Deleting tablespace file on NT

Hello All
Im am running a SQL+ script that drops a user and his tablespace, deletes the tablespacefile and then recreates the user and tablespace. This script is run from SQL80+.
The physical delete on the file fails. NT says sharing violation. After a couple of minuttes I can manually delete the file. What is the problem? Can i make ORACLE release the file immediatly? Or is NT just slow to release locks on this file? I know for sure no other user have data in or acces to the tablespace.

System: Personal Oracle 8.04, WindowsNT 4 build 1381.

Here is the script:

drop user myuser cascade;

alter tablespace mytb offline;

drop tablespace mytb
  including contents
   cascade constraints;

• this fails: host command /c del d:\orant\database\mytbfile.ora /p;

create tablespace infolog_data datafile 'd:\orant\database\'mytbfile.ORA'

Thanks
Peter Received on Thu Feb 04 1999 - 04:42:06 CST