>My problem is that the aplication is used all the time.
>
>can i back up all my data even if the database or tables are open.
>
>is this posible.
>
>Please givme any other sugestions to do the backup

About the best you can do is with SQL:

local lnRetVal, lnI, laTables[1]
lnRetVal = adbobjects(laTables, 'TABLE')
for each lcTable in laTables
    select * from (lcTable) into table "c:\backup\" + lcTable + ".dbf"
endfor