OnError in form: Error Unable to fetch row

Hello,
I'm trying to create such functionality, that in report "edit" link leads to form on another table. Everything is ok with rows, that exist in that table (i can edit them in form). But I want, that if row does not exist - the form should open the "Create record" window.
Now i get an error:
ORA-01403: no data found
Error Unable to fetch row.
Maybe some computation needs to be done for primary key?
Thanks.
Edited by: user11022609 on 2009.4.14 03.38

I requested for workspace in apex.oracle.com, but i solved the problem sooner. I created one more column ir report (using the unique column left join), which was the primary key of the other table and included it into EDIT link.
Edited by: user11022609 on 2009.4.14 06.12

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ORA-01403: no data found . Error Unable to fetch row

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SQL*Plus: Release 10.2.0.1.0 - Beta on Wed May 17 21:24:54 2006
Copyright (c) 1982, 2005, Oracle. All rights reserved.
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Error Unable to fetch authentication_scheme

I have imported a HTMLDB application into a new workspace.
When I try to run the application I get the error:
Error Unable to fetch authentication_scheme in application 100
I need to be able to use this application with other workspaces (the schemas are owned by different owners but are identical).
Please help ... Thank you, Rick
Here is the Debug information:
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0.02: ...Setting NLS Decimal separator="."
0.02: ...Setting NLS Group separator=","
0.02: ...Setting NLS date format="DD-MON-RR"
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I don't know what APEX is?
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The export file has been imported successfully. If you wish to use this file to install press Install:
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Logged Into Workspace: KODIESMB1
Export File WorkspaceID: 633628732993759
Export File Application: 114
Export File Version: 2004.07.04
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Parse As Schema - Select Schema - KODIESMB1
Build Status - No Build Option - Run Application Only Run and Build Application
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Auto Assign New Application ID
Change Application ID
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The application could not be installed because it already exists in different workspace. If you wish to install the application, please do the following:
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OR
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Application 101 installed
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Error Unable to fetch authentication_scheme in application 101.
OK
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Hi,
I got the following error while migrating one of my application from one workspace to another in the same APEX (2.2) instance but the schemas are different in both cases.
"Error Unable to fetch authentication_scheme in application 134."
Here are the more detailed information:
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6) getting this error:
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though application 'TestPrinter' doesn't has any authentication !!
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0.00: NLS: Language=en-gb
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OK
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Sumit

Sumit,
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tipan

Hi Tipan,
This error isn't due to you pressing save, it occurs when the page reloads because you are trying to fetch a record from a database table and the Primary Key APEX Page Item field doesn't have a value in it. You need to add a condition to your fetch so it only runs when the primary key page item has a value in it.
Hope this helps
Paul

Database, Dataset, Table Adaptors Error "Unable to load, Update requires a valid DeleteCommand when passed DataRow collection with deleted row"

Microsoft Visual Basic 2010 Express.
I am new to Visual Basic programing and i am trying to understand the relationships between Datasets, database, table Adaptors. I have to following code that is is giving me the following error" Unable to load, Update requires a valid DeleteCommand
when passed DataRow collection with deleted rows".
I can track the error and its located in "OffsetTableTableAdapter.Update(MaterionOffsetDataSet.OffsetTable)" code. What am i missing?
It seems that i can delete the data on the DataGridView Table and it only displays the correct data. but my database is not updating, even though the data grid displays differently.I can determine this because, when i save the offset database, i have all
the previous uploads and all the rows that i wanted to delete are still there.
My final goal is to be able to import offset data from a CSV file, save this data on the pc, send a copy of this data to a NuermicUpDown so the customer can modify certain numbers. From here they download all the date to a controller. IF the customer
needs to modify the imported data, they can go to a tab with a data grid view and modify the table. They will also have to option to save the modified data into a csv file.
Im not sure if i am making this overcomplicated or if there is a easier way to program this.
CODE:
Private Function LoadOffSetData()
        Dim LoadOffsetDialog As New OpenFileDialog 'create a new open file dialog and setup its parameters
        LoadOffsetDialog.DefaultExt = "csv"
        LoadOffsetDialog.Filter = "csv|*.csv"
        LoadOffsetDialog.Title = "Load Offset Data"
        LoadOffsetDialog.FileName = "RollCoaterOffset.csv"
        If LoadOffsetDialog.ShowDialog() = Windows.Forms.DialogResult.OK Then 'show the dialog and if the result is ok then
            Try
                Dim myStream As New System.IO.StreamReader(LoadOffsetDialog.OpenFile) 'try to open the file with a stream reader
                If (myStream IsNot Nothing) Then 'if the file is valid
                    For Each oldRow As MaterionOffsetDataSet.OffsetTableRow In MaterionOffsetDataSet.OffsetTable.Rows
                        oldRow.Delete()
'delete all of the existing rows
                    Next
                    'OffsetTableTableAdapter.Update(MaterionOffsetDataSet.OffsetTable)
                    Dim rowvalue As String
                    Dim cellvalue(25) As String
                    'Reading CSV file content
                    While myStream.Peek() <> -1
                        Dim NRow As MaterionOffsetDataSet.OffsetTableRow
                        rowvalue = myStream.ReadLine()
                        cellvalue = rowvalue.Split(","c) 'check what is ur separator
                        NRow = MaterionOffsetDataSet.OffsetTable.Rows.Add(cellvalue)
                        Me.OffsetTableTableAdapter.Update(NRow)
                    End While
                    Me.OffsetTableTableAdapter.Update(MaterionOffsetDataSet.OffsetTable)
                    MainOffset.Value = OffsetTableTableAdapter.MainOffsetValue          'saves all the table offsets
to the offset numericUpDown registers in the main window
                    StationOffset01.Value = OffsetTableTableAdapter.Station01Value
                    StationOffset02.Value = OffsetTableTableAdapter.Station02Value
                   myStream.Close() 'close the stream
                    Return True
                Else 'if we were not able to open the file then
                    MsgBox("Unable to load, check file name and location") 'let the operator know that the file wasn't able to open
                    Return False
                End If
            Catch ex As Exception
                MsgBox("Unable to load, " + ex.Message)
                Return False
            End Try
        Else
            Return False
        End If
    End Function

Hello SaulMTZ,
>>I can track the error and its located in "OffsetTableTableAdapter.Update(MaterionOffsetDataSet.OffsetTable)" code. What am i missing?
This error usually shows that you do not initialize the
DeleteCommand object, you could check this
article to see if you get a workaround.
>> Im not sure if i am making this overcomplicated or if there is a easier way to program this.
If you are working CSV file, you could use OleDB to read it which would treat the CSV file as a Table:
http://www.codeproject.com/Articles/27802/Using-OleDb-to-Import-Text-Files-tab-CSV-custom
which seems to be easier (in my opinion).
Regards.
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'SELECT_LIST_FROM_LOV' giving error if LOV fetches 47 rows

Hi All,
We are using 'SELECT_LIST_FROM_LOV' function to create dynamic items in a tabular form. It works fine when LOV fetches < = 47 rows but is giving 'buffer overflow error' if it fetches more!
Any help/suggestions would be appreciated.
APEX Version : 2.2.1
Regards,
Hari

Did you try it first? I know the issue and ran into the exact same one and this is how to change it. Calling that function just returns a string to Apex and the buffer is only so big for LOV's. If you need more than 47 rows in your case, you need the _XL function.
You are correct that it returns a CLOB, but its returning that to Apex, not to your process so to speak. It will handle it correctly in its internal API's.
Try it and if it doesn't work we can figure it out but give it a shot!

OnError in form: Error Unable to fetch row

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