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Workaround for @DBLookup error: 'The specified database lookup generated more than 65,000 bytes of r

It's common to receive this error message when performing an @DBLookup: "The specified database look-up generated more than 65,000 bytes of results, which is too large for Lotus Notes to handle in this context." SearchDomino.com member Vinay Betala explains how to use a "prompt method" with a multi-value selection option to work around this problem.

Related information from SearchDomino.com:
Using AJAX as a replacement for @DBLookups

View column exceeds 32 KB errors from @DBLookup formulas

Error with @DBLookUp command: 'Entry not found in index'

Use an agent to refresh all @DBLookup/computed values

LotusScript advice

LotusScript Reference Center

It's common to receive this error message when performing an @DBLookup: "The specified database look-up generated more than 65,000 bytes of results, which is too large for Lotus Notes to handle in this context."

To overcome this, we can make use of "prompt method" -- with a multi-value selection option.

  1. Create one button.

  2. Create two fields -- category and doc_Readers, with the "computed" and "allow multiple values" options selected.

  3. Under category field, select/enter the keyword option -- keyword document will be available.

  4. When clicking the button in the second field, values will be populated based on the option selected in the first field.

Here is the code:

Sub Click(Source As Button)
Dim doc As notesdocument
Dim db As NotesDatabase
Dim temp As String
Dim newdoc As notesdocument
Dim newview As notesview

Set session = New NotesSession
Set db = session.CurrentDatabase
Set ws = New NotesUIWorkspace
Set uidoc = ws.CurrentDocument
temp=uidoc.fieldgettext("Category") 
Set doc = uidoc.document
Set newview = db.getview("Enter View Name")
Set newdoc = newview.getdocumentbykey(temp, True)

If uidoc.IsNewDoc Then 
returnvalue = ws.Prompt(PROMPT_OKCANCELLISTMULT, 
"Search Customer Codes", "Please select",
"" , newdoc.Doc_Readers) 
doc.Doc_Readers = returnvalue
Else
returnvalue = ws.Prompt(PROMPT_OKCANCELLISTMULT, 
"Search Customer Codes", "Please select",
"" , newdoc.Doc_Readers)   
Set item = doc.getfirstitem("Doc_Readers")
Call item.appendtotextlist(returnvalue)
Call uidoc.Refresh
End If   
End Sub

Do you have comments on this tip? Let us know.

This tip was submitted to the SearchDomino.com tip library by member Vinay Betala. Please let others know how useful it is via the rating scale below. Do you have a useful Lotus Notes, Domino, Workplace or WebSphere tip or code snippet to share? Submit it to our monthly tip contest and you could win a prize.

This was last published in November 2006

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