DB Engine :: Timeout Exception After 15-20 Hours Of Continuous Run
Apr 23, 2015
I am getting SQL Time out exception after long run of 15-20 Hours, Please find the attachment for more details. My SQL queries  are not taking much time for execution , simple Update /Insert statements to local database.
Observed Activity manager also, looks fine. One more application connected to same database (Insert statements) works fine. In connection string I have modified Connection string ConnectTimeout = 2147483647; (max)
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May 18, 2006
Hello!I am looking for someone who has solved this multi-million people'sproblem. EVERYONE seems to ahve this problem.Im a creating a data set and populating it with a call to a store proc.Its a complex stored proc with the end result as an insert to a temptable. Then I do a select from the temp table - in the store proc.I get the following sqlException error on the following line:DataAdapterName.Fill(DataSetName, "TableName")The error is:Timeout expired. The timeout period elapsed prior to completion of theoperation or the server is not responding.My connectiong string looks like this:<add key="cnITDevWinUser" value="Data Source=server; IntegratedSecurity=SSPI; Initial Catalog=dbname; pooling=false;connectionreset=false;connection lifetime=5;min pool size=1;max poolsize=10;connection timeout=120" />I have admin rights on that db.I have set my command.timeout to 500.If i run this same code in a windows application, it works fine.If I use a DataReader with the same storeProc, it works fine.If I run this same code on a simple selec (hello world), it also worksfine.If I run this store proc in QueryAnalyzer it works fine and is donewithin 6 seconds.If I run this on a different machine it produces the same result.I am using SQL2000 with vb.net in VS2003.I have looked everywhere for the answer. I can't find it anywhere.PLEASE SOMEONE HELP.regards,Stas K.(a.k.a Sorcerdon)
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Mar 30, 2006
Fellow .Net'ers I have a stored procedure that I know takes a bit of time to complete. I have searched the Internet looking for ways to extend my timeout period for an ASP.net 2.0 page. I still only get 30 seconds ([SqlException (0x80131904): Timeout Expired]). I have tried: a) Server.ScriptTimeout = 90; (in the Page_Load)b) Connection Object setting: Connect Timeout=90Some have also recommended some SQL command property, but I can't find it in the new V2 SQLDataSource object. Im sure this is a common need, how do you get more time for your procedures to complete? Please advise. Thanks
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Mar 28, 2007
I've moved this to this forum to see if I can get an answer, there seem to be a lot of other people haveing the same problem, but no real answer. Please does anyone really understand this problem. I've been searching for months and am at wits end.
The problem - everytime I load my mdf database when it reaches the code line "me.Inventorytableadapter.fill...." I get a timeout expired error message. does anyone know how to corrected this problem, I keep reading about changing sqlcommand execute time, but I have to idea how that is done. If I changed my database to an access database would that resolve my problem. Any ideas will be appreciated.
Thank, IW
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May 3, 2007
I've been getting this error a lot lately when trying to connect, cannot find a particular pattern. It happens with the 2 databases I'm working with. I tried the Autoclose option disabled and I still get it, not as much though.
Also, I'm getting tons of login failed errors on the Event Viewer. I don't know how to debug those.
Version: 9.00.3042
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Jun 5, 2007
This is my code connect to SQL Server
SqlConnection con = new SqlConnection("Data Source=OIT;Initial Catalog=big_db;User ID=sa; Password=");
SqlDataAdapter cmd = new SqlDataAdapter("select * from myDB", con);
SqlCommand sqlCmd = new SqlCommand();
DataTable dt = new DataTable();
cmd.Fill(dt); // It throw exception
When myDB table have a lot of data, it throw exception like this : "It reached the time-out. Did the time-out period pass before completing the operation or the server doesn't respond. ". I config TCP/IP for SQL Server is Enable, but it throws SqlException too.
How can I do? Help me please!!!
