Try as hard as you may - you can not delete any Oracle data files on Windows (should have said - on Windows ONLY) while the database is up and running. Windows keeps them locked 'n safe from deletion attempts. However, take the tablespace offline and watch its individual data files become "fair game" for deletion attempts...
The story you've been told on how the problem came to be - simply ain't true. It takes more than a simple mistake (on Windows that is) to get to this point. FYI - it takes *deliberate* aim.
Branimir
P.S.
If there are no recent cold backups (or schema exports) - expect from partial to total data loss. If data loss is not acceptable - somebody should get "walking papers" over this.
-- --Original Message-- -- From: Onkar N Tiwary [mailto:onkarnath.tiwary@(protected)] Sent: Tuesday, September 20, 2005 7:55 AM To: oracle-l@(protected) Subject: Database recovery problem
hi all,
We have got one oracle 9i rel 2 on windows 2000 running in no-archive log mode. the problem is one of the dba of the other team has deleted some of the dbf files while the database was running and tablespace was online.
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<META content="MSHTML 6.00.2900.2722" name=GENERATOR></HEAD> <BODY> <DIV><FONT face="Courier New" color=#0000ff size=2><SPAN class=832324312-20092005>Try as hard as you may - you can not delete any Oracle data files on </SPAN></FONT></DIV> <DIV><FONT face="Courier New" color=#0000ff size=2><SPAN class=832324312-20092005>Windows (should have said - on Windows ONLY) </SPAN></FONT><FONT face="Courier New" color=#0000ff size=2><SPAN class=832324312-20092005>while the database is up </SPAN></FONT></DIV> <DIV><FONT face="Courier New" color=#0000ff size=2><SPAN class=832324312-20092005>and running. Windows keeps them locked </SPAN></FONT><FONT face="Courier New" color=#0000ff size=2><SPAN class=832324312-20092005>'n safe from deletion attempts. </SPAN></FONT></DIV> <DIV><FONT face="Courier New" color=#0000ff size=2><SPAN class=832324312-20092005>However, </SPAN></FONT><FONT face="Courier New" color=#0000ff size=2><SPAN class=832324312-20092005>take the tablespace offline </SPAN></FONT><FONT face="Courier New" color=#0000ff size=2><SPAN class=832324312-20092005>and watch its individual data </SPAN></FONT></DIV> <DIV><FONT face="Courier New" color=#0000ff size=2><SPAN class=832324312-20092005>files </SPAN></FONT><FONT face="Courier New" color=#0000ff size=2><SPAN class=832324312-20092005>become "fair </SPAN></FONT><FONT face="Courier New" color=#0000ff size=2><SPAN class=832324312-20092005>game" for deletion attempts...</SPAN></FONT></DIV> <DIV><FONT face="Courier New" color=#0000ff size=2><SPAN class=832324312-20092005> </SPAN></FONT></DIV> <DIV><FONT face="Courier New" color=#0000ff size=2><SPAN class=832324312-20092005>The story you've been told on how the problem came to be - simply </SPAN></FONT><FONT face="Courier New" color=#0000ff size=2> <SPAN class=832324312-20092005>ain't </SPAN></FONT></DIV> <DIV><FONT face="Courier New" color=#0000ff size=2><SPAN class=832324312-20092005>true. I</SPAN></FONT><FONT face="Courier New" color=#0000ff size=2><SPAN class=832324312-20092005>t takes more </SPAN></FONT><FONT face="Courier New" color=#0000ff size=2><SPAN class=832324312-20092005>than a simple mistake (on Windows that is) to get </SPAN></FONT></DIV> <DIV><FONT face="Courier New" color=#0000ff size=2><SPAN class=832324312-20092005>to </SPAN></FONT><FONT face="Courier New" color= #0000ff size=2><SPAN class=832324312-20092005>this </SPAN></FONT><FONT face="Courier New" color=#0000ff size=2><SPAN class=832324312-20092005>point. FYI - i</SPAN></FONT><FONT face="Courier New" color=#0000ff size=2><SPAN class=832324312-20092005>t takes *deliberate* aim. </SPAN></FONT></DIV> <DIV><FONT face="Courier New" color=#0000ff size=2><SPAN class=832324312-20092005></SPAN></FONT> </DIV> <DIV><FONT face="Courier New" color=#0000ff size=2><SPAN class=832324312-20092005></SPAN></FONT><FONT face="Courier New" color=#0000ff size=2><SPAN class=832324312-20092005>Branimir</SPAN></FONT></DIV> <DIV><FONT face="Courier New" color=#0000ff size=2><SPAN class=832324312-20092005></SPAN></FONT> </DIV> <DIV><FONT face="Courier New" color=#0000ff size=2><SPAN class=832324312-20092005>P.S.</SPAN></FONT></DIV> <DIV><FONT face="Courier New" color=#0000ff size=2><SPAN class=832324312-20092005></SPAN></FONT> </DIV> <DIV><FONT face="Courier New" color=#0000ff size=2><SPAN class=832324312-20092005>If there are no recent cold backups (or schema exports) - expect from</SPAN></FONT></DIV> <DIV><FONT face="Courier New" color=#0000ff size=2><SPAN class=832324312-20092005>partial </SPAN></FONT><FONT face="Courier New" color=#0000ff size=2><SPAN class=832324312-20092005>to total </SPAN></FONT><FONT face="Courier New" color=#0000ff size=2><SPAN class=832324312-20092005>data </SPAN></FONT><FONT face="Courier New" color=#0000ff size=2><SPAN class=832324312-20092005>loss. If data loss is not acceptable - somebody </SPAN></FONT></DIV> <DIV><FONT face="Courier New" color=#0000ff size=2><SPAN class=832324312-20092005></SPAN></FONT><FONT face="Courier New" color=#0000ff size=2><SPAN class=832324312-20092005>should get </SPAN></FONT><FONT face="Courier New" color=#0000ff size=2><SPAN class=832324312-20092005>"walking papers" over this.</SPAN></FONT><FONT face="Courier New" color=#0000ff size=2><SPAN class=832324312-20092005></SPAN></FONT></DIV> <DIV><FONT face="Courier New" color=#0000ff size=2><SPAN class=832324312-20092005></SPAN></FONT> </DIV> <DIV><FONT face="Courier New" color=#0000ff size=2><SPAN class=832324312-20092005></SPAN></FONT> </DIV> <BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px"> <DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma size=2>-- --Original Message-- --<BR><B>From:</B> Onkar N Tiwary [mailto:onkarnath.tiwary@(protected)]<BR><B>Sent:</B> Tuesday, September 20, 2005 7:55 AM<BR><B>To:</B> oracle-l@(protected)<BR><B>Subject:</B> Database recovery problem<BR><BR></FONT></DIV> <DIV>hi all,</DIV> <DIV> </DIV> <DIV>We have got one oracle 9i rel 2 on windows 2000 running in no-archive log mode. the problem is one of the dba of the other team has deleted some of the dbf files while the database was running and tablespace was online.</DIV></BLOCKQUOTE></BODY></HTML>
