Invalid Attempt To Read When No Data Is Present.
Apr 23, 2008
I'm writing my first .net app in VB.net. I can connect to my database, but get the following error when I try to set a label value. (My code is listed below) What am I missing?
Exception Details: System.InvalidOperationException: Invalid attempt to read when no data is present.
Source Error:
Line 19:
Line 20: reader = comm.ExecuteReader()
Line 21: EmployeesLabel.Text = reader.Item("tkinit")
Line 22:
Line 23: reader.Close()
<%@ Page Language="VB" %>
<%@ Import Namespace="System.Data.SqlClient" %>
<%@ Import Namespace="System.Configuration" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)
Dim conn As SqlConnectionDim comm As SqlCommand
Dim reader As SqlDataReaderDim connectionString As String = ConfigurationManager.ConnectionStrings("IntegratedDataConnectionString").ConnectionString
conn = New SqlConnection(connectionString)
comm = New SqlCommand("Select top 1 tkinit from tEliteTimeKeep", conn)
conn.Open()
reader = comm.ExecuteReader()EmployeesLabel.Text = reader.Item("tkinit")
reader.Close()
conn.Close()
End Sub
</script><html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server"><title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Label ID="EmployeesLabel" runat="server" ></asp:Label>
</div></form>
</body>
</html>
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May 16, 2008
My query actually returns rows but when I run, I get this error "Invalid attempt to read when no data is present". It says that the datareader does not return any rows.
Please help.
Thanks in advance
Sangita
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Nov 1, 2006
I have a stored procedure that inserts a record, and then either returns an error or, when successful, returns the entire row. This is a method I use on sites I have developed in other languages when inserting or updating data; I am new to c#.
With C# I have a datareader executing the sp, and the insert works fine, however I get the error "Invalid attempt to read when no data is present." when I try to read the data that should be coming back. I have researched and updated my code so that I no longer get the error, but I still cannot get the data back. I trap the sp in profiler, ran it in anaylzer, and it works fine - data is returned. But in the code, it does not see the data.
I have modified the return results so now I just have the ID coming back and that works fine. But I would rather just return the entire row. Can this be done, and if so, how?
Thanks.
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Jul 25, 2007
I am using a standard dbreader type of loop in a query to retrieve data. I am running over what should be end of record set, every time.
I have altered my read procedures to use while dbreader.read() and if dbreader.read(), to attempt to avoid getting the error. Neither is stopping it.
While debugging it, as I get to the last item and actually get the error, if I check the dbreader status, it still indicates that it has rows.
Anyone have any ideas on how to get around this?
TIA, Tom
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Sep 26, 2006
when execute
If IsDBNull(sqlreader.GetValue(i)) Then
Error info:Invalid attempt to read when no data is present
but i am sure there were records
Any ideas? Regards
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Jan 3, 2008
I am getting this error even though there should be data present. When I test the SQL statement in query analyzer, it returns 1 row.
<%@ Import Namespace="System.Data.SqlClient" %><%@ Page Language="VB" MasterPageFile="~/MasterPage.master" Title="Blog" %>
<script runat="server">Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)
Dim strConnection As String = System.Configuration.ConfigurationManager.ConnectionStrings("currentConnection").ToString 'currentConnection is defined in web.config and works when used in other pages on the siteDim dbConn As SqlConnection = New SqlConnection(strConnection)
dbConn.Open()
Dim strSelectCommandFirstEntry As String = "SELECT MAX(blogEntryId) as maxID FROM site_Blog"Dim cmdFirstEntry As SqlCommand = New SqlCommand(strSelectCommandFirstEntry, dbConn)Dim rdrFirstEntryData As SqlDataReader = cmdFirstEntry.ExecuteReader()Dim strFirstEntryData As Int32 = rdrFirstEntryData(0) 'error occurs here, i have also tried rdrFirstEntryData("maxID") with same errorrdrFirstEntryData.Close()dbConn.Close()
</script>
When debugging this code and stopping on this line:
Dim strFirstEntryData As Int32 = rdrFirstEntryData(0)
rdrFirstEntryData has the following values:hasRows = True, FieldCount=1, Item=In order to evaluate an indexed property, the property must be qualified and the arguments must be explicitly supplied by the user. and when i click the refresh button...Item = Overload resolution failed because no accessible 'Item' accepts this number of arguments.