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May 20, 2008
Hi,
I have a website where the user uploads DBF files and then i am calling a sproc to scrub the data and put them from the staging database to the production database. If the folder size small may be less that 6 it transfers the data from the staging database to the production.. But if the size of the folder is big.. more the 6 mb i get an timeout exception.. But i know the data is been put in few tables in the production databse..
for eg... if the size of the file is 33mb it takes around 15 mins or so for the sproc to process . I have tried setting the connect and commd timeout whcih has not helped.. I tried increasing the server.script time and it fails too..
this is the error in my event viewer
Error: System.Data.SqlClient.SqlException: Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding.
No Changes made to the ClientPlan table.
Inserting records(s) in ClientPlan table.
No Changes made to ClientPlan table.
at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection)
at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection)
at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj)
at System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj)
at System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString)
at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async)
at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, DbAsyncResult result)
at System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(DbAsyncResult result, String methodName, Boolean sendToPipe)
at System.Data.SqlClient.SqlCommand.ExecuteNonQuery()
at Microsoft.ApplicationBlocks.Data.SqlHelper.ExecuteNonQuery(SqlConnection connection, CommandType commandType, String commandText, SqlParameter[] commandParameters)
at Microsoft.ApplicationBlocks.Data.SqlHelper.ExecuteNonQuery(String connectionString, CommandType commandType, String commandText, SqlParameter[] commandParameters)
at Microsoft.ApplicationBlocks.Data.SqlHelper.ExecuteNonQuery(String connectionString, String spName, Object[] parameterValues)
at icc.BaseClasses.DL.DLImportPlan.Import(Int32 ClientId, DateTime StartDate, DateTime EndDate, Int32 UserId) in C:Documents and SettingskroslundMy DocumentskareniccPlanStatementsiccImportDLDLImportPlan.cs:line 120
For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
any help will be appreciated.
Regards
Karen
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Feb 4, 2008
Hi,
I'm running a CLR stored procedure through my web using table adapters as follows:
res = BLL.contractRateAdviceAdapter.AutoGenCRA() 'with BLL being the business logic layer that hooks into the DAL containing the table adapters.
The AutoGen stored procedure runs fine when executed directly from within Management Studio, but times out after 30 seconds when run from my application. It's quite a complex stored procedure and will often take longer than 30 seconds to complete.
The stored procedure contains a number of queries and updates which all run as a single transaction. The transaction is defined as follows:
----------------------------------------------------------------------------------------------------------------------
options.IsolationLevel = Transactions.IsolationLevel.ReadUncommittedoptions.Timeout = New TimeSpan(1, 0, 0)
Using scope As New TransactionScope(TransactionScopeOption.Required, options)
'Once we've opened this connection, we need to pass it through to just about every
'function so it can be used throughout. Opening and closing the same connection doesn't seem to work
'within a single transactionUsing conn As New SqlConnection("Context Connection=true")
conn.Open()
ProcessEffectedCRAs(dtTableInfo, arDateList, conn)
scope.Complete()
End Using
End Using
----------------------------------------------------------------------------------------------------------------------
As I said, the code encompassed within this transaction performs a number of database table operations, using the one connection. Each of these operations uses it's own instance of SQLCommand. For example:
----------------------------------------------------------------------------------------------------------------------Dim dt As DataTable
Dim strSQL As StringDim cmd As New SqlCommand
cmd.Connection = conn
cmd.CommandType = CommandType.Text
cmd.CommandTimeout = 0Dim rdr As SqlDataReaderstrSQL = "SELECT * FROM " & Table
cmd.CommandText = strSQL
rdr = cmd.ExecuteReader
SqlContext.Pipe.Send(rdr)
rdr.Close()
----------------------------------------------------------------------------------------------------------------------
Each instance of SQLCommand throughout the stored procedure specifies cmd.CommandTimeout = 0, which is supposed to be endless. And the fact that the stored procedure is successful when run directly from Management studio indicates to me that the stored procedure itself is fine. I also know from output messages that there is no issues with the database connection.
I've set the ASP.Net configuration properties in IIS accordingly.
Are there any other settings that I need to change?
Can I set a timeout property when I'm calling the stored procedure in the first place?
Any advice would be appreciated.
Thanks
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Feb 13, 2006
Hi,
I have a program in C# that I used to run on Visual Studio 2000 and SQL Server 2000 without any problem.
