数据库备份和恢复.doc

下面是相关技术难点的代码实现（因为个人的喜好，在此已C#的代码形式实现）： 1 在用户的配置时，我们需要列出当前局域网内所有的数据库服务器，并且要列出指定服务器的所有数据库，实现代码如下： 取得数据库服务器列表： public ArrayList GetServerList() ArrayList alServers = new ArrayList() ; SQLDMO.Application sqlApp = new SQLDMO.ApplicationClass() ; try SQLDMO.NameList serverList = sqlApp.ListAvailableSQLServers() ; for(int i = 1;i= serverList.Count;i+) alServers.Add(serverList.Item(i) ; catch(Exception e) throw(new Exception(取数据库服务器列表出错：+e.Message) ; finally sqlApp.Quit() ; return alServers ; 取得指定数据库服务器的数据库列表 public ArrayList GetDbList(string strServerName,string strUserName,string strPwd) ServerName = strServerName ; UserName = strUserName ; Password = strPwd ; ArrayList alDbs = new ArrayList() ; SQLDMO.Application sqlApp = new SQLDMO.ApplicationClass() ; SQLDMO.SQLServer svr = new SQLDMO.SQLServerClass() ; try svr.Connect(ServerName,UserName,Password) ; foreach(SQLDMO.Database db in svr.Databases) if(db.Name!=null) alDbs.Add(db.Name) ; catch(Exception e) throw(new Exception(连接数据库出错：+e.Message) ; finally svr.DisConnect() ; sqlApp.Quit() ; return alDbs ; 2 数据库的备份和实时进度显示代码： public bool BackUPDB(string strDbName,string strFileName, ProgressBar pgbMain) PBar = pgbMain ; SQLDMO.SQLServer svr = new SQLDMO.SQLServerClass() ; try svr.Connect(ServerName,UserName,Password) ; SQLDMO.Backup bak = new SQLDMO.BackupClass(); bak.Action = 0 ; bak.Initialize = true ; SQLDMO.BackupSink_PercentCompleteEventHandler pceh = new SQLDMO.BackupSink_PercentCompleteEventHandler(Step); bak.PercentComplete += pceh; bak.Files = strFileName; bak.Database = strDbName; bak.SQLBackup(svr); return true ; catch(Exception err) throw(new Exception(备份数据库失败+err.Message) ; finally svr.DisConnect() ; private void Step(string message,int percent) PBar.Value = percent ; 其中，这两个语句实现了进度的实时显示： SQLDMO.BackupSink_PercentCompleteEventHandler pceh = new SQLDMO.BackupSink_PercentCompleteEventHandler(Step); bak.PercentComplete += pceh; Step就是上面private void Step(string message,int percent) 的方法名称，它用来显示进度条的当前进度。 3 数据库的恢复和杀死进程的代码： public bool RestoreDB(string strDbName,string strFileName, ProgressBar pgbMain) PBar = pgbMain ; SQLDMO.SQLServer svr = new SQLDMO.SQLServerClass() ; try svr.Connect(ServerName,UserName,Password) ; SQLDMO.QueryResults qr = svr.EnumProcesses(-1) ; int iColPIDNum = -1 ; int iColDbName = -1 ; for(int i=1;i=qr.Columns;i+) string strName = qr.get_ColumnName(i) ; if (strName.ToUpper().Trim() = SPID) iColPIDNum = i ; else if (strName.ToUpper().Trim() = DBNAME) iColDbName = i ; if (iColPIDNum != -1 & iColDbName != -1) break ; for(int i=1;i=qr.Rows;i+) int lPID = qr.GetColumnLong(i,iColPIDNum) ; string strDBName = qr.GetColumnString(i,iColDbName) ; if (strDBName.ToUpper() = strDbName.ToUpper() svr.KillProcess(lPID) ; SQLDMO.Restore res = new SQLDMO.RestoreClass() ; res.Action = 0 ; SQLDMO.RestoreSink_PercentCompleteEventHandler pceh = new SQLDMO.RestoreSink_PercentCompleteEventHandler(Step); res.PercentComplete += pceh; res.Files = strFileName ; res.Database = strDbName ; res.ReplaceDatabase = true ; res.SQLRestore(svr) ; return true ; catch(Exception err) throw(new Exception(恢复数据库失败,请关闭所有和该数据库连接的程序！+err.Message) ; finally svr.DisConnect() ; 其中这个语句取得了所有的进程列表： SQLDMO.QueryResults qr = svr.EnumProcesses(-1) ; 下面的语句找到和要恢复数据库相关的进程并杀死： int iColPIDNum = -1 ; int iColDbName = -1 ; for(int i=1;i=qr.Columns;i+) string strName = qr.get_ColumnName(i) ; if (strName.ToUpper().Trim() = SPID) iColPIDNum = i ; else if (strName.ToUpper().Trim() = DBNAME) iColDbName = i ; if (iColPIDNum != -1 & iColDbName != -1) break ; for(int i