Delete OS-files on NT

Hi

i have the following situation with oracle 7.3.4. on NT

i have 2 tablespaces each 5 Gig, i deleted those tablespaces because they are now on another server.
when i try to delete the OS files (3/tablespace) i get the message those files are in use.
Even when i shutdown the database, the message returns. The size of those datafiles are 2G+2G+1G. Any one with a suggestion what this problem is ?

g.g. kor Received on Mon Jun 05 2000 - 05:14:58 CDT