Should be possible with version 11g Release 1 or later.
http://download.oracle.com/docs/cd/B28359_01/win.111/b32010/vss.htm#NTQRF280
http://seer.entsupport.symantec.com/docs/298125.htm
Otherwise, you will have to use a pre-imaging script to stop the database services and then either a post-snap or post-imaging script to restart the services.
http://seer.entsupport.symantec.com/docs/293563.htm