I suspect that the note for "Item" is my clue to the source of the problem, but I don't know what it means. Please, help.
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Jul 2, 2004
I'm trying to determine if the record is NULL/empty or is valid from the datareader.
objReader = strCMD.ExecuteReader
objReader.Read()
if objReader.IsDBNull(0) = true then...
If NULL/Empty, display no records found. If records are found, display "1 or more records have been found". I keep getting the error "Invalid attempt to read when no data is present". I'm not sure what I am doing wrong here.
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Aug 12, 2015
SSIS script task fail with error message-SSIS script task fail error message Error: Cannot load Counter Name data because an invalid index '' was read from the registry.
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Aug 11, 2007
I was going to post a long message but I found the problem. Yet I do not know how to correct it efficiently.I have a request to my DB using that kind of code : With SQL_Commande valiSqlConnection(True) ' Configure SQL_Commande. .Connection = SQL_Connection .CommandText = "_Fonctions_valiUtilInfo" .CommandType = Data.CommandType.StoredProcedure .Parameters.Clear() Dim SQL_Lecteur As SqlDataReader = SQL_Commande.ExecuteReader If SQL_Lecteur.Read And Not IsDBNull(SQL_Lecteur(0)) Then Return SQL_Lecteur(0) Else Return Nothing valiSqlConnection(False, SQL_Lecteur) End WithMy problem is that I need use a function within the "With" section, and that function calls a request on the DB then closes the query, and when it gets back at executing the remaining part of the code, it stop saying that the query is closed and cannot be excuted anymore. How can I nest a query within an other one without having this problem?
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Jun 6, 2006
I am getting this exception sporadically in a certain block of code (it usually works):
"System.InvalidOperationException: Invalid attempt to MetaData when reader is closed"The code is below:
cmd.CommandText = "[dbo].CountryGetList";
cmd.CommandType = CommandType.StoredProcedure;
IDataReader rdr = cmd.ExecuteReader();
List countries = new List();
...
while (rdr.Read())
{
//do stuff
CountryID = (Guid)rdr["CountryID"]; //blows up on the next line cty.Name = (string)rdr["Name"]; } }
rdr.Close();
Any ideas!?
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Dec 13, 2007
Since installing Reporting Services on my machine, I have been getting an error whenever I try to execute a reader.read line.
When I ran the same exact code on another machine using someone else's credentials who did not have Reporting Services it ran fine. When I tried to run it on someone else's machine who did not have Reporting Services using my own credentials, I got the same error. Also, when the person who's pc and credentials worked fine on his machine ran the same code back on my machine using his own credentials, he got the same error. When another person who also had Reporting Services tried to run it on his own pc, he got the error as well.
When the reader is first executed (MyDataReader = sSql.ExecuteReader) these were the property values:
depth = 0
fieldcount = 5
hasrows = true
isclosed = false
Item = In order to evaluate an indexed property, the property must be qualified and the arguments must be explicitly supplied by the user.
recordsaffected = -1 (even though there are records)
VisibleFieldCount = 5
When the reader is loaded into a table (MyTable.Load(MyDataReader)) then the property values changed to:
Depth = {"Invalid attempt to Depth when reader is closed."}
FieldCount = {"Invalid attempt to Depth when reader is closed."}
HasRows = {"Invalid attempt to Depth when reader is closed."}
IsClosed= True
Item = In order to evaluate an indexed property, the property must be qualified and the arguments must be explicitly supplied by the user.
RecordsAffect = -1
VisibleFieldCount = {"Invalid attempt to Depth when reader is closed."}
And when I execute the the following code:
dtReader = MyTable.CreateDataReader()
While (dtReader.Read())
I get this error:
"DataTableReader is Invalid for Current DataTable"
Since the code works with someone else's credentials on a machine that does not have SSRS, and the same problem happens for me regardless of what machine I am on as long as I am using my own credentials what could be causing my problem?
