数据库备份和恢复操作

博主说：

-- 备份数据库
backup database db_CSManage to disk='c:\backup.bak'
-- 还原数据库，必须先备份该数据库的日志文件到原先的备份文件中
backup log db_CSManage to disk='c:\backup.bak'
restore database db_CSManage from disk='c:\backup.bak'

但在还原数据库时报错误

似乎他少写了一句话，改成这样就好了

-- 备份数据库
backup database OA to disk='d:\backup.bak'

-- 备份该数据库的日志文件到原先的备份文件中
backup LOG OA to disk='d:\backup.bak' WITH NORECOVERY
--还原数据库，
restore database OA from disk='d:\backup.bak' WITH STATS = 10,RECOVERY;

结果：

 

好了，知道这个后直接在项目中执行该sql语句即可。

但是有个坑点，在项目开发中，数据库备份的在安装数据库的那台电脑上，并不在vs项目文件夹中，需下载回本地

MVC控制器备份数据库：

/// <summary>
        /// 备份数据文件
        /// </summary>
        /// <param name="dbName"></param>
        /// <param name="dbBackupName"></param>
        /// <returns></returns>
        public ActionResult Backuping(string dbName, string dbBackupName)
        {
            if (dbName == null || dbName.Length == 0)
                return Json(new { msg = false, error = "输入的数据库不存在！" }, JsonRequestBehavior.AllowGet);

            string path = ConfigurationManager.AppSettings["DbBackPath"] + dbName + "/" + DateTime.Now.ToString("yyyyMMdd");
            //path = Server.MapPath(path);路径只能是服务器上的

            //如果路径不存在就创建文件夹
            if (!Directory.Exists(path))
            {
                Directory.CreateDirectory(path);
            }

            //判断文件是否已存在
            string filePath = path + "/" + dbBackupName.Trim() + ".bak'";
            if (System.IO.File.Exists(filePath))
            {
                System.IO.File.Delete(filePath);
            }
            string str = ConfigurationManager.ConnectionStrings[dbName].ToString();
            using (SqlConnection con = new SqlConnection(str))
            {

                string strBacl = "backup database " + dbName + " to disk='" + filePath;

                using (SqlCommand Cmd = new SqlCommand(strBacl, con))
                {
                    con.Open();
                    if (Cmd.ExecuteNonQuery() != 0)
                    {
                        con.Close();
                        return Json(new { succeed = true, filePath = filePath, error = "备份数据库成功！" }, JsonRequestBehavior.AllowGet);
                    }
                    else
                    {
                        con.Close();
                        return Json(new { succeed = false, error = "备份数据库失败！" }, JsonRequestBehavior.AllowGet);
                    }
                }
            }
        }

MVC控制器还原数据库：

/// <summary>
        /// 数据库恢复操作
        /// </summary>
        /// <param name="dbName"></param>
        /// <param name="fileUrlUpload"></param>
        /// <returns></returns>
        public ActionResult RecoverDatabase(string dbName, string fileUrlUpload)
        {

            if (dbName == null || dbName.Length == 0)
                return Json(new { msg = false, error = "输入的数据库不存在！" }, JsonRequestBehavior.AllowGet);

            string DateStr  =ConfigurationManager.ConnectionStrings["master"].ConnectionString;

            string DbFilePath = @"F:\DbBackup\tmm\20171122\tmm_ba.bak";//Session["DbFilePath"].ToString();

            SqlConnection con = new SqlConnection(DateStr);
            if (con.State == ConnectionState.Open)
            {
                con.Close();
            }

            SqlConnection conn = new SqlConnection(DateStr);
            conn.Open();

            string strSQL = "select spid from master..sysprocesses where dbid=db_id( '" + dbName + "') ";

            SqlDataAdapter Da = new SqlDataAdapter(strSQL, conn);
            DataTable spidTable = new DataTable();
            Da.Fill(spidTable);

            SqlCommand Cmd = new SqlCommand();
            Cmd.CommandType = CommandType.Text;
            Cmd.Connection = conn;

            for (int iRow = 0; iRow <= spidTable.Rows.Count - 1; iRow++)
            {
                Cmd.CommandText = "kill " + spidTable.Rows[iRow][0].ToString();   //强行关闭用户进程 
                Cmd.ExecuteNonQuery();
            }

            //--------------------------------------------------------------------
            SqlConnection sqlcon = new SqlConnection(DateStr);
            sqlcon.Open();
            string sql = "backup DATABASE " + dbName + " to disk='" + DbFilePath + "' restore database "+dbName+" from disk='" + DbFilePath + "'";
            SqlCommand sqlCmd = new SqlCommand(sql, sqlcon);
            sqlCmd.ExecuteNonQuery();
            sqlCmd.Dispose();
            sqlcon.Close();
            sqlcon.Dispose();
            return Json(new { succeed = false, error = "备份数据库失败！" }, JsonRequestBehavior.AllowGet);
        }

先需要切换到系统数据库下，然后先删除与需还原数据库相关的进程，然后在还原之前得先把数据库日志备份到开始的备份文件中，然后才还原备份文件，要不然会出错的，链接字符串在config文件中
明天再贴效果图，