>>I want to simulate two users access the same table on my PC, i.e. open the same table in two instances of VFP 7. Can this be done.
>
>Absolutely - as long as neither is opening the table exclusively.
>
>Alan

Thanks, I did the following

open database dbcname shared
use tablename in 0 shared

in both instances, then I check result of rlock(tablename), in second instance get .f. if on the same record, .t. if on different record (as expected).

Question does tableupdate work the same way?