Question

我已经在技术支持团队中担任新角色，并负责解决我们的夜间数据提取失败的持续和间歇性问题。

提取过程每晚发送一个数据文件，其中包含当天完成的交易记录。计划任务每晚运行，如果第一次失败则运行第二次，然后根据状态发送电子邮件通知。

计划任务打开一个CMD文件，然后运行JS脚本命令以在SQL数据库上执行自定义存储过程。每天晚上，文件将替换为新文件，此逻辑将状态写入文件。

以下是输出日志信息，表示无效的呼叫错误：

Custom_Extract_Second_Run.js于2016年1月19日星期二晚上8:15:00开始 C：\ DataExtract \ Custom_Extract_Second_Run.js（341,4）Microsoft JScript运行时错误：无效的过程调用或参数

Custom_Extract.js于2016年1月20日星期三下午8:03:00开始脚本导致异常。例外号码：0x5007 说明：＆＃39; objRs.EOF＆＃39;是null还是不是对象任务于2016年1月20日星期三晚上8:08:13结束。发送的总消息数：0

Custom_Extract_Second_Run.js于2016年1月20日星期三晚上8:15:00开始任务于2016年1月20日星期三下午8:20:00结束。发送的总消息数：1

Custom_Extract.js于2016年1月21日星期四下午8:03:01开始脚本导致异常。例外号码：0x5007 说明：＆＃39; objRs.EOF＆＃39;是null还是不是对象任务于2016年1月21日星期四下午8:07:56结束。发送的总消息数：0

Custom_Extract_Second_Run.js于2016年1月21日星期四晚上8:15:00开始脚本导致异常。例外号码：0x3704 描述：关闭对象时不允许操作。任务于2016年1月21日星期四晚上8:19:49结束。发送的总消息数：0

Custom_Extract.js于2016年1月22日星期五晚上8:03:00开始 C：\ DataExtract \ Custom_Extract.js（318,4）Microsoft JScript运行时错误：无效的过程调用或参数

Custom_Extract_Second_Run.js于2016年1月22日星期五晚上8:15:00开始 C：\ DataExtract \ Custom_Extract_Second_Run.js（341,4）Microsoft JScript运行时错误：无效的过程调用或参数

我们不得不对用于计算其实际行为方式的脚本进行反向工程，但不能在自信的水平上进行更改。提取逻辑是很久以前开发的（10到12年前），因此可能是非常陈旧和过时的逻辑。

以下是摘录中使用的javascript逻辑。

＆＃13;

var QUERY_NAME_1 = "Custom_Extract";
var QUERY_NAME_2 = "Custom_Extract_UpdateDate";
var LOG_FILE_NAME = "DataExtract_error.log";
var EXTRACT_FILE_NAME = "Extract";

var DB_SERVER_NAME = "sql6";
var DB_DATABASE_NAME = "database_name";
var DB_DATABASE_USER_NAME = "username";
var DB_DATABASE_PASSWORD = "password";

var DateTimeNow = new Date();
var DATE_VALUE = DateTimeNow.getDate() + "/" + (DateTimeNow.getMonth() + 1) + "/" + DateTimeNow.getFullYear();
var EMAIL_SUBJECT_HEADER = "Email Extract Header - Extract Date - " + DATE_VALUE;
var EMAIL_SUBJECT = EMAIL_SUBJECT_HEADER + " Successful";
var EMAIL_SUBJECT_ERROR = "Unsuccessful - " + EMAIL_SUBJECT_HEADER;

var EmailCount = 0;
var DELIMITER = "|";
var STRING_SQL_FAILED = "SQL Failed";
var strScript = "";
var strMsg = "";

var ARG_REPORT_PATH = "";
var ARG_MAIL_SERVER = "";
var ARG_KEEP_BACKUP_COPIES = 0;
var ARG_EMAIL_FROM = "";
var ARG_EMAIL_TO = "";

function ParseCommandLineParams() {
  var cmdArgs = WScript.Arguments;
  for (i = 0; i < cmdArgs.length; i++) {
    // Get next argument
    arg = cmdArgs(i);