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Sep 25, 2006
I get the following error when generating a report. I use the "render" method in an asp.net page. I have also seen Timeout errors, which is the second error listed below.
Configuration
db-SQL Server 2000 on clustered windows 2003 server SP1, 5.5 GB RAM
SSRS 2005 and IIS 6.0 on 2nd windows 2003 server SP1, 3.75 GB RAM
generating SSRS Report using asp.net
Error is on large amounts of data, main source table has 11.2 Million records. The stored procedure returns
507,387 rows in approx. 25 minutes.
No problem with smaller amounts of data using the same source of 11.2 million records, but returning
much less.
Error 1: (from try/catch on render method)
System.Web.Services.Protocols.SoapException: An error has occurred during report processing. ---> An error has occurred during report processing. ---> An error has occurred during report processing. ---> The Group expression used in grouping €˜territory€™ references a data set field which contains an error: System.InvalidOperationException: Invalid attempt to MetaData when reader is closed. at System.Data.SqlClient.SqlDataReader.get_MetaData() at System.Data.SqlClient.SqlDataReader.GetValue(Int32 i) at Microsoft.ReportingServices.DataExtensions.DataReaderWrapper.GetValue(Int32 fieldIndex) at Microsoft.ReportingServices.DataExtensions.MappingDataReader.GetFieldValue(Int32 aliasIndex) at System.Web.Services.Protocols.SoapHttpClientProtocol.ReadResponse(SoapClientMessage message, WebResponse response, Stream responseStream, Boolean asyncCall) at System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters) at rptsvc.ReportingService.Render(String Report, String Format, String HistoryID, String DeviceInfo, ParameterValue[] Parameters, DataSourceCredentials[] Credentials, String ShowHideToggle, String& Encoding, String& MimeType, ParameterValue[]& ParametersUsed, Warning[]& Warnings, String[]& StreamIds) in c:WINDOWSMicrosoft.NETFrameworkv2.0.50727Temporary ASP.NET Filesswisherreports842e8e9d5ff5a831App_WebReferences.no0lpcgz.0.cs:line 1706 at ar_sum_aging.btnGenRpt_Click(Object sender, EventArgs e) in U:Visual Studio 2005ProjectsSwisherReportsar_sum_aging.aspx.vb:line 32
Error 2: (from ReportServer error log)
w3wp!processing!1!9/25/2006-18:32:53:: e ERROR: An exception has occurred in data source 'ar_sp'. Details: System.OutOfMemoryException: Exception of type 'System.OutOfMemoryException' was thrown.
at Microsoft.ReportingServices.ReportProcessing.ReportProcessing.RuntimeDataSetNode.GetNextDetailRow()
at Microsoft.ReportingServices.ReportProcessing.ReportProcessing.RuntimeReportDataSetNode.FirstPassGetNextDetailRow()
at Microsoft.ReportingServices.ReportProcessing.ReportProcessing.RuntimeDataSetNode.FirstPass()
at Microsoft.ReportingServices.ReportProcessing.ReportProcessing.RuntimeDataSetNode.FirstPassProcess(Boolean& closeConnWhenFinish)
at Microsoft.ReportingServices.ReportProcessing.ReportProcessing.RuntimeReportDataSetNode.Process()
at Microsoft.ReportingServices.ReportProcessing.ReportProcessing.RuntimeDataSetNode.ProcessConcurrent(Object threadSet)
w3wp!processing!1!9/25/2006-18:32:53:: i INFO: Merge abort handler called for ID=-1. Aborting data sources ...
w3wp!processing!1!9/25/2006-18:32:53:: e ERROR: Throwing Microsoft.ReportingServices.ReportProcessing.ProcessingAbortedException: An error has occurred during report processing., ;
Info: Microsoft.ReportingServices.ReportProcessing.ProcessingAbortedException: An error has occurred during report processing. ---> System.OutOfMemoryException: Exception of type 'System.OutOfMemoryException' was thrown.
