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实例应用1： //备份procedure TF_DataBaseBackUp.Btn_bfClick(Sender: TObject); var i:integer; begin if SaveDialog1.Execute then begin ADOConnection1.Connected:=False; ADOConnection1.ConnectionString:=StringReplace(GetConnectionString,‘Taxi‘,‘master‘,[rfReplaceAll]); ADOConnection1.Connected:=True; ADOQuery1.SQL.Text :=‘backup database Taxi to disk=‘+QuotedStr(SaveDialog1.FileName); try Btn_bf.Caption :=‘ 正在备份…‘; self.repaint; ADOQuery1.execsql; for i:=1 to 100 do begin Btn_bf.Caption :=‘ 备份中…‘+inttostr(i)+‘%‘; self.repaint; sleep(50); end; ShowMessage(‘数据备份操作已经成功完成!‘); except ShowMessage(‘数据备份时出错!请重试。‘); end; Btn_bf.caption:=‘ 开始备份‘; self.repaint; end; end; //恢复 procedure TF_DataBaseBackUp.Btn_hfClick(Sender: TObject); var i:integer; begin if Application.MessageBox(‘该操作会把当前程序数据改为备份时的状态，您确定要这么做吗？‘,‘提示‘,mb_okcancel+MB_ICONQUESTION )<>idok then exit; if OpenDialog1.Execute then begin try ADOConnection1.Connected:=False; ADOConnection1.ConnectionString:=StringReplace(GetConnectionString,‘Taxi‘,‘master‘,[rfReplaceAll]); ADOConnection1.Connected:=True; Btn_hf.Caption :=‘ 清除数据库连接...‘; self.Repaint; ClearDBConnections(); Btn_hf.Caption :=‘ 正在恢复...‘; self.repaint; ADOQuery1.SQL.Text :=‘restore database Taxi from disk=‘+QuotedStr(OpenDialog1.FileName); ADOQuery1.execsql; for i:=1 to 100 do begin Btn_hf.Caption :=‘ 恢复中…‘+inttostr(i)+‘%‘; self.repaint; sleep(50); end; Btn_hf.caption:=‘ 开始恢复‘; self.repaint; except Application.MessageBox(‘数据恢复时出错!请重试。‘,‘提示‘,64); Btn_hf.caption:=‘ 开始恢复‘; self.repaint; exit; end; application.MessageBox(‘数据库已成功恢复!请重新启动系统!‘,‘提示:‘,mb_ok+mb_iconinformation); end; end; //------------------------------------------------------------------------------ //函数名称: ClearDBConnections //函数功能: 清除数据库连接 //------------------------------------------------------------------------------ procedure TF_DataBaseBackUp.ClearDBConnections; var vspid:string; begin //覆盖数据库,清除数据库现有连接 ADOQuery1.Close; ADOQuery1.SQL.Text:=‘select spid from sysprocesses where dbid=db_id(‘‘Taxi‘‘)‘; ADOQuery1.Open; while not ADOQuery1.Eof do begin vspid:=ADOQuery1.FieldByName(‘spid‘).AsString; ADOQuery2.Close; ADOQuery2.SQL.Text:=‘kill ‘+vspid; ADOQuery2.ExecSQL; ADOQuery1.Next; end; end; 实例应用2： procedure TF_BF.BitBtn1Click(Sender: TObject); var inif:Tinifile; T:string; begin inif:=Tinifile.Create(ExtractFilePath(Paramstr(0))+‘data/SysSet.ini‘); T:=inif.ReadString(‘Data‘,‘DbType‘,‘‘); IF LENGTH(TRIM(EDIT2.Text))=0 THEN BEGIN APPLICATION.MessageBox(‘请指定数据备份的文件名！‘,‘林康软件‘,MB_OK+MB_ICONWARNING); END ELSE BEGIN if T=‘SQLserver‘ then begin ADOQUERY1.Close; ADOQUERY1.SQL.Clear; ADOQUERY1.SQL.Add(‘USE MASTER‘); ADOQUERY1.SQL.ADD(‘BACKUP DATABASE GZGL to disk=‘+#39+SAVEDIALOG1.FileName+#39+‘ with init‘); TRY ADOQUERY1.ExecSQL; APPLICATION.MessageBox(‘数据备份操作成功！‘,‘林康软件‘,MB_OK+MB_ICONWARNING); EXCEPT APPLICATION.MessageBox(‘数据备份操作失败！‘,‘林康软件‘,MB_OK+MB_ICONWARNING); END; close; TRY F_main.ADOConnection1.Close; F_main.ADOConnection1.Open; EXCEPT APPLICATION.MessageBox(‘该系统需要重新启动, 请退出！