呵呵,Sorry,忘记拷贝了。delphi 转贴: try DM.ADOConnection1.Connected:=False;//关闭sbhy数据库 DM.adocommand1.Connection:=DM.ADOConnection2;//转移连接到数据库master DM.ADOCommand1.CommandText:='ALTER DATABASE sbhy SET OFFLINE WITH ROLLBACK IMMEDIATE';//切断sbhy连接 DM.ADOCommand1.Execute; DM.ADOCommand1.CommandText:='RESTORE DATABASE sbhy FROM DISK = ''' +opendialog1.FileName +'''';//恢复sbhy数据库 DM.ADOCommand1.Execute; showmessage('完成'); finally DM.ADOCommand1.CommandText:='ALTER DATABASE sbhy SET ONLINE WITH ROLLBACK IMMEDIATE';//重新连接sbhy数据库 DM.ADOCommand1.Execute; DM.ADOConnection2.Connected:=False;//关闭master数据库 end; DM.ADOConnection1.Connected:=True;//打开sbhy数据库 DM.adocommand1.Connection:=DM.ADOConnection1;//恢复连接到数据库sbhy
这样备份行不行 dm.c_backup.commandtext:='backup database oldwater to disk=:filename'var nowdate,bakname:String; begin nowdate:=formatdatetime('yyyy-MM-dd',now); savedialog1.Title:='请输入您要备份的数据文件名称...'; saveDiaLog1.FileName:=nowdate;//一定要加上 savedialog1.Filter:='bak files (*.bak)|*.bak'; if savedialog1.Execute then begin bakname:=savedialog1.FileName+'.bak'; dm.c_backup.Parameters.ParamByName('filename').Value:=bakname; dm.c_backup.Execute; showmessage('您已经成功备份,请妥善保存!'); end; end;
恢复都行,备份有什么难得,只要写好SQL语句就行了
backup database sbhy to disk='C:\kk.bak'
var FADOCommand: TADOCommand; FOpenQuery: TADOQuery; FConnection: TADOConnection; 初始化 FConnection := TADOConnection.Create(nil); FConnection.LoginPrompt := False; FConnection.CommandTimeout := 3600; FConnection.ConnectionTimeout := 60; FADOCommand := TADOCommand.Create(nil); FADOCommand.CommandTimeout := 3600; FADOCommand.CommandType := cmdText; FADOCommand.Connection := FConnection; FOpenQuery := TADOQuery.Create(nil); FOpenQuery.Connection := FConnection; 备份 const BackupStr = 'use master backup database [%s] to DISK=''%s'' with init'; begin Result := GetConnected; if not Result then Exit; with FADOCommand do begin try FADOCommand.CommandText := Format(BackupStr, [DBName(数据库名称), FileName(备份文件名称)]); FADOCommand.Execute; Result := True; except on E: Exception do begin FLastError := '数据库备份错误:' + E.Message; Result := False; end; end; end;恢复 var LogicDBName, LogicLogName: string;//, FSQL const RestoreStr = 'Use master RESTORE database [%0:s] FROM DISK = ''%1:s'' ' + ' with Replace, Move ''%2:s'' to ''%3:s%0:s_data.mdf'',move ''%4:s'' to ' + ' ''%3:s%0:s_log.ldf'''; begin //判断连接数 Result := CheckOtherConnected and GetLogicInfo(LogicDBName, LogicLogName); if not Result then begin Result := False; Exit; end; with FADOCommand do begin FADOCommand.CommandText := Format(RestoreStr, [DBName, FFileName, LogicDBName, GetDBDataFilePath, LogicLogName]); try FADOCommand.Execute; Result := True; except on E: Exception do begin FLastError := '数据恢复错误:' + E.Message; Result := False; end; end; end; 附: function GetLogicInfo(var LogicDBName, LogicLogName: string): Boolean; begin with FOpenQuery do begin try Close; SQL.Clear; SQL.Add(Format('use master RESTORE FILELISTONLY FROM DISK =''%s''', [FFileName])); Open; First; while not Eof do begin if FieldByName('Type').AsString = 'D' then LogicDBName := FieldByName('LogicalName').AsString; if FieldByName('Type').AsString = 'L' then LogicLogName := FieldByName('LogicalName').AsString; Next; end; Result := True; except on E: EOleException do begin FLastError := Format('数据恢复错误:找不到备份文件"%s"。' + #10#13'请确认文件是否存在。', [FFileName]); Result := False; end; end; end; end;function GetDBDataFilePath: string; begin with FOpenQuery do begin try Close; SQL.Clear; SQL.Text := 'select filename from master..sysdatabases where name = ''' + FConnectInfo.DB + ''''; Open; Result := Fields[0].AsString; if Result <> EmptyStr then begin if Length(ExtractFileDir(Result)) <> 3 then Result := ExtractFileDir(Result) + '\' else Result := ExtractFileDir(Result) end except on E: Exception do FLastError := '得到系统路径错误:' + E.Message; end; end; end;
