>>>How do I check if a dbf is already open?
>>
>>Do you mean by the current user, or by other users? For the current user, see Used() and Aused() in help. For other users, try to open the dbf exclusive.
>
>Thanks

You're welcome.

Update: While Used() can tell you if a dbf is open or not, Select() can tell you in which work area it's open, 0 means that it's not open. Unless you use Alias, that is.