    // Each argument is in the form a=b. Split the two components
    j = arg.search(/=/);
    if (j == -1) {
      WScript.Echo("Invalid arguments arg = " + arg);
      return false;
    }

    argName = arg.substring(0, j);
    argValue = arg.substring(j + 1, arg.length);
    switch (argName) {
      case "/reportPath":
        ARG_REPORT_PATH = argValue;
        break;
      case "/mailServer":
        ARG_MAIL_SERVER = argValue;
        break;
      case "/keepBackupCopies":
        ARG_KEEP_BACKUP_COPIES = parseInt(argValue);
        break;
      case "/from":
        ARG_EMAIL_FROM = argValue;
        break;
      case "/to":
        ARG_EMAIL_TO = argValue;
        break;
      default:
        WScript.Echo("Invalid arguments. Name = '" + argName + "' Value = '" + argValue + "'");
        return false;
    }
  }
  return true;
}


function DisplayUsage() {
  WScript.Echo("Usage: cscript DataExtract.js");
  WScript.Echo("      [/m=<Report path directory where it creates file>]");
  WScript.Echo("      [/from=<from-line in email>] [/to=<to-line in email>]");
  WScript.Echo("      [/machinename=<Email Server name>] [/databaseConfig=<Database Config Setting file>]");
  WScript.Echo(" ");
  WScript.Echo("   /m              - unc path to mail directory      (default: ..\\reports\\)");
  WScript.Echo("   /from           - from-line in email              (default: Tejas Magia <>");
  WScript.Echo("   /to             - to-line in email                (default: Tejas Magia <>");
  WScript.Echo("   /machinename    - email server name               (default: EXCHANGE2 ");
  WScript.Echo("   /databaseConfig - DataBase Setup Config           (default: ..\\..\\..\\..\\config\\config.txt ");

  return;
}

function DisplayParameters() {
  WScript.Echo("Parameters:");
  WScript.Echo("      ARG_REPORT_PATH=[" + ARG_REPORT_PATH + "]");
  WScript.Echo("      ARG_EMAIL_FROM=[" + ARG_EMAIL_FROM + "]");
  WScript.Echo("      ARG_EMAIL_TO=[" + ARG_EMAIL_TO + "]");
  WScript.Echo("      ARG_MAIL_SERVER=[" + ARG_MAIL_SERVER + "]");
  WScript.Echo("      DB_SERVER_NAME=[" + DB_SERVER_NAME + "]");
  WScript.Echo("      DB_DATABASE_NAME=[" + DB_DATABASE_NAME + "]");

  return;
}

function GetConfigCDO() {
  var objConf = WScript.CreateObject("CDO.Configuration");
  objFields = objConf.Fields;
  objFields.Item("http://schemas.Microsoft.com/cdo/configuration/sendusing") = 2;
  objFields.Item("http://schemas.microsoft.com/cdo/configuration/smtpserver") = ARG_MAIL_SERVER;
  objFields.Item("http://schemas.Microsoft.com/cdo/configuration/smtpserverport") = 25;
  objFields.Item("http://schemas.microsoft.com/cdo/configuration/smtpconnectiontimeout") = 30;
  objFields.Update();

  return objConf;
}

function GetDatabaseConnection() {
  // SQLOLEDB is very sensitive to noise between client & server, and always mistaken certain
  // noise as returned result set; ODBC is better way to go for now
  var objCon = WScript.CreateObject("ADODB.Connection");
  objCon.Open(
    "Driver={Sql Server};APP=" + strScript +
    ";Server=" + DB_SERVER_NAME +
    ";Database=" + DB_DATABASE_NAME +
    ";user id=" + DB_DATABASE_USER_NAME +
    ";password=" + DB_DATABASE_PASSWORD +
    ";OLE DB Services=0"
  );

  return objCon;
}



//
// BEGIN MAIN PROGRAM
//

strMsg = "**************************************************";
WScript.Echo(strMsg);
WScript.StdErr.WriteLine(strMsg);

strScript = String(WScript.ScriptName);
DateTimeNow = new Date();
strMsg = strScript + " started at " + DateTimeNow.toLocaleString();
WScript.Echo(strMsg);
WScript.StdErr.WriteLine(strMsg);

if (!ParseCommandLineParams()) {
  DisplayUsage();
  WScript.Quit(0);
}

DisplayParameters();

try {
  var objCon = GetDatabaseConnection();
  var objCmd = WScript.CreateObject("ADODB.Command");
  objCmd.ActiveConnection = objCon;
  objCmd.CommandText = QUERY_NAME_1;
  objCmd.CommandType = 4; // adCmdStoredProc
  objCmd.CommandTimeout = 1800;
  var objParam = objCmd.CreateParameter("Return", 3, 4); // adInteger, adParamReturnValue
  objCmd.Parameters.Append(objParam);