Now I upgrade to VS2005 and SQL Server 2005 and get and exception while
insert via SqlCommand.ExecuteNonQuery(). the insert is after many inserts to the same table by that program. the CommandTimeout is set to 600 (in the 2000 version I never had to change the default value of 30 seconds).
the insert is through a connection that is kept open throughout the program for more than 30 minutes
the exception message is:
Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding.
the trace is:
at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection)
at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection)
at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj)
at System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj)
at System.Data.SqlClient.SqlCommand.RunExecuteNonQueryTds(String methodName, Boolean async)
at System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(DbAsyncResult result, String methodName, Boolean sendToPipe)
at System.Data.SqlClient.SqlCommand.ExecuteNonQuery()
Thanks for your help !
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Dec 5, 2006
Hi,
We have built two testing apps for sending and receiving files across the network reliably using SQL Express as the database backend. The apps seem to be working fine under light load. However during stress test, we always get the following exception:
"System.Data.SqlClient.SqlException: Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding."
During stress test, both the sender and receiver are running on the same machine. Sender creates file fragments, store them in the sender database and then send out to the network. File fragments will be deleted from the sender database when the sender receives acknowledgement from the receiver. On the receiver side, file fragments will be stored in the receiver database as they are coming in from the network. Corresponding file fragments will be deleted from the receiver database when a complete file is received.
There is maximum of about 1500 updates and 1500 deletes per second on the sender database. On the receiver side, maximum is about 300 updates and 300 deletes per second. Our goal is to send 30 GB of data (it should run for about 10 hrs). As said before we never have a good completed test run, a "timeout" exception is always thrown from the sender app (when it tries to end a transaction). It could happen as early as 1.5 hrs after we started the test. Note that although we are sending 30 GB of data, but at any point in time the database shouldn't be too big (should be well within 4 GB limit) because we delete file fragments relatively soon.
Next we changed the "Query Wait" setting in the Management Studio Advanced setting from the default "-1" to a very big number, then we have a successful run of sending 30 GB of data.
- First of all, are we not doing this properly in terms of dealing with SQL Express? Is SQL Express able to handle long running heavy load transactions for hours?
- We also noticed even before we got the timeout exception, the memory usage of sqlserver.exe keeps growing. Maybe it doesn't have a chance to cleanup internally. If the app hammers SQL Express for hours, I wonder how does it handle fragmentation? I assume it needs some sort of de-fragmenation, otherwise performance will degrade significantly...
- Seems like the Query Wait setting plays an important role here, any guideline on how to pick a reasonable value? Or should we pick a relatively small number and then do re-try in our app when we get timeout exceptions?
- Is it possible that we are running into some SQL Express resource limits? Any idea of how can we tell other than the VM size of sqlserver.exe?
Any help or suggestions would be greatly appreciated!
Thanks very much
W Wong
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Oct 26, 2007
Hello. I've read some similar topics (most of them on this forum), but none of them helped.
I have a stored procedure which runs fine on SQL Server (in 0 ms). The problem occurs when i try to run it under a WindowsForm application (C#).
The following code
Code Block
SqlCommand cmdUpdate;
SqlConnection sqlCon = GetConnection();
cmdUpdate = new SqlCommand("StoredProcedure_Name", sqlCon);
cmdUpdate.CommandType = CommandType.StoredProcedure;
sqlCon.Open();
cmdUpdate.CommandTimeout = 300;
cmdUpdate.ExecuteNonQuery();
produces the exception: "Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding." on the ExecuteNonQuery() line.
It's not a problem with the CommandTimeout or the ConnectionTimeout (from within the connection string), they are both set to 300 (and even when set to 0, the problem is the same).
It's very strange, because only two stored procedures don't work, the others work without any problems and under SQL Server (using EXEC stored_procedure) all of them work fine. It seems like the stored procedure is executed, but no response is returned to the client (the WinForm app), thus the timeout exception.
Any ideas? Thanks.
