Inset/update Oracle database

I got error "Multiple-step OLE DB operation generated errors." when using the following asp to insert/update the table.
If Request("num") = "" Then
      blnNew = True
     rsItems.Filter = "shop = " & Request("num")

   End If
    rsItems("shop") = Request.Form("shop")
    rsItems("phone") = Request.Form("phone")    
    Set rsItems = Nothing
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George K.Commented:
Have you checked that you use the appropriate  datatypes?
Also check in case you have null values.

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I agree with georgekl

This error occurs when values doesnt match with datatypes or it could be NULL

Check this link
mrongAuthor Commented:
Below is what I have before my IF stmt and I can't see anything wrong.

Dim rsItems
  Dim blnNew
  Set rsItems = Server.CreateObject("ADODB.Recordset")
  rsItems.Open "tbl1", objConn, adOpenForwardOnly, adLockOptimistic, adCmdTable
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