  WScript.Echo("Before execution");
  if (ARG_KEEP_BACKUP_COPIES == 1) {
    var objFSO = WScript.CreateObject("Scripting.FileSystemObject");
    if (objFSO.FileExists(ARG_REPORT_PATH + EXTRACT_FILE_NAME + "3.txt")) {
      var File3 = objFSO.GetFile(ARG_REPORT_PATH + EXTRACT_FILE_NAME + "3.txt");
      File3.Delete();
    }
    if (objFSO.FileExists(ARG_REPORT_PATH + EXTRACT_FILE_NAME + "2.txt")) {
      var File2 = objFSO.GetFile(ARG_REPORT_PATH + EXTRACT_FILE_NAME + "2.txt");
      File2.Move(ARG_REPORT_PATH + EXTRACT_FILE_NAME + "3.txt");
    }
    if (objFSO.FileExists(ARG_REPORT_PATH + EXTRACT_FILE_NAME + "1.txt")) {
      var File1 = objFSO.GetFile(ARG_REPORT_PATH + EXTRACT_FILE_NAME + "1.txt");
      File1.Move(ARG_REPORT_PATH + EXTRACT_FILE_NAME + "2.txt");
    }
    if (objFSO.FileExists(ARG_REPORT_PATH + EXTRACT_FILE_NAME + ".txt")) {
      var File0 = objFSO.GetFile(ARG_REPORT_PATH + EXTRACT_FILE_NAME + ".txt");
      File0.Move(ARG_REPORT_PATH + EXTRACT_FILE_NAME + "1.txt");
    }
  }

  var objRs = null;
  try {
    objRs = objCmd.Execute();
  } catch (er) {
    try {
      objRs = objCmd.Execute();
    } catch (er2) {
      try {
        objRs.Close();
      } catch (er3) {
        WScript.Echo("Error found even after 2nd run attempt!");
      }

      var strError = "First run failed";

      // Send error email	    
      var objConf = GetConfigCDO();
      var objMsg = WScript.CreateObject("CDO.Message");
      objMsg.Configuration = objConf;
      // objMsg.To = ARG_EMAIL_TO;
      objMsg.To = "support@sumtotal.com.au";
      objMsg.From = ARG_EMAIL_FROM;
      objMsg.Subject = EMAIL_SUBJECT_ERROR;
      objMsg.TextBody = strError;
      objMsg.send();

      // Log error in output file
      var objTStreamLE = objFSO.CreateTextFile(ARG_REPORT_PATH + EXTRACT_FILE_NAME + ".txt", true);
      objTStreamLE.WriteLine(strError);
      objTStreamLE.Close();
    }
  }

  if (objRs.EOF) {
    objRs.Close();

    // check return code after closing the record set
    var rc = objCmd(0);
    if (rc == 100010) {
      WScript.Echo("Another instance is running. Bail out");
    } else if (rc == 0) {
      WScript.Echo("Found no records for users");
    } else {
      var objError = new Error(rc, STRING_SQL_FAILED);
      throw objError;
    }
  } else {
    // Update Last Update Date
    objCmd.ActiveConnection = objCon;
    objCmd.CommandText = QUERY_NAME_2;
    objCmd.CommandType = 4; // adCmdStoredProc
    objCmd.CommandTimeout = 1800;
    objCmd.Execute();

    var objTStreamLE = objFSO.CreateTextFile(ARG_REPORT_PATH + EXTRACT_FILE_NAME + ".txt", true);
    while (true) {
      if (objRs.EOF) {
        // we have to send the last mail
        strContentType = "";
      } else {
        var strApplicantID = new String(objRs("EmpID"));
        var strCourse_Code = new String(objRs("Event_Code"));
        var strCourse_Name = new String(objRs("Course_Name"));
        var strCompletion_Date = new String(objRs("Completion_Date"));
        var strGrade_Name = new String(objRs("Grade_Name"));

        var strBodyInfo = strApplicantID + DELIMITER +
          strCourse_Code + DELIMITER +
          strCourse_Name + DELIMITER +
          strCompletion_Date + DELIMITER +
          strGrade_Name;

