>One solution is, on a point where you use the table, check if you can do EXCLUSIVE. Something like:
>

>TRY
>  USE xyz EXCLUSIVE
>  PACK    &&or PACK MEMO
>  USE
> CATCH
>*just head on
>ENDTRY
>
>USE xyz
>

>
>On a "near constant use" from time to time it should pack.

And, also, on a sufficiently large table, the pack should take enough time for some user to try to hit it while it's being packed. A friendly message should follow.