Dataset Will not Fill on Application Server IIS 6.0

Question

Hello everyone,
I am having trouble getting my dataset to fill on the server. It works great from the desktop in VS, but stops when run on the server.
I have a package that accepts a parameter, adds a row, then returns a cursor. The whole thing works on the desktop, but stops on the server at the Fill datasource command (objDA.Fill(objDS)).
The code
Dim strConn As String = "User Id=******;Password=*******;Data Source=orcl_permit"
Dim objConn As New Oracle.DataAccess.Client.OracleConnection(strConn)
'Creating the OleDB Connection
objConn.Open()
'Creating the Command Type
Dim objCmd As New Oracle.DataAccess.Client.OracleCommand()
objCmd.CommandText = "LAST_ADDED_PERMIT.LAST_PERMIT"
objCmd.CommandType = Data.CommandType.StoredProcedure
objCmd.Connection = objConn
objCmd.Parameters.Add(New OracleParameter("result_cursor", Oracle.DataAccess.Client.OracleDbType.RefCursor)).Direction = Data.ParameterDirection.Output
objCmd.Parameters.Add(New OracleParameter("V_OPERATOR", Oracle.DataAccess.Client.OracleDbType.Varchar2)).Direction = Data.ParameterDirection.Input
objCmd.Parameters("V_OPERATOR").Value = username
'Creating the Data Adapter
Dim objDA As New Oracle.DataAccess.Client.OracleDataAdapter()
objDA.SelectCommand = objCmd
'Creating the DataSet
Dim objDS As New System.Data.DataSet
'Filling the DataSet using the Data Adapter
objDA.Fill(objDS)
Me.DetailsView1.DataSource = objDS.Tables(0)
'Set up the Grid
Me.DetailsView1.AutoGenerateRows = False 'Do not Automatically generate the columns
Dim strKeys() As String = {"APPLICATION_NO"} 'Columns to datakey to: {"APPLICATION_NO","PIN"} for more than one
DetailsView1.DataKeyNames = strKeys 'Set the datakey
'Create the columns
Dim R_Application As BoundField = New BoundField 'Create the first column
R_Application.DataField = "APPLICATION_NO" 'Name of the datesource field to bind to
R_Application.HeaderText = "Application No." 'Column header
Dim R_Type As BoundField = New BoundField
R_Type.DataField = "PERMITTYPE"
R_Type.HeaderText = "Type"
Dim R_WorkClass As BoundField = New BoundField
R_WorkClass.DataField = "PERMITWORKCLASS"
R_WorkClass.HeaderText = "Work Class"
Dim R_BuildingUse As BoundField = New BoundField
R_BuildingUse.DataField = "PERMITBUILDINGUSE"
R_BuildingUse.HeaderText = "Building Use"
Dim R_PIN As BoundField = New BoundField
R_PIN.DataField = "PIN"
R_PIN.HeaderText = "PIN"
Dim R_Owner As BoundField = New BoundField
R_Owner.DataField = "OWNERNAME"
R_Owner.HeaderText = "Owner"
Dim R_Qualifier As BoundField = New BoundField
R_Qualifier.DataField = "QUALPERSONALNAME"
R_Qualifier.HeaderText = "Qualifier"
Dim R_NOW As BoundField = New BoundField
R_NOW.DataField = "NATURE_OF_WORK"
R_NOW.HeaderText = "Nature of Work"
Dim R_ProDes As BoundField = New BoundField
R_ProDes.DataField = "PROJECT_DESC"
R_ProDes.HeaderText = "Project Description"
Dim R_ProID As BoundField = New BoundField
R_ProID.DataField = "PROJECT_ID"
R_ProID.HeaderText = "Project"
Dim R_Comment As BoundField = New BoundField
R_Comment.DataField = "PERMIT_COMMENT"
R_Comment.HeaderText = "Comment"
'Add the columns
Me.DetailsView1.Fields.Clear() 'Clear the gridview out
Me.DetailsView1.Fields.Add(R_Application) 'Add the column at runtime
Me.DetailsView1.Fields.Add(R_Type)
Me.DetailsView1.Fields.Add(R_WorkClass)
Me.DetailsView1.Fields.Add(R_BuildingUse)
Me.DetailsView1.Fields.Add(R_PIN) 'Add the column at runtime
Me.DetailsView1.Fields.Add(R_Owner)
Me.DetailsView1.Fields.Add(R_Qualifier)
Me.DetailsView1.Fields.Add(R_NOW)
Me.DetailsView1.Fields.Add(R_ProDes)
Me.DetailsView1.Fields.Add(R_ProID)
Me.DetailsView1.Fields.Add(R_Comment)
Me.DetailsView1.DataBind() 'Go baby go
objConn.Close()
objConn.Dispose()
'Direct them to the newly created permit
'Dim transUrl As String = "Permit.aspx?"
'transUrl = transUrl + "Permit=" + Me.DetailsView1.SelectedValue.ToString
'Response.Redirect(transUrl, True)
The error
Object reference not set to an instance of an object.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.
Source Error:
Line 27: Dim objDS As New System.Data.DataSet
Line 28: 'Filling the DataSet using the Data Adapter
Line 29: objDA.Fill(objDS, "result_cursor")Line 30:
Line 31: Me.DetailsView1.DataSource = objDS.Tables(0)
Thanks

Answer 1

Hello.
I have exactly the same problem, but with another database engine. Its looks like happens after a while...once start failing, fails always until the process is restarted.
If you found a solution o cause, please replay. The error is
The code:
DataSet ds = new DataSet();
adapter.Fill(ds); //it work fine, no exceptions
DataTable t = ds.Tables[0]; // --> Exception: "System.IndexOutOfRangeException", "Cannot find table 0."
Thanks in advance.