        WScript.Echo(strBodyInfo);
        objTStreamLE.WriteLine(strBodyInfo);
      }

      if (objRs.EOF) {
        break;
      }

      objRs.MoveNext;
    }
    objTStreamLE.Close();
    objRs.Close();
  }

  var objConf = GetConfigCDO();
  var objMsg = WScript.CreateObject("CDO.Message");
  objMsg.Configuration = objConf;
  objMsg.To = ARG_EMAIL_TO;
  objMsg.From = ARG_EMAIL_FROM;
  objMsg.Subject = EMAIL_SUBJECT;
  objMsg.TextBody = EMAIL_SUBJECT;
  objMsg.send();

  EmailCount++; // How many email sent. it will be always one email in this case.

  objCon.Close();
} catch (e) {
  var objFSO = WScript.CreateObject("Scripting.FileSystemObject");
  var objTStreamErrorLog = objFSO.CreateTextFile(errorFile, true);
  objTStreamErrorLog.WriteLine(strMsg);


  if (e.description == STRING_SQL_FAILED) {
    strMsg = "Failed to execute " + QUERY_NAME_1 + ".\nReturn code:" + String(e.number);
  } else {
    strMsg = "Script causes an exception.\nException number: 0x" + String(e.number & 0xFFFF) + "\nDescription:" + e.description;
  }

  objTStreamErrorLog.WriteLine(strMsg);
  objTStreamErrorLog.close();

  var errorFile = ARG_REPORT_PATH + LOG_FILE_NAME;
  var theFile_1_Abs = objFSO.GetAbsolutePathName(errorFile);
  var objConf = GetConfigCDO();
  var objMsg = WScript.CreateObject("CDO.Message");
  objMsg.Configuration = objConf;
  objMsg.To = ARG_EMAIL_TO + ";" + ARG_EMAIL_FROM;
  objMsg.From = ARG_EMAIL_FROM;
  objMsg.Subject = EMAIL_SUBJECT_ERROR;
  objMsg.TextBody = "The attached file contains a error log file of any issues that arose during the DataExtract process";
  objMsg.AddAttachment(theFile_1_Abs);
  objMsg.send();

  WScript.StdErr.WriteLine(strMsg);
  WScript.Echo(strMsg);

  objFSO.DeleteFile(errorFile); // delete log file generated.

  var objShell = WScript.CreateObject("WScript.Shell");
  if (!objShell.LogEvent(1, "iX Learning Server Task(" + strScript + "): " + strMsg)) {
    WScript.StdErr.WriteLine("Failed to log an event");
  }
}

DateTimeNow = new Date();
strMsg = "Task ended at " + DateTimeNow.toLocaleString() + ". Total Messages Sent: " + EmailCount.toString();
WScript.Echo(strMsg);
WScript.StdErr.WriteLine(strMsg);

//
// END MAIN PROGRAM
//

＆＃13;

第二轮

＆＃13;

var QUERY_NAME_1 = "Custom_Extract_Second_Run";
var QUERY_NAME_2 = "Custom_Extract_UpdateDate";
var QUERY_NAME_3 = "Custom_Extract_GetRunStatus";
var LOG_FILE_NAME = "DataExtract_error.log";
var EXTRACT_FILE_NAME = "Extract";

var DB_SERVER_NAME = "sql6";
var DB_DATABASE_NAME = "database_name";
var DB_DATABASE_USER_NAME = "username";
var DB_DATABASE_PASSWORD = "password";

var DateTimeNow = new Date();
var DATE_VALUE = DateTimeNow.getDate() + "/" + (DateTimeNow.getMonth()+1) + "/" + DateTimeNow.getFullYear();
var EMAIL_SUBJECT_HEADER = "Email Extract Header - Extract Date - " + DATE_VALUE;
var EMAIL_SUBJECT = EMAIL_SUBJECT_HEADER + " Successful";
var EMAIL_SUBJECT_ERROR = "Unsuccessful - " + EMAIL_SUBJECT_HEADER;