‘,‘林康软件‘,MB_OK+MB_ICONWARNING); application.Terminate; END; end; if T=‘Access‘ then begin F_MAIN.ADOConnection1.Close; TRY COPYFILE(PCHAR(ExtractFilePath(Paramstr(0))+‘DATA/gzgl.mdb‘),PCHAR(EDIT2.Text),FALSE); APPLICATION.MessageBox(‘数据备份操作成功！‘,‘林康软件‘,MB_OK+MB_ICONWARNING); EXCEPT APPLICATION.MessageBox(‘数据备份操作失败！‘,‘林康软件‘,MB_OK+MB_ICONWARNING); END; F_MAIN.ADOConnection1.Open; end; END; end; 恢复: procedure TF_HF.BitBtn1Click(Sender: TObject); var t:string; inif:Tinifile; begin inif:=Tinifile.Create(ExtractFilePath(Paramstr(0))+‘data/SysSet.ini‘); T:=inif.ReadString(‘Data‘,‘DbType‘,‘‘); IF LENGTH(TRIM(EDIT2.Text))=0 THEN BEGIN APPLICATION.MessageBox(‘请指定数据恢复的文件名！‘,‘林康软件‘,MB_OK+MB_ICONWARNING); END ELSE BEGIN if T=‘SQLserver‘ then begin if MESSAGEDLG(‘数据恢复操作将覆盖现有的数据,需要继续吗？‘,mtconfirmation,[MBYES,MBNO],1) <>Mryes THEN exit; ADOQUERY1.Close; ADOQUERY1.SQL.Clear; ADOQUERY1.SQL.ADD(‘use master declare @spid int‘); ADOQUERY1.SQL.ADD(‘declare getspid cursor for‘); ADOQUERY1.SQL.ADD(‘select spid from sysprocesses where dbid=db_id(‘+#39+‘GZGL‘+#39+‘)‘); ADOQUERY1.SQL.ADD(‘open getspid‘); ADOQUERY1.SQL.ADD(‘fetch next from getspid into @spid‘); ADOQUERY1.SQL.ADD(‘while @@fetch_status < >-1‘); ADOQUERY1.SQL.ADD(‘begin‘); ADOQUERY1.SQL.ADD(‘exec(‘+#39+‘kill ‘+#39+‘+@spid)‘); ADOQUERY1.SQL.ADD(‘fetch next from getspid into @spid‘); ADOQUERY1.SQL.ADD(‘end‘); ADOQUERY1.SQL.ADD(‘close getspid‘); ADOQUERY1.SQL.ADD(‘deallocate getspid‘); ADOQUERY1.SQL.ADD(‘RESTORE DATABASE GZGL FROM disk=‘+#39+OPENDIALOG1.FileName+#39+‘ WITH REPLACE‘); TRY ADOQUERY1.ExecSQL; APPLICATION.MessageBox(‘数据恢复操作成功！‘,‘林康软件‘,MB_OK+MB_ICONWARNING); EXCEPT APPLICATION.MessageBox(‘数据恢复操作失败！‘,‘林康软件‘,MB_OK+MB_ICONWARNING); END; close; TRY F_main.ADOConnection1.Close; F_main.ADOConnection1.Open; EXCEPT APPLICATION.MessageBox(‘该系统需要重新启动, 请退出！‘,‘林康软件‘,MB_OK+MB_ICONWARNING); application.Terminate; END; end; if T=‘Access‘ then begin F_MAIN.ADOConnection1.Close; TRY COPYFILE(PCHAR(EDIT2.Text),PCHAR(ExtractFilePath(Paramstr(0))+‘DATA/Gzgl.mdb‘),FALSE); APPLICATION.MessageBox(‘数据恢复操作成功！‘,‘林康软件‘,MB_OK+MB_ICONWARNING); EXCEPT APPLICATION.MessageBox(‘数据恢复操作失败！‘,‘林康软件‘,MB_OK+MB_ICONWARNING); END; F_MAIN.ADOConnection1.Open; end; END; end; 实例应用3： 最简单的sql语句：备份与还原sql server自带的数据库 在服务器上备份： use northwind backup database northwind to disk=d:/northwind_bak.dat with init restore database northnwind from disk = d:/northwind_bak.dat ------------------------------------------------------------------ 备份数据库这一操作在客户机上实现 客户机：machine 共享目录：share backup: bakcup database dbname to disk=//machine/share/data.bak with init //machine/share目录要有写权限。 restore: restore database dbname from disk=//machine/share/data.bak // 备注：restore 语句有很多的选项，可以查看企业管理器的在线帮助。如下 with replace, move dbname_dat to c:/mssql7/data/dbname.mdf, move dbname_log to c:/mssql7/data/dbname.log 其中c:/mssql7/data/是服务器的目录，这点要注意
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原文地址：http://www.cnblogs.com/chenmfly/p/4780658.html
