>
>Craig,
>
>1. create empty form and add a table to its DE, set datasession to private.
>2. add a grid to this form and set this table as recordsource for this grid
>3. run multiple instances of those forms from command window
>4. note that you can edit freely data in all forms, without errors.
>
>For this reason I think that set exclusive off is not required.

What type of buffering are you using? Where are the tables located -- local drive or network?