var EmailCount = 0;
var DELIMITER = "|";
var STRING_SQL_FAILED = "SQL Failed";
var strScript = "";
var strMsg = "";

var ARG_REPORT_PATH = "";
var ARG_MAIL_SERVER = "";
var ARG_KEEP_BACKUP_COPIES = 0;
var ARG_EMAIL_FROM = "";
var ARG_EMAIL_TO = "";

function ParseCommandLineParams()
{
   var cmdArgs = WScript.Arguments;
   for(i = 0; i < cmdArgs.length; i++)
   {
      // Get next argument
      arg = cmdArgs(i);
        
      // Each argument is in the form a=b. Split the two components
      j = arg.search(/=/);
      if(j == -1)
      {
         WScript.Echo("Invalid arguments arg = " + arg);
         return false;
      }
                                                 
      argName  = arg.substring(0, j);
      argValue = arg.substring(j+1, arg.length);
      switch(argName)
      {
         case "/reportPath":
            ARG_REPORT_PATH = argValue;
            break;
         case "/mailServer":
            ARG_MAIL_SERVER = argValue;
            break;
         case "/keepBackupCopies":
            ARG_KEEP_BACKUP_COPIES = parseInt(argValue);
            break;
         case "/from":
            ARG_EMAIL_FROM = argValue;
            break;       
         case "/to":
            ARG_EMAIL_TO = argValue;
            break;
         default:
            WScript.Echo("Invalid arguments. Name = '" + argName + "' Value = '" + argValue + "'");
            return false;
        }
    }
    return true;
}


function DisplayUsage()
{
   WScript.Echo("Usage: cscript DataExtract.js");
   WScript.Echo("      [/m=<Report path directory where it creates file>]");
   WScript.Echo("      [/from=<from-line in email>] [/to=<to-line in email>]");
   WScript.Echo("      [/machinename=<Email Server name>] [/databaseConfig=<Database Config Setting file>]");
   WScript.Echo(" ");
   WScript.Echo("   /m              - unc path to mail directory      (default: ..\\reports\\)");
   WScript.Echo("   /from           - from-line in email              (default: Tejas Magia <>");
   WScript.Echo("   /to             - to-line in email                (default: Tejas Magia <>");
   WScript.Echo("   /machinename    - email server name               (default: EXCHANGE2 ");
   WScript.Echo("   /databaseConfig - DataBase Setup Config           (default: ..\\..\\..\\..\\config\\config.txt "); 

   return;
}

function DisplayParameters()
{
   WScript.Echo("Parameters:");
   WScript.Echo("      ARG_REPORT_PATH=[" + ARG_REPORT_PATH + "]");
   WScript.Echo("      ARG_EMAIL_FROM=[" + ARG_EMAIL_FROM + "]");
   WScript.Echo("      ARG_EMAIL_TO=[" + ARG_EMAIL_TO +"]");
   WScript.Echo("      ARG_MAIL_SERVER=["+ ARG_MAIL_SERVER +"]");
   WScript.Echo("      DB_SERVER_NAME=[" + DB_SERVER_NAME + "]");
   WScript.Echo("      DB_DATABASE_NAME=[" + DB_DATABASE_NAME+ "]");

   return;
}

function GetConfigCDO()
{
   var objConf = WScript.CreateObject("CDO.Configuration"); 
   objFields = objConf.Fields;       
   objFields.Item("http://schemas.Microsoft.com/cdo/configuration/sendusing") = 2;
   objFields.Item("http://schemas.microsoft.com/cdo/configuration/smtpserver") = ARG_MAIL_SERVER;
   objFields.Item("http://schemas.Microsoft.com/cdo/configuration/smtpserverport") = 25;
   objFields.Item("http://schemas.microsoft.com/cdo/configuration/smtpconnectiontimeout") = 30;
   objFields.Update();

   return objConf;
}

function GetDatabaseConnection()
{
   // SQLOLEDB is very sensitive to noise between client & server, and always mistaken certain
   // noise as returned result set; ODBC is better way to go for now
   var objCon = WScript.CreateObject("ADODB.Connection");
   objCon.Open(
                "Driver={Sql Server};APP=" + strScript + 
                ";Server=" + DB_SERVER_NAME +
                ";Database=" + DB_DATABASE_NAME +
                ";user id=" + DB_DATABASE_USER_NAME + 
                ";password=" + DB_DATABASE_PASSWORD +
                ";OLE DB Services=0"
                ); 

