>>
>>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?

Craig, there is no buffering and tables are on the c: drive.