Getting problem in subdomain data access

Question

I have a website abc.com, and it has microsoft access database.

i have web.config file to the root directory

i created a subdomain test.abc.com,i have redirected test.abc.com to abc.com/test  and i have placed a seperate web.config file  in abc.com/test  folder but it it giving me the following error:

The Microsoft Jet database engine cannot open the file .  It is already opened exclusively by another user, or you need permission to view its data.

plz help me to sort it out