标题 | 调用sql语句实现SqlServer的备份和还原 |
范文 | 调用sql语句实现SqlServer的备份还原,包括完整备份和差异备份,因为执行备份还原需要一定的时间,因此需要设定 CommandTimeout参数。 /// <summary> /// 备份数据库 调用SQL语句 /// </summary> /// <param name="strFileName">备份文件名</param> /// <param name="BackUpType">0表示完整备份,为1表示差异备份</param> /// <returns></returns> public bool BackUPDB(string strFileName, int BackUpType) { //如果是差异备份,就是看一下文件是否存在,如果不存在,就不执行 if (BackUpType == 1 && File.Exists(strFileName) == false) { return false; } bool result = false; try { string[] strConnSqlArr = strConnSql.Split(';'); string DBName = strConnSqlArr[4].ToString()。Split('=')[1].ToString();//数据库名称 string backUp_full = string.Format("backup database {0} to disk = '{1}' ;", DBName, strFileName); string backUp_Diff = string.Format("backup database {0} to disk='{1}' WITH DIFFERENTIAL ;", DBName, strFileName); WKK.DBUtility.DbHelperSQL.ExecuteSql(BackUpType == 0 ? backUp_full : backUp_Diff, 600); result = true; } catch (Exception ex) { Common.Log.WriteLog(string.Format("备份{0}数据库失败", BackUpType == 0 ? "完整" : "差异"), ex); // System.Diagnostics.Debug.WriteLine(string.Format("备份{0}数据库失败", BackUpType == 0 ? "完整" : "差异")); result = false; } finally { if (result == true) { string str_InfoContent = string.Format("备份{0}数据库成功", BackUpType == 0 ? "完整" : "差异"); // System.Diagnostics.Debug.WriteLine(str_InfoContent); } } return result; } /// <summary> /// 还原数据库 使用Sql语句 /// </summary> /// <param name="strDbName">数据库名</param> /// <param name="strFileName">备份文件名</param> public bool RestoreDB(string strDbName, string strFileName) { bool result = false; try { string strConnSql = ConfigurationSettings.AppSettings["ConnectionString"].ToString(); string[] strConnSqlArr = strConnSql.Split(';'); string DBName = strConnSqlArr[4].ToString()。Split('=')[1].ToString();//数据库名称 #region 关闭所有访问数据库的进程,否则会导致数据库还原失败 闫二永 17:39 2014/3/19 string cmdText = String.Format("EXEC sp_KillThread @dbname='{0}'", DBName); WKK.DBUtility.DbHelperSQL.connectionString = strConnSql.Replace(DBName, "master"); WKK.DBUtility.DbHelperSQL.ExecuteSql(cmdText); #endregion string Restore = string.Format("RESTORE DATABASE {0} FROM DISK='{1}'WITH replace", DBName, strFileName); WKK.DBUtility.DbHelperSQL.ExecuteSql(Restore, 600); result = true; } catch (Exception ex) { MessageBox.Show("还原数据库失败rn" + ex.Message, "系统提示!", MessageBoxButtons.OK, MessageBoxIcon.Warning); Common.Log.WriteLog(string.Format("还原数据库失败--{0}", DateTime.Now.ToString()), ex); result = false; } finally { //恢复成功后需要重启程序 if (result) { // } } return result; } /// <summary> /// 执行一条SQL语句 /// </summary> /// <param name="SQLStringList">sql语句</param> /// <param name="SetTimeout"> 等待连接打开的时间(以秒为单位)。 默认值为 15 秒。 </param> /// <returns></returns> public static int ExecuteSql(string SQLString, int setTimeOut) { using (SqlConnection connection = new SqlConnection(connectionString)) { using (SqlCommand cmd = new SqlCommand(SQLString, connection)) { try { connection.Open(); cmd.CommandTimeout = setTimeOut; int rows = cmd.ExecuteNonQuery(); connection.Close(); return rows; } catch (System.Data.SqlClient.SqlException e) { connection.Close(); throw e; } } } } |
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