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Sep 23, 2015
My requirement is to sling a rowset from one place in SQL server into a table in another place in the most performant way. I want this to be parameterizable - I want to provide just a connection string and some SQL for the source and a connection string and a table name for the destination. The package should do the rest.Â
The solution I chose was an 2014 SSIS package with source and destination as ADO.NET connections configured from project variables. The package has a script task to bulk copy the data. For performance I disable the non-clustered indexes first.Â
But this performance precaution causes the bulk copy to timeout after delivering the correct rowcount to the destination table. What I can do to avoid this error?
Here's my script code:
//get hold of the source and a data reader from it
SqlConnection sqlconnSource = new SqlConnection();
sqlconnSource = (SqlConnection)(Dts.Connections["source"].AcquireConnection(Dts.Transaction) as SqlConnection);
SqlCommand sourcesqlCommand = new SqlCommand(SourceSQL, sqlconnSource);
sourcesqlCommand.CommandTimeout = 1500;
[Code] ....
This takes 128 seconds to put 13 million thin rows into my empty destination table and then throws an exception with this message:
Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding.
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Jul 8, 2015
Have 6 SQL Server 2012  failover clusters  environments on Windows 2012 R2 standard edition.Have intermittent connectivity issues when using Windows Authentication, with the error "test connection failed because of an error in initializing provider. login timeout expired" . Am checking by using a UDL file and have tried the below.
1) Have made port changes to use static 1433 port.
2) Have enabled shared memory and using Named Pipes and TCP/IP by using cliconfig.
3) Have turned off firewall.
4) Loopback is disabled
5) SQL Browser is running, have changed 'Built in Account setting' Â from 'Local Service' to 'Network Service'. but with no effect.
Still I am getting intermittent connectivity issues.
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Apr 22, 2015
I want to display Days Hours Mins Format.
I am Having two columns Like below,
Col1 (in days) Â Â col2 (In Hours : Mins)
3days 4:5Â
In this first have to  add Col1 and Col2 (Here one day is equals to 9 hours ) so the addition is 31.5
From this 31.5 I should display 3 Days 4 Hours 30 Mins because 31.5 contains 3 (9 hours) days 4 Hours and .5 is equals to 30 mins.
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Sep 21, 2006
I have data coming from a telephony system that keeps track of when anemployee makes a phone call to conduct a survey and which project numberis being billed for the time the employee spends on that phone call in aMS SQL Server 2000 database (which I don't own).The data is being returned to me in a view (see DDL for w_HR_Call_Logbelow). I link to this view in MS access through ODBC to create alinked table. I have my own view in Access that converts the integernumbers for start and end date to Date/Time and inserts some otherinformation i need.This data is eventually going to be compared with data from someelectronic timesheets for purposes of comparing entered hours vs hoursactually spent on the telephone, and the people that will be viewing thedata need the total time on the telephone as wall as that total brokendown by day/evening and weekend. Getting weekend durations is easyenough (see SQL for qryTelephonyData below), but I was wondering ifanyone knew of efficient set-based methods for doing a day/eveningbreakdown of some duration given a start date and end date (with theday/evening boundary being 17:59:59)? My impression is that to do thiscorrectly (i.e., handle employees working in different time zones,adjusting for DST, and figuring out what the boundary is for switchingfrom evening back to day) will require procedural code (probably inVisual Basic or VBA).However, if there are set-based algorithms that can accomplish it inSQL, I'd like to explore those, as well. Can anyone give any pointers?Thanks.