at Microsoft.ReportingServices.ReportProcessing.ReportProcessing.RuntimeDataSetNode.GetNextDetailRow()
at Microsoft.ReportingServices.ReportProcessing.ReportProcessing.RuntimeReportDataSetNode.FirstPassGetNextDetailRow()
at Microsoft.ReportingServices.ReportProcessing.ReportProcessing.RuntimeDataSetNode.FirstPass()
at Microsoft.ReportingServices.ReportProcessing.ReportProcessing.RuntimeDataSetNode.FirstPassProcess(Boolean& closeConnWhenFinish)
at Microsoft.ReportingServices.ReportProcessing.ReportProcessing.RuntimeReportDataSetNode.Process()
at Microsoft.ReportingServices.ReportProcessing.ReportProcessing.RuntimeDataSetNode.ProcessConcurrent(Object threadSet)
--- End of inner exception stack trace ---
w3wp!processing!1!9/25/2006-18:32:53:: w WARN: Data source 'AR': Report processing has been aborted.
w3wp!processing!1!9/25/2006-18:32:53:: e ERROR: Throwing Microsoft.ReportingServices.ReportProcessing.ProcessingAbortedException: An error has occurred during report processing., ;
Info: Microsoft.ReportingServices.ReportProcessing.ProcessingAbortedException: An error has occurred during report processing. ---> System.OutOfMemoryException: Exception of type 'System.OutOfMemoryException' was thrown.
at Microsoft.ReportingServices.ReportProcessing.ReportProcessing.RuntimeDataSetNode.GetNextDetailRow()
at Microsoft.ReportingServices.ReportProcessing.ReportProcessing.RuntimeReportDataSetNode.FirstPassGetNextDetailRow()
at Microsoft.ReportingServices.ReportProcessing.ReportProcessing.RuntimeDataSetNode.FirstPass()
at Microsoft.ReportingServices.ReportProcessing.ReportProcessing.RuntimeDataSetNode.FirstPassProcess(Boolean& closeConnWhenFinish)
at Microsoft.ReportingServices.ReportProcessing.ReportProcessing.RuntimeReportDataSetNode.Process()
at Microsoft.ReportingServices.ReportProcessing.ReportProcessing.RuntimeDataSetNode.ProcessConcurrent(Object threadSet)
--- End of inner exception stack trace ---
w3wp!library!1!09/25/2006-18:32:58:: e ERROR: Found System.OutOfMemoryException exception: Microsoft.ReportingServices.Diagnostics.Utilities.RSException: An error has occurred during report processing. ---> Microsoft.ReportingServices.ReportProcessing.ProcessingAbortedException: An error has occurred during report processing. ---> System.OutOfMemoryException: Exception of type 'System.OutOfMemoryException' was thrown.
w3wp!library!1!09/25/2006-18:32:58:: e ERROR: Terminating worker process
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I'm getting an error and the user selected the "Program Name" right before they pressed the button that uses the DataReader. Do you see anything wrong? Here is my code:
OnClick1 this.txtCourseIDHidden.Text = cboChooseProgram.SelectedValue.ToString();
2 pnlAssignParticipants.Visible = true;
3
4 string strChosenCourse;
5 strChosenCourse = "select Program_Name from Programs WHERE Course_ID = @CourseID";
6
7 SqlDataReader drChosenCourse = null;
8
9 SqlConnection connChosenCourse = new SqlConnection(ConfigurationManager.ConnectionStrings["cs"].ConnectionString);
10
11 SqlCommand cmdChosenCourse = new SqlCommand(strChosenCourse, connChosenCourse);
12 cmdChosenCourse.Parameters.AddWithValue("@CourseID", this.txtCourseIDHidden.Text);
13 try
14 {
15 connChosenCourse.Open();
16 drChosenCourse = cmdChosenCourse.ExecuteReader();
17 if (drChosenCourse.HasRows)
18 {
19 this.lblChosenProgram.Text = "You have selected: " + drChosenCourse[0].ToString() + ".";
20 }
21 else
22 {
23 lblChosenProgram.Text = "Error";
24 }
25 }
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Nov 12, 2003
An application I developed normally works great, but it seems that when processing a certian record (and none of the others so far), SQL Server throws this error:
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setControls(orderReader)
...