转贴:
try
DM.ADOConnection1.Connected:=False;//关闭sbhy数据库
DM.adocommand1.Connection:=DM.ADOConnection2;//转移连接到数据库master
DM.ADOCommand1.CommandText:='ALTER DATABASE sbhy SET OFFLINE WITH ROLLBACK IMMEDIATE';//切断sbhy连接
DM.ADOCommand1.Execute; DM.ADOCommand1.CommandText:='RESTORE DATABASE sbhy FROM DISK = ''' +opendialog1.FileName +'''';//恢复sbhy数据库
DM.ADOCommand1.Execute;
showmessage('完成');
finally
DM.ADOCommand1.CommandText:='ALTER DATABASE sbhy SET ONLINE WITH ROLLBACK IMMEDIATE';//重新连接sbhy数据库
DM.ADOCommand1.Execute;
DM.ADOConnection2.Connected:=False;//关闭master数据库
end;
DM.ADOConnection1.Connected:=True;//打开sbhy数据库
DM.adocommand1.Connection:=DM.ADOConnection1;//恢复连接到数据库sbhy
dm.c_backup.commandtext:='backup database oldwater to disk=:filename'var
nowdate,bakname:String;
begin
nowdate:=formatdatetime('yyyy-MM-dd',now);
savedialog1.Title:='请输入您要备份的数据文件名称...';
saveDiaLog1.FileName:=nowdate;//一定要加上
savedialog1.Filter:='bak files (*.bak)|*.bak';
if savedialog1.Execute then begin
bakname:=savedialog1.FileName+'.bak';
dm.c_backup.Parameters.ParamByName('filename').Value:=bakname;
dm.c_backup.Execute;
showmessage('您已经成功备份,请妥善保存!');
end;
end;
FADOCommand: TADOCommand;
FOpenQuery: TADOQuery;
FConnection: TADOConnection;
初始化
FConnection := TADOConnection.Create(nil);
FConnection.LoginPrompt := False;
FConnection.CommandTimeout := 3600;
FConnection.ConnectionTimeout := 60; FADOCommand := TADOCommand.Create(nil);
FADOCommand.CommandTimeout := 3600;
FADOCommand.CommandType := cmdText;
FADOCommand.Connection := FConnection; FOpenQuery := TADOQuery.Create(nil);
FOpenQuery.Connection := FConnection;
备份
const
BackupStr = 'use master backup database [%s] to DISK=''%s'' with init';
begin
Result := GetConnected;
if not Result then Exit;
with FADOCommand do
begin
try
FADOCommand.CommandText := Format(BackupStr, [DBName(数据库名称), FileName(备份文件名称)]);
FADOCommand.Execute;
Result := True;
except
on E: Exception do
begin
FLastError := '数据库备份错误:' + E.Message;
Result := False;
end;
end;
end;恢复
var
LogicDBName, LogicLogName: string;//, FSQL
const
RestoreStr = 'Use master RESTORE database [%0:s] FROM DISK = ''%1:s'' '
+ ' with Replace, Move ''%2:s'' to ''%3:s%0:s_data.mdf'',move ''%4:s'' to '
+ ' ''%3:s%0:s_log.ldf''';
begin
//判断连接数
Result := CheckOtherConnected and GetLogicInfo(LogicDBName, LogicLogName);
if not Result then
begin
Result := False;
Exit;
end;
with FADOCommand do
begin
FADOCommand.CommandText := Format(RestoreStr, [DBName, FFileName,
LogicDBName, GetDBDataFilePath, LogicLogName]);
try
FADOCommand.Execute;
Result := True;
except
on E: Exception do
begin
FLastError := '数据恢复错误:' + E.Message;
Result := False;
end;
end;
end;
附:
function GetLogicInfo(var LogicDBName,
LogicLogName: string): Boolean;
begin
with FOpenQuery do
begin
try
Close;
SQL.Clear;
SQL.Add(Format('use master RESTORE FILELISTONLY FROM DISK =''%s''', [FFileName]));
Open;
First;
while not Eof do
begin
if FieldByName('Type').AsString = 'D' then
LogicDBName := FieldByName('LogicalName').AsString;
if FieldByName('Type').AsString = 'L' then
LogicLogName := FieldByName('LogicalName').AsString;
Next;
end;
Result := True;
except
on E: EOleException do
begin
FLastError := Format('数据恢复错误:找不到备份文件"%s"。'
+ #10#13'请确认文件是否存在。', [FFileName]);
Result := False;
end;
end;
end;
end;function GetDBDataFilePath: string;
begin
with FOpenQuery do
begin
try
Close;
SQL.Clear;
SQL.Text := 'select filename from master..sysdatabases where name = ''' + FConnectInfo.DB + '''';
Open;
Result := Fields[0].AsString;
if Result <> EmptyStr then
begin
if Length(ExtractFileDir(Result)) <> 3 then
Result := ExtractFileDir(Result) + '\'
else
Result := ExtractFileDir(Result)
end
except
on E: Exception do
FLastError := '得到系统路径错误:' + E.Message;
end;
end;
end;