--DDL for view in MS SQL 2000 database:CREATE VIEW dbo.w_HR_Call_LogASSELECT TOP 100 PERCENT dbo.TRCUsers.WinsID, dbo.users.username ASInitials, dbo.billing.startdate, dbo.billing.startdate +dbo.billing.duration AS EndDate,dbo.billing.duration, dbo.projects.name ASPrjName, dbo.w_GetCallTrackProject6ID(dbo.projects.descript ion) AS ProjID6,dbo.w_GetCallTrackProject10ID(dbo.projects.descrip tion) AS ProjID10,dbo.billing.interactionidFROM dbo.projects INNER JOINdbo.projectsphone INNER JOINdbo.users INNER JOINdbo.TRCUsers ON dbo.users.userid =dbo.TRCUsers.UserID INNER JOINdbo.billing ON dbo.users.userid =dbo.billing.userid ON dbo.projectsphone.projectid =dbo.billing.projectid ONdbo.projects.projectid = dbo.projectsphone.projectidWHERE (dbo.billing.userid 0)ORDER BY dbo.billing.startdateI don't have acess to the tables, but the fields in the view comethrough as the following data types:WinsID - varchar(10)Initials - varchar(30)startdate - long integer (seconds since 1970-01-01 00:00:00)enddate - long integer (seconds since 1970-01-01 00:00:00)duration - long integer (enddate - startdate)ProjID10 - varchar(15)interactionid - varchar(255) (the identifier for this phone call)MS Access SQL statement for qryTelephonyData (based on the view,w_HR_Call_Log):SELECT dbo_w_HR_Call_Log.WinsID, dbo_w_HR_Call_Log.ProjID10,FORMAT(CDATE(DATEADD('s',startdate-(5*60*60),'01-01-197000:00:00')),"yyyy-mm-dd") AS HoursDate,CDATE(DATEADD('s',startdate-(5*60*60),'01-01-1970 00:00:00')) ASStartDT,CDATE(DATEADD('s',enddate-(5*60*60),'01-01-1970 00:00:00')) AS EndDT,DatePart('w',[StartDT]) AS StartDTDayOfWeek, Duration,IIf(StartDTDayOfWeek=1 Or StartDTDayOfWeek=7,Duration,0) ASWeekendSeconds,FROM dbo_w_HR_Call_LogWHERE WinsID<>'0'
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Jan 16, 2008
Greetings everyone, I am attempting to build my first application using Microsofts Sql databases. It is a Windows Mobile application so I am using Sql Server Compact 3.5 with Visual Studio 2008 Beta 2. When I try and insert a new row into one of my tables, the app throws the error message shown in the title of this topic.
'((System.Exception)($exception)).Message' threw an exception of type 'System.NotSupportedException'
My table has 4 columns (i have since changed my FavoriteAccount datatype from bit to Integer)
http://i85.photobucket.com/albums/k71/Scionwest/table.jpg
Account type will either be "Checking" or "Savings" when a new row is added, the user will select what they want from a combo box.
Next is a snap shot of my startup form.
http://i85.photobucket.com/albums/k71/Scionwest/form.jpg
Where it says "Favorite Account: None" in the top panel, I am using a link label. When a user clicks "None" it will go to a account creation wizard, and set the first account as it's primary/favorite. As more accounts are added the user can select which will be his/her primary/favorite. For now I am just creating a sample account when the label is clicked in an attempt to get something working. Below is the code used.
private void lnkFavoriteAccount_Click(object sender, EventArgs e)
{
FinancesDataSet.BankAccountRow account = this.financesDataSet.BankAccount.NewBankAccountRow();
account.Name = "MyBank Checking Account";
account.AccountType = "Checking";
account.Balance = Convert.ToDecimal("15.03");
account.FavoriteAccount = 1;//datatype is an integer, I have changed it since I took the screenshot.
financesDataSet.BankAccount.Rows.Add(account);
//The next three lines where added while I was trying to get this to work.
//I don't know if I really need them or not, I receive the error regardless if these are here or not.
this.bankAccountTableAdapter1.Update(financesDataSet);
this.financesDataSet.AcceptChanges();
refreshDatabase();
}
the refreshDatabase() code is here:
private void refreshDatabase()
{
this.bankAccountTableAdapter1.Fill(this.financesDataSet.BankAccount);
//Aquire a count of accounts the user has
int numAccounts = financesDataSet.BankAccount.Count;
//Loop through each account and see which one is the primary.
for (int num = 0; num != numAccounts; num++)
{
//Works ok in frmMain_Load, but when my lnkFavoriteAccount_click calls this, it throws the error.
if (this.financesDataSet.BankAccount[num].FavoriteAccount == 1)
{
//Display the primary account on our home page. User can click the link label & be taken to their account register.