Private Sub setControls(ByVal dr As SqlDataReader)
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The SqlDataReader (orderReader) doesn't blow up or anything until I call .Read() (and, as mentioned, this problem only occurs for one order). What could be happening here?
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Dec 18, 2006
(Sorry this was posted to VWD2005 Express by mistake)
I have created a simple project using ASP.NET 2.0 which enables a user to login. I created the login user using the Web Administration Tool in Visual Studio 2005.
I created everything locally and it worked.
Locally I have 2 databases. One containing normal data (which my site uses to populate a GridView control) and the other being ASPNETDB.MDF - which contains membership (login user) data. These 2 databases sit in the App_Data folder which is in the root of the project.
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Hi,
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Inside of stored procedure you have the code
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none varchar(10)
);
insert into #datatable
exec ('select *
from datatable
where id = 1')
select * from #datatable
I still want to retrieve the data and present it in the software's presentation layer but I still want to remove the temp table in order to reduce performance issue etc.
If I paste the code DROP
TABLE #datatable after
insert into #datatable
exec ('select *
from datatable
where id = 1')
Does it gonna work to present the data in the presentation layer after removing the temp table?
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[URL]
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Hi Everyone-
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--------------------------------------------------------------------------------
In Spend Dataload package: The system reports 54 percent memory load. There are 3747647488 bytes of physical memory with 1694883840 bytes free. There are 2147352576 bytes of virtual memory with 1061253120 bytes free. The paging file has 7328251904 bytes with 5083856896 bytes free.
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In Spend Dataload package: SSIS Error Code DTS_E_THREADFAILED. Thread "WorkThread0" has exited with error code 0xC0047039. There may be error messages posted before this with more information on why the thread has exited.
is there anyone know the solution of that problem and please dont tell me to use extra memery or a hardware solution as this option is not available.
thanx
Maylo
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Aug 7, 2015
I have an excel sheet containing one column (ID_NO) with 400K rows. I have a database from where I have to fetch some other columns from a Netezza database. Initially I tried hardcoding all the 400K rows in the query that I wrote using filter WHERE ID IN ('1212','2334'). But after pasting all the 400K rows the query is running indefinitely.
I have imported all the ID in a SQL table (MY_LIST table). I used a DFT, and selected ODBC source, and selected my netezza server. Then in the 'Data access mode' I selected the SQL command from the dropdown.I pasted the same query that I wrote in Netezza. Is there any way to pull only for those records that I have pulled in my SQL table (MY_LIST) ?
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Feb 15, 2008
I'm having problems designing a package to attempt to execute a fast load data transfer but failback to regular speed with error redirection in the event of an error.
The way I designed this was to add one data flow task to my package called "DFT FASTLOAD". The data flow copies a table SRC to another table DEST in the same SQL Server database. In the error handler for the data flow task I copied the original data flow task and changed the name to "DFT REGULARLOAD with Error redirection". In this data flow task I did not use fast load and addtionally redirected errors to a text file.
In the Data Flow Task "DFT FASTLOAD". I am copying from a varchar source field(with non-date strings) to a datetime destination field to force errors. However the Data Flow Task "DFT REGULARLOAD with Error redirection" never seems to start transferring data from source to destination. The data Flow Task "DFT REGULARLOAD with Error redirection" turns yellow (after the error occurs in "DFT FASTLOAD"), but no data is being transferred). It seems like it hangs.
Do I need to increase the MaximumError Count or something? The data flow task "DFT FASTLOAD" does not turn red when the error occurs it just remains yellow, so i assume I'm on the right track since it seems the error is caught.
I have added screenshots ... hopefully these screenshots will clarify my problem.
