Show("Database Retored Sucessfully", "Success Message!");
                        }

                }
            }
        }

        catch (Exception)
        {
            MessageBox.Show("Database didn't Restore","Error Message!");
        }

我感谢任何机构提供的任何帮助。感谢。

Answer 1

错误消息不言自明。您需要更改连接字符串，而不是initial catalog=test_db，而是initial_catalog=master。或者在运行还原之前将数据库上下文更改为master。

Answer 2

// Restore backup Code


        try
        {
            OpenFileDialog od = new OpenFileDialog();
            od.Filter = "SQL Server database Restore files|*.bak";
            od.Title = "Restore Database Backup";


            if (od.ShowDialog() == DialogResult.OK)
            {
                using (SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["dbConnection"].ConnectionString))
                {
                        conn.Open();
                        string UseMaster = "USE master";
                        SqlCommand UseMasterCommand = new SqlCommand(UseMaster, conn);
                        UseMasterCommand.ExecuteNonQuery();

                        string Alter1 = @"ALTER DATABASE [Test_DB] SET Single_User WITH Rollback Immediate";
                        SqlCommand Alter1Cmd = new SqlCommand(Alter1, conn);
                        Alter1Cmd.ExecuteNonQuery();

                        string Restore = string.Format("Restore database Test_DB from disk='{0}'", od.FileName);
                        SqlCommand RestoreCmd = new SqlCommand(Restore, conn);
                        RestoreCmd.ExecuteNonQuery();

                        string Alter2 = @"ALTER DATABASE [Test_DB] SET Multi_User";
                        SqlCommand Alter2Cmd = new SqlCommand(Alter2, conn);
                        Alter2Cmd.ExecuteNonQuery();
                        conn.Close();
                           DevComponents.DotNetBar.MessageBoxEx.Show("Database Retored Sucessfully", "Success Message!");

                }
            }
        }

        catch (Exception)
        {
            MessageBox.Show("Database didn't Restore", "Error Message!");
        }

错误：RESTORE无法处理数据库'Test_DB'，因为此会话正在使用它

2 个答案: