When dropping a tablespace, we've had better success deleting the files by the delete 
command from CMD rather than using Windows Explorer.

Also, found that you need to wait a period of time before you can delete the file - eg 
try again in 30 secs & 5 mins time.
This is mentioned in a forum at 
http://metalink.oracle.com/metalink/plsql/ml2_documents.showDocument?p_database_id=FOR&p_id=279331.996.
>From the note below, you should exit your tool (eg SQLPLus) and then wait a bit.

Also see note 222033.1 
http://metalink.oracle.com/metalink/plsql/ml2_documents.showDocument?p_database_id=NOT&p_id=222033.1
 which says:
"fact: Oracle Server - Enterprise Edition 8.1.5
fact: MS Windows NT
symptom: Unable to delete datafile from OS after drop tablespace
symptom: Cannot delete %s: There has been a sharing violation
symptom: Error deleting OS file
cause: <Bug:480928>
"OPEN HANDLE TO OFFLINE DATAFILES"

Fixed in ver. 8.1.6 and higher.



fix:

After issuing a DROP TABLESPACE command the corresponding datafile is still 
locked on OS level and not possible to remove. 

Workaround:

Disconnect from the session and exit the tool (Server Manager or SQL*Plus) you 
were running the DROP TABLESPACE command from. Then wait for some time (minutes)
, and the datafile will be released by the OS and possible to delete.
"

To find out who has files open, you can use process explorer from www.sysinternals.com 
or tlist from the resource kit.

HTH,
Bruce Reardon

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-----Original Message-----
Sent: Wednesday, 26 November 2003 1:49 AM
To: Multiple recipients of list ORACLE-L


> In a way, it's better than Unix.  You can't delete Windows Oracle files
> while the database is open, but in Unix you can.

In a way, it's a real pain in the butt.

Try looking at log files that are held open by other apps
while they write to them.  No problem on unix, often impossible
on windows.

No, I'm not talking about Oracle.  NetBackup for instance, on
windows it is often impossible to read the logfiles for a 
backup in progress.

If you do happen to erroneously delete an open file on unix,
you can recover from it if you keep your wits about you 
and don't panic.

Jared

On Tue, 2003-11-25 at 05:24, Mercadante, Thomas F wrote:
> Luc,
> 
> The next time you bounce the database you will be able to delete the files.
> Windows keeps a lock on these files for some odd reason.
> 
> In a way, it's better than Unix.  You can't delete Windows Oracle files
> while the database is open, but in Unix you can.
> 
> Tom Mercadante
> Oracle Certified Professional
> 
> 
> -----Original Message-----
> Sent: Tuesday, November 25, 2003 8:09 AM
> To: Multiple recipients of list ORACLE-L
> 
> 
> Hi gurus,
> 
> Oracle 8.1.7.4 on Windows 2000
> Yesterday I wanted to move 2 datafiles (for the same tablespace) to another
> disk.
> 1- I placed my tablespace offline
> 2- I copied my 2 datafiles
> 3- I altered my controlfiles to reflect the new path
> 4- I brought my tablespace back online
> 5- I backuped up my controlfile to trace to make sure it using the new path
> 6- When I wanted to delete the 2 old datafiles, Windows gave me an "sharing
> violation" error.  
> 
> My question is Who using it?  
> 
> My controlfiles are changed, when I query DBA_DATA_FILES, i'm using the new
> path. ....  
> I don't want to bounce my production database ....
> 
> Any ideas
> 
> TIA
> Luc
> 
> ---------
> Luc Demanche
> AstraZeneca R&D Montreal
> Oracle Database Administrator
> 514.832.3200 x2356
> 
> 
> -- 
> Please see the official ORACLE-L FAQ: http://www.orafaq.net
> -- 
> Author: 
>   INET: [EMAIL PROTECTED]
-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.net
-- 
Author: Reardon, Bruce (CALBBAY)
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