   return objCon;
}



//
// BEGIN MAIN PROGRAM
//

strMsg = "**************************************************";
WScript.Echo(strMsg);
WScript.StdErr.WriteLine(strMsg);

strScript = String(WScript.ScriptName);
DateTimeNow = new Date();
strMsg = strScript + " started at " + DateTimeNow.toLocaleString();
WScript.Echo(strMsg);
WScript.StdErr.WriteLine(strMsg);

if (!ParseCommandLineParams()) 
{
   DisplayUsage();
   WScript.Quit(0);
}

DisplayParameters();

try
{
   var objCon = GetDatabaseConnection();
   var objCmd = WScript.CreateObject("ADODB.Command");
   var objRs = null;

   var runStatus = 0;
   try
   {  
      // Get Run Status
      objCmd.ActiveConnection = objCon;
      objCmd.CommandText = QUERY_NAME_3;
      objCmd.CommandType = 4; // adCmdStoredProc
      objCmd.CommandTimeout = 1800;
      objRs = objCmd.Execute();

      runStatus = objRs("Status");
   }
   catch (er5)
   {
   }

   if (runStatus < 1)
   {
      objCmd.ActiveConnection = objCon;
      objCmd.CommandText = QUERY_NAME_1;
      objCmd.CommandType = 4; // adCmdStoredProc
      objCmd.CommandTimeout = 1800;
      var objParam = objCmd.CreateParameter("Return", 3, 4); // adInteger, adParamReturnValue
      objCmd.Parameters.Append(objParam);

      WScript.Echo("Before execution");
      if (ARG_KEEP_BACKUP_COPIES == 1) 
      {
         var objFSO = WScript.CreateObject("Scripting.FileSystemObject");
         if (objFSO.FileExists(ARG_REPORT_PATH + EXTRACT_FILE_NAME + "3.txt")) 
         {
            var File3 = objFSO.GetFile(ARG_REPORT_PATH + EXTRACT_FILE_NAME + "3.txt");
            File3.Delete();
         }
         if (objFSO.FileExists(ARG_REPORT_PATH + EXTRACT_FILE_NAME + "2.txt")) 
         {
            var File2 = objFSO.GetFile(ARG_REPORT_PATH + EXTRACT_FILE_NAME + "2.txt");
            File2.Move(ARG_REPORT_PATH + EXTRACT_FILE_NAME + "3.txt");
         }
         if (objFSO.FileExists(ARG_REPORT_PATH + EXTRACT_FILE_NAME + "1.txt")) 
         {
            var File1 = objFSO.GetFile(ARG_REPORT_PATH + EXTRACT_FILE_NAME + "1.txt");
            File1.Move(ARG_REPORT_PATH + EXTRACT_FILE_NAME + "2.txt");
         }
         if (objFSO.FileExists(ARG_REPORT_PATH + EXTRACT_FILE_NAME + ".txt")) 
         {
            var File0 = objFSO.GetFile(ARG_REPORT_PATH + EXTRACT_FILE_NAME + ".txt");
            File0.Move(ARG_REPORT_PATH + EXTRACT_FILE_NAME + "1.txt");
         }
      }

      try
      {  
         objRs = objCmd.Execute();
      }
      catch (er)
      {
         try
         {
            objRs = objCmd.Execute();
         } 
         catch (er2) 
         {
            try
            {               
               objRs.Close();
            }
            catch (er3)
            { 
               WScript.Echo("Error found even after 2nd run attempt!");
            }

            var strError = "An unexpected error has occured during the run of this routine. " +
                           "and send through a manual extract. If you do not hear back from us by 1pm, please do not hesitate to call " +
                           ".";

            // Send error email	    
            var objConf = GetConfigCDO();      
            var objMsg = WScript.CreateObject("CDO.Message");
            objMsg.Configuration = objConf;
            objMsg.To = ARG_EMAIL_TO + ";email@email.com.au";
//            objMsg.To = ARG_EMAIL_TO;
            objMsg.From = ARG_EMAIL_FROM;
            objMsg.Subject = EMAIL_SUBJECT_ERROR;
            objMsg.TextBody = strError;
            objMsg.send();

