:vc中怎么使用exp/imp命令备份/恢复oracle数据库

 
 // 以太工作室 东东 

 BOOL Ping(LPCTSTR szTarget, DWORD &dwTime) 
 { 
 	BOOL bSuccess = FALSE; 
 	dwTime = INFINITE; 

 	if(szTarget == NULL) 
 	{ 
 		TRACE0("Target Is NULL\n"); 
 		return FALSE; 
 	} 

 	TCHAR szCmdLine[80]; 
 	if(_sntprintf(szCmdLine, sizeof(szCmdLine) / sizeof(TCHAR), 
 		_T("ping.exe -n 1 %s"), szTarget) == sizeof(szCmdLine) / sizeof(TCHAR)) 
 	{ 
 		TRACE0("Target Is Too Long\n"); 
 		return FALSE; 
 	} 

   HANDLE hWritePipe = NULL; 
 	HANDLE hReadPipe = NULL; 
 	HANDLE hWriteShell = NULL; 
 	HANDLE hReadShell = NULL; 

 	SECURITY_ATTRIBUTES  sa; 
 	memset(&sa, 0, sizeof(sa)); 
 	sa.nLength = sizeof(sa); 
 	sa.bInheritHandle = TRUE; 
 	sa.lpSecurityDescriptor = NULL; 

 	if(CreatePipe(&hReadPipe, &hReadShell, &sa, 0) 
 		&& CreatePipe(&hWriteShell, &hWritePipe, &sa, 0)) 
 	{ 
 		STARTUPINFO			si; 
 		memset(&si, 0, sizeof(si)); 
 		si.cb       = sizeof(si); 
 		si.dwFlags    = STARTF_USESHOWWINDOW | STARTF_USESTDHANDLES; 
 		si.hStdInput  = hWriteShell; 
 		si.hStdOutput   = hReadShell; 
 		si.hStdError  = hReadShell; 
 		si.wShowWindow  = SW_HIDE; 

 		PROCESS_INFORMATION	pi; 
 		memset(&pi, 0, sizeof(pi)); 

 		int nMin = -1, nMax = -1, nAvg = -1; 
 		if(CreateProcess(NULL, szCmdLine, NULL, NULL, TRUE, 0, NULL, NULL, &si, &pi)) 
 		{ 
 			if(WaitForSingleObject(pi.hProcess, 10000) == WAIT_OBJECT_0) 
 			{ 
 				TCHAR szBuffer[1024]; 
 				DWORD dwBytes; 
 				if(ReadFile(hReadPipe, szBuffer, sizeof(szBuffer), &dwBytes, NULL)) 
 				{ 
 					szBuffer[dwBytes] = '\0'; 

 					LPTSTR lpszTime = NULL; 
 					lpszTime = _tcsstr(szBuffer, _T("Request timed out")); 
 					if(lpszTime == NULL) 
 					{ 
 						lpszTime = _tcsstr(szBuffer, _T("Minimum")); 
 						if(lpszTime != NULL) 
 						{ 
 							if(_stscanf(lpszTime, _T("Minimum = %dms, Maximum = %dms, Average = %dms"), 
 								&nMin, &nMax, &nAvg) == 3) 
 							{ 
 								TRACE3("%d, %d, %d\n", nMin, nMax, nAvg); 

 								dwTime = nAvg; 
 								bSuccess = TRUE; 
 							} 
 						} 
 						else 
 						{ 
 							TRACE0("PING FORMAT is Error\n"); 
 						} 
 					} 
 					else 
 					{ 
 						TRACE0("PING is Time Out\n"); 

 						bSuccess = TRUE; 
 					} 

 				} 
 			} 
 			else 
 			{ 
 				TRACE1("Process(%d) is Time Out\n", pi.dwProcessId); 
 				TerminateProcess(pi.hProcess, 0); 
 			} 

 			CloseHandle(pi.hThread); 
 			CloseHandle(pi.hProcess); 

 			TRACE3(_T("Minimum = %dms, Maximum = %dms, Average = %dms\n"), nMin, nMax, nAvg); 
 		} 
 	} 

   if(hWritePipe != NULL) 
 		CloseHandle(hWritePipe); 
   if(hReadPipe != NULL) 
 		CloseHandle(hReadPipe); 
   if(hWriteShell != NULL) 
 		CloseHandle(hWriteShell); 
   if(hReadShell != NULL) 
 		CloseHandle(hReadShell); 

 	return bSuccess; 
 }