this.lnkFavoriteAccount.Text = this.financesDataSet.BankAccount[num].Name.ToString();
this.lnkFavoriteFunds.Text = this.financesDataSet.BankAccount[num].Balance.ToString();
break;
}
}
}
and my form_load code
private void frmMain_Load(object sender, EventArgs e)
{
refreshDatabase();
}
So, when I click on the lnkFavoriteAccount label, and my new row gets added, the app stops at the following line in my DataSet.Designer
[global:ystem.Diagnostics.DebuggerNonUserCodeAttribute()]
public byte FavoriteAccount {
get {
try {
return ((byte)(this[this.tableBankAccount.FavoriteAccountColumn]));
}
catch (global:ystem.InvalidCastException e) {
//Stops at the following line, this error was caused by 'if (this.financesDataSet.BankAccount[num].FavoriteAccount == 1)'
throw new global:ystem.Data.StrongTypingException("The value for column 'FavoriteAccount' in table 'BankAccount' is DBNull.", e);
}
}
set {
this[this.tableBankAccount.FavoriteAccountColumn] = value;
}
}
I have no idea what I am doing wrong, all of the code I used I retreived from Microsofts help documentation included with VS2008. I have tried used my TableAdapter.Insert() method and it still failed when it got to
if (this.financesDataSet.BankAccount[num].FavoriteAccount == 1)
in my refreshDatabase() method it still failed.
When I look, the data has been added into the database, it's just when I try to retreive it now, it bails on me. Am I retreiving the information wrong?
Thanks for any help you guys can offer.
Johnathon
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May 13, 2008
I have a float variable that holds a decimal number of hours.
So 1.5 equals 1 hour 30 minutes.
I need to change this to the format 1:30
Any idea how to do this?
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Jan 31, 2007
Hi,
I got an strange problem with one of my packages.
When running the package in VisualStudio it runs properly, but if I let this package run as part of an SQL-Server Agent job, I got the message "The script threw an exception: Exception of type 'System.OutOfMemoryException' was thrown." on my log and the package ends up with an error.
Both times it is exactly the same package on the same server, so I don't know how the debug or even if there is anything I need to debug?
Regards,
Jan
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May 26, 2008
Hi,
does anyone know if it is possible to set an alert like that ?
if cpu is over 85% and stay for more then 1min continuous over 85%then alert.
THX
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Jun 20, 2008
hai,
set dateformat dmycreate table tbl_sampemptable(employeeid int,StartDate datetime)
declare @employeeid intset @employeeid=1declare @startdate datetime,@enddate datetimewhile(@employeeid<=1000)begin set @startdate='01/05/2008' set @enddate='31/05/2008' while(@startdate<=@enddate) begin if(@employeeid<>1 and @startdate<>'02/05/2008') insert into tbl_sampemptable values (@employeeid,@startdate) else if(@employeeid=1) insert into tbl_sampemptable values (@employeeid,@startdate)z set @startdate=dateadd(day,1,@startdate)
endset @employeeid=@employeeid+1end
select * from tbl_sampemptabledrop table tbl_sampemptableset dateformat mdy
i have to select records depending on @count parameter to this table.Depending on this parameter value it should fetch sequential dates.For example
if @count=2then result should be like this,
EmployeeID FromDate ToDate
1 01/05/2008 02/05/2008
1 03/05/2008 04/05/2008
.
.
2 03/05/2008 04/05/2008 //note that here 01/05/2008 is not selected
because 02/05/2008 is missing
2 05/05/2008 06/05/2008
.
.
3 03/05/2008 04/05/2008 //note that here 01/05/2008 is not selected
because 02/05/2008 is missing
3 05/05/2008 06/05/2008
.
.
if @count=3 then result should be like this,
EmployeeID FromDate ToDate
1 01/05/2008 03/05/2008
1 04/05/2008 06/05/2008
.
.
2 03/05/2008 05/05/2008 //note that here 01/05/2008 is not selected
because 02/05/2008 is missing
2 06/05/2008 08/05/2008
.
.
3 03/05/2008 05/05/2008 //note that here 01/05/2008 is not selected
because 02/05/2008 is missing
3 06/05/2008 08/05/2008
.
. how can i do this.please help me.thanks in advance
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Mar 7, 2008
I am fairly new to SQL 2005 and have taken over a migration project from 2000 to 2005 and one of our scheduled jobs seem to run forever, but do not have errors. This did not happen in the past so I was wondering if the agent settings for Replication Merge has the -Continuous parameter will the job ever complete or does it really run "continuously"?
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Jun 6, 2006
Hi,
l've a series of day which record the date of an event. l would like to count the # of continuous days for the event. In this case, it would be 14/5, 15/5, 16/5, 17/5, 18/5, 19/5 and 20/5. Any idea to do this in SQL?
Date
-----
20/5
19/5
18/5
17/5
16/5
15/5
14/5
09/5
07/5
06/5
05/5
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Nov 22, 2006
Hi,
The time column type is SMALLDATETIME. Data is inserted every minute, but it isn't occured always.
When I display the contents, I want show every time(minute). If a specific time is skipped, it should be display as data zero.
Someone help?
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Oct 23, 2007
Hello,
I have a question regarding whether or not Data Mining can be utilized in a specific problem I have to solve.
Situation: I€™m going to simplify the problem by explaining it in terms of a €œpizza manufacturer€?. Suppose I wanted to predict the run minutes + downtime minutes (I use these to get an hourly rate: Pizzas/(run hrs + delay hrs) = Pizzas per hour) by looking at a set of input properties.
My properties could be something like the following:
# of Toppings
# of Special Pricing Stickers
Cardboard Box Indicator
Case Indicator (0 represents auto-casing, 1 represents putting in case by hand)
Machine Type (0 or 1€¦ 0 represents an older €“slower machine, 1 is newer)
Quantity of Run
(there could be up to 15 other properties that may or may not impact our rate)
Measured Values:
Run Minutes
Delay (down) minutes
Steps I€™ve Done So Far:
I€™ve created a couple different data mining models for this as I was unsure which one(s) to use. I checked the lift chart while feeding back in the original data set and my scatter plot appeared fairly inaccurate.
I've attempted to use Excel to create a linear regression, however my r squared value was always around .30. I decided to try to use SQL Server Data Mining to see if it could be something to help predict our accuracy better than a linear formula.
I've played with a couple different algorithms in Data Mining, and it appeared that none of them did exceptionally well with prediction. I even checked the lift chart using the same table as I used to train the model.
What algorithm(s) might work the best?
Can I reasonably expect a prediction within a fairly strict tolerance (I'm guessing the answer to this is: "yes, if your source data represents a consistent pattern")?
How can I best utilize Data Mining to give an answer like "historically, your run rate has been between these 2 values with a probability of X". I'm thinking I can utilize the predictprobability and stdev to some extent.
Any suggestions would be greatly appreciated.
If anyone needs further clarification, please let me know.
Thank you.
Regards,
Dan
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Apr 27, 2007
I am having one question about discretization of continous attributes
values. How does it work? I need this information for my thesis. I have a
continous attribut, namely SKS, with range 0-20. When I use Microsoft
Decision Tree algorithm, this attribut split in SKS <= 18 and SKS > 18. I
want to know how does it find 18 as a number to split not the other.
One question again about Microsoft Decision Tree algorithm, about
Complexity_Penalty parameter. How does it affect the algorithm? For example,
if I set this value=0.1 what does it mean and how does it correspond with
growth tree?
Thanks a lot before for your kindness to answer my questions.. :-)
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Sep 19, 2007
Hi All,
I was wondering if there was a way to specify a range when training a model to predict continuous variables. For instance, the predicted variable can only have a range of 1 - 10.
Thanks
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Jan 29, 2002
Does anyone know exactly how to create a trace that runs continuously on a server and writes the data to a table? Now I know how to create a trace file with the profiler, but I want something set up so that I don't have to have the profiler running on the server all the time. As well as soemthing that will restart itself if the server is rebooted. I have been looking at these x(xp_trace.*) procedures. Is this the way to do it?
I have to trap login information in a table and have a scheduled job that runs once a month and look for specific data in the table and send out e-mails based on certain values.
I have written the procedure which does this I just need to know how to set up the trace so it runs in the background continuously.
Can anyone help?
Thanks............