DESIGN:
http://i256.photobucket.com/albums/hh179/abzbank/DESIGN_FASTLOAD1.jpg
http://i256.photobucket.com/albums/hh179/abzbank/DESIGN_FASTLOAD2.jpg
http://i256.photobucket.com/albums/hh179/abzbank/DESIGN_FASTLOAD3.jpg
http://i256.photobucket.com/albums/hh179/abzbank/DESIGN_FASTLOAD4.jpg
http://i256.photobucket.com/albums/hh179/abzbank/DESIGN_FASTLOAD5.jpg
http://i256.photobucket.com/albums/hh179/abzbank/DESIGN_FASTLOAD6.jpg
RUNTIME:
http://i256.photobucket.com/albums/hh179/abzbank/RUN_FASTLOAD7.jpg
http://i256.photobucket.com/albums/hh179/abzbank/RUN_FASTLOAD8.jpg
http://i256.photobucket.com/albums/hh179/abzbank/RUN_FASTLOAD9.jpg
http://i256.photobucket.com/albums/hh179/abzbank/RUN_FASTLOAD10.jpg
http://i256.photobucket.com/albums/hh179/abzbank/RUN_FASTLOAD11.jpg
I can provide more details if needed... but really this is just a basic test.
Any assistance would be appreciated!
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Dec 4, 2014
I am trying to create and later read a data file from a package deployed in SSISDB, but it is not reading it while it is successfully creating the file. The same package when run from the file system package, runs successfully. Generating ispac and deploying in SSISDB is running for infinite time. Is it a permission issue?
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Apr 16, 2008
Hi all, i got this error:
[DTS.Pipeline] Error: "component "Excel Source" (1)" failed validation and returned validation status "VS_NEEDSNEWMETADATA".
and also this:
[Excel Source [1]] Warning: The external metadata column collection is out of synchronization with the data source columns. The column "Fiscal Week" needs to be updated in the external metadata column collection. The column "Fiscal Year" needs to be updated in the external metadata column collection. The column "1st level" needs to be added to the external metadata column collection. The column "2nd level" needs to be added to the external metadata column collection. The column "3rd level" needs to be added to the external metadata column collection. The "external metadata column "1st Level" (16745)" needs to be removed from the external metadata column collection. The "external metadata column "3rd Level" (16609)" needs to be removed from the external metadata column collection. The "external metadata column "2nd Level" (16272)" needs to be removed from the external metadata column collection.
I tried going data flow->excel connection->advanced editor for excel source-> input and output properties and tried to refresh the columns affected.
It seems that somehow the 3 columns are not read in from the source file?
ans alslo fiscal year, fiscal week is not set up up properly in my data destination?
anyone faced such errors before?
Thanks
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Feb 23, 2008
RE: XML Data source .. Expression? Variable? Connection? Error: unable to read the XML data.
I want my XML Data source to be an expression as i will be looping through a directory of xml files.
I don't see the expression property or the connection property??
I tried setting the XMLData property to @[User::filename], but that results in:
Information: 0x40043006 at Load XML Files, DTS.Pipeline: Prepare for Execute phase is beginning.
Error: 0xC02090D0 at Load XML Files, XML Source [108]: The component "XML Source" (108) was unable to read the XML data.
Error: 0xC0047019 at Load XML Files, DTS.Pipeline: component "XML Source" (108) failed the prepare phase and returned error code 0xC02090D0.
Information: 0x4004300B at Load XML Files, DTS.Pipeline: "component "OLE DB Destination" (341)" wrote 0 rows.
Task failed: Load XML Files
Information: 0xC002F30E at Bad, File System Task: File or directory "d:jcpxmlLoadjcp2.xml.bad" was deleted.
Warning: 0x80019002 at Package: The Execution method succeeded, but the number of errors raised (2) reached the maximum allowed (1); resulting in failure. This occurs when the number of errors reaches the number specified in MaximumErrorCount. Change the MaximumErrorCount or fix the errors.
SSIS package "Package.dtsx" finished: Failure.
The program '[3312] Package.dtsx: DTS' has exited with code 0 (0x0).
Thanks for any help or information.
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Apr 16, 2008
Hi all,
I have a column in SQL server which is of type ntext. Selecting the specific column to view it in report builder, an error message appears with the following description:
- Cannot run this report. The grouping expression 'nameofcolumn' returns the datatype binary. The Grouping Expression cannot return binary data.
Report Builder recognises this as if it was an image...
Thanks in advance!
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