Sergey-
>Maybe you can pre-generate those numbers in advance, store in a table and use as needed?
As I tell David in my reply to him, I hadn't even considered going in this direction, so I appreciate the suggestion.
I don't have so many possible serial numbers that I can afford to through many away, but I can deal with recycling when the table is empty, in a sort of way that David suggests.
Thanks.
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