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Oct 4, 2012
I have a table with below data. Requirement is to replace all integers with continuous 6 or more occurrences with 'x'. Less than 6 occurrences should not be replaced.
create table t1(name varchar (100))
GO
INsert into t1
select '1234ABC123456XYZ1234567890ADS'
GO
INsert into t1
select 'cbv736456XYZ543534534545XLS'
GO
EXPECTED RESULT:
1234ABCxxxxxxXYZxxxxxxxxxxADS
cbvxxxxxxXYZxxxxxxxxxxxxXLS
drop table t1
-----Table Proc Index Performance TSQL &&%$#@*(#@$%.......------------
Deep Into SQL Jungle
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Mar 21, 2008
Hi...My first post.
I'm currently creating a SSIS package that takes data from 3 unique databases. A SQL DB, FoxPro DB, and an Oracle DB. The data is pulled, cleansed and put into a single SQL 2005 table. The data is then pulled from this table every 15 minutes, formated in a given specification and uploaded to an ftp site. This part is done. My question is this:
This package needs to run around the clock, non-stop. How can package be set up to do this? It needs to pull data from the 3 DBs and put it in the common table, wait 15 minutes and do it again. Wait 15 more mintues and do it again. And so forth. A problem I'm having is I don't see a way to set up a SSIS package so that it runs around the clock.
On same premise, I have another issue. When I try to take data from the common table and there is nothing there, it causes an error. Is there some way that you can run a test like
SELECT * FROM _table_ WHERE is_sent = 0
if results == 0
{
wait 15 minutes and test again.
}
else if
{
write flat file, wait 15 minutes.
}
This has to be done in the Control Flow scope, so I can't use a conditional split. This is a pretty big deal as this needs to run around the clock. Thank you in advance for your assistance.
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Apr 11, 2007
I was wondering if anybody knows how to solve this problem. Here's the setup.
There is an ASP.NET application running on a local web server at the customer's location, it currently uses a MSDE backend database. There is a copy of the application on the customer's webhosting company so it can be accessed from outside the customer's location it is running on a full version of SQL Server 2000. We have this setup because the customer's ISP is not very reliable and the customer needs to be able to use the application even when their web connection is down. It is also used from outside their location by sales people and management and remote offices. The problem is we want to keep both databases synchronized together. We had been using Merge Replication which was working fine until the local ID jumped because it had run out of allocated identities. This causes a problem for their accounting because now there is a gap in the document's numbers.
Is there a way to have the identity field (or a generated document number) to remain continuous and unique across both databases? This needs to also work if one of the databases were to go down for a time or lose connectivity between the two servers. I'm looking for any option. We also have the option of upgrading the application to SQL Server 2005 if needed. Any ideas are appreciated.
Thanks,
Seth
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Aug 22, 2006
Hi
I have set up merge replication and it works nicely.
I have set it up to work continuously, because I thought that if it can't find the subscriber or is offline then that's fine it will just sync again when it's back on line.
This is true
BUT it keeps throwing lots of messages into the event log to tell me the merge has failed.
SO
a. Can i just turn off the error reporting
or
b. How can I get it to sync this way automatically on connection without the error messages
thanks
ICW
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Mar 4, 2007
I have one data pump in a series that was pumping in too many records. Doing an independent query of the source table, I found there was about 140,000 records. My pump uses a variable for the source query, nothing fancy just a simple SELECT * FROM table WHERE DateField > '4/6/2006 12:00:00AM'. The Destination is local on the SQL Server and is set by a variable, and does a fast load. When I went away and checked in BIDS while it was running (the data flow tab where you can see the record count) it was at 28,000,000 and still going!
Any ideas what could be causing this? As I say there are only 140,000 records and no joins in the query--is this a bug someone has run into before?
Thanks,
Kayda
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Dec 18, 2007
It seems i face a problem with the Microsoft Decision Trees model when i have a predictable variable that is continuous.
I have created the whole model according to the AdventureWorks tutorial (and it informs me that the same procedure is followed with a continuous variable) and i have flagged the variable as continuous. Even though everything seems be going well, the results i get are not correct (after a cross check with another project already done and checked).
Is there something i am missing or i skipped while creating the model? Any suggestions that may help me are appreciated
Thank you in advance
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