            // Log error in output file
            var objTStreamLE = objFSO.CreateTextFile(ARG_REPORT_PATH + EXTRACT_FILE_NAME + ".txt", true);
            objTStreamLE.WriteLine(strError);
            objTStreamLE.Close();
         }
      }

      if (objRs.EOF) 
      {
         objRs.Close();

         // check return code after closing the record set
         var rc = objCmd(0);
         if (rc == 100010) 
         {
            WScript.Echo("Another instance is running. Bail out");
         }
         else if (rc == 0) 
         {
            WScript.Echo("Found no records for users");
         }
         else
         {
            var objError = new Error(rc, STRING_SQL_FAILED); 
            throw objError;
         }
      }
      else
      {
         // Update Last Update Date
         objCmd.ActiveConnection = objCon;
         objCmd.CommandText = QUERY_NAME_2;
         objCmd.CommandType = 4; // adCmdStoredProc
         objCmd.CommandTimeout = 1800;
         objCmd.Execute();

         var objTStreamLE = objFSO.CreateTextFile(ARG_REPORT_PATH + EXTRACT_FILE_NAME + ".txt", true);
         while (true)
         {
            if (objRs.EOF) 
            {
               // we have to send the last mail
               strContentType = "";
            }
            else
            {
               var strApplicantID = new String(objRs("EmpID"));
               var strCourse_Code = new String(objRs("Event_Code"));
               var strCourse_Name = new String(objRs("Course_Name"));
               var strCompletion_Date = new String(objRs("Completion_Date"));
               var strGrade_Name = new String(objRs("Grade_Name"));

               var strBodyInfo = strApplicantID + DELIMITER + 
                                 strCourse_Code + DELIMITER + 
                                 strCourse_Name + DELIMITER + 
                                 strCompletion_Date + DELIMITER + 
                                 strGrade_Name;
   
               WScript.Echo(strBodyInfo);
               objTStreamLE.WriteLine(strBodyInfo);
            }

            if (objRs.EOF) 
            {
               break;
            }

            objRs.MoveNext;
         }
         objTStreamLE.Close();
         objRs.Close();
      }
	    
      var objConf = GetConfigCDO();      
      var objMsg = WScript.CreateObject("CDO.Message");
      objMsg.Configuration = objConf;
      objMsg.To = ARG_EMAIL_TO;
      objMsg.From = ARG_EMAIL_FROM;
      objMsg.Subject = EMAIL_SUBJECT;
      objMsg.TextBody = EMAIL_SUBJECT;
      objMsg.send();

      EmailCount++; // How many email sent. it will be always one email in this case.

   }
   objCon.Close();
}
catch (e)

＆＃13;

经过大量的测试和分析，我们无法查明根本原因，因为两个工作似乎间歇性地失败，有些夜晚提取产生数据，其他夜晚根本没有数据。以下是基于通过cmd手动运行的测试结果，以及通过任务产生间歇性失败和成功结果，没有特定模式。

测试结果：

通过命令提示符执行第一次运行第一轮 - 失败第二轮 - 失败第3次运行 - 成功第四轮 - 成功第五轮 - 成功

执行预定任务 - ＆＃39;首先运行＆＃39;

第一轮 - 成功第二轮 - 成功第3次运行 - 成功第四次运行 - 失败 - 调度程序失败第5次运行 - 失败 - 调度程序失败

执行计划任务 - 顺序优先，然后是第二次运行

第一次运行 - 首次运行成功，第二次运行成功但没有生成文件第二次运行 - 第一次运行失败，第二次运行 - 成功第三次运行 - 首次运行成功，第二次运行成功但没有生成文件第四次运行 - 首次运行失败，第二次运行 - 成功

可能的原因可能是由于超时;但是，每次运行都需要相同的时间才能完成（大约3分钟），无论是失败还是成功。

我们最近将环境从Windows Server 2005升级到Windows Server 2008，并注意到在实施后开始出现问题。没有对逻辑或SQL过程进行任何更改。 Server 2008会以这种方式处理逻辑以打破常规吗？

JavaScript提取会间歇性地失败

0 个答案: