Any other differences besides: 1) does not lock the table; 2) does a full table scan instead of full index scan; ?
-- --Original Message-- -- From: oracle-l-bounce@(protected) [mailto:oracle-l-bounce@(protected)]On Behalf Of Joseph Amalraj Sent: Tuesday, January 24, 2006 9:48 AM To: Bobak, Mark; joseph@(protected); ORACLE-L Subject: RE: ORA-01652 (See ORA-01652.ora-code.com): unable to extend temp segment
Thanks,
Had read the article, but I am interested as to why Oracle is doing a full table scan instead of full index scan for online index rebuilds.
"Bobak, Mark" <Mark.Bobak@(protected)> wrote:
Well, my name is not Tanel, but I'll jump in here and point you to MetaLink Doc ID 272762.1.
-Mark -- Mark J. Bobak Senior Oracle Architect ProQuest Information & Learning "There are 10 types of people in the world: Those who understand binary, and those who don't."
__ __
From: oracle-l-bounce@(protected) [mailto:oracle-l-bounce@(protected)] On Behalf Of Joseph Amalraj Sent: Tuesday, January 24, 2006 9:59 AM To: ORACLE-L Subject: Re: ORA-01652 (See ORA-01652.ora-code.com): unable to extend temp segment
Thanks Tanel,
Is there any reason why Oracle does full table scans for online rebuilds and not for offline.
Regards
Joseph Amalraj
Tanel P�der <tanel.poder.003@(protected)> wrote:
Online rebuilds don't use existing index for creating new. They do full table scan on the table.
However, in both cases, old index segment is kept until new one is ready to use and switch to it is done. Also the journal IOTs used for online rebuilds are stored in the target tablespace, so if you've got lots of transaction s going on while you are rebuilding the index onl ine, you need additional space in target tablespace.
Tanel.
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<META content="MSHTML 6.00.2900.2180" name=GENERATOR></HEAD> <BODY> <DIV><FONT face=Arial color=#0000ff size=2><SPAN class=468280220-25012006>Any other differences besides: 1) does not lock the table; 2) does a full table scan instead of full index scan; ?</SPAN></FONT></DIV> <BLOCKQUOTE> <DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma size=2>-- --Original Message-- --<BR><B>From:</B> oracle-l-bounce@(protected) [mailto:oracle-l-bounce@(protected)]<B>On Behalf Of </B>Joseph Amalraj<BR><B>Sent:</B> Tuesday, January 24, 2006 9:48 AM<BR><B>To:</B> Bobak, Mark; joseph@(protected); ORACLE-L<BR><B>Subject:</B> RE: ORA-01652 (See ORA-01652.ora-code.com): unable to extend temp segment<BR><BR></FONT></DIV> <DIV>Thanks, </DIV> <DIV> </DIV> <DIV>Had read the article, but I am interested as to <U>why</U> Oracle is doing a full table scan instead of full index scan for online index rebuilds.<BR><BR><B><I>"Bobak, Mark" <Mark.Bobak@(protected)></I></B> wrote:</DIV> <BLOCKQUOTE class=replbq style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid"> <META content="MSHTML 6.00.2900.2802" name=GENERATOR> <DIV dir=ltr align=left><SPAN class=640153815-24012006><FONT face=Arial color=#0000ff size=2>Well, my name is not Tanel, but I'll jump in here and point you to MetaLink Doc ID 272762.1.</FONT></SPAN></DIV> <DIV><FONT face=Arial color=#0000ff size=2></FONT> </DIV> <DIV><FONT face=Arial color=#0000ff size=2></FONT> </DIV> <DIV><SPAN class=640153815-24012006><FONT face=Arial color=#0000ff size=2>-Mark</FONT></SPAN></DIV><!-- Converted from text/rtf format --> <DIV><B><SPAN lang=en-us><FONT face="Century Gothic" size=2>--</FONT></SPAN></B> <BR><B><SPAN lang=en-us><FONT face="Century Gothic" size=2>Mark J. Bobak</FONT></SPAN></B> <BR><B><SPAN lang=en-us><FONT face="Century Gothic" size=2>Senior Oracle Architect</FONT></SPAN></B> <BR><B><SPAN lang=en-us><FONT face="Century Gothic" size=2>P</FONT><FONT face="Century Gothic" size=2>ro</FONT><FONT face="Century Gothic" color=#ff0000 size=2>Q</FONT><FONT face="Century Gothic" size=2>uest Information & Learning</FONT></SPAN></B> </DIV> <DIV><SPAN lang=en-us><FONT face="Californian FB">"There are 10 types of people in the world: Those who understand binary, and those who don't."</FONT></SPAN> </DIV> <DIV> </DIV><BR> <DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left> <HR tabIndex=-1> <FONT face=Tahoma size=2><B>From:</B> oracle-l-bounce@(protected) [mailto:oracle-l-bounce@(protected)] <B>On Behalf Of </B>Joseph Amalraj<BR><B>Sent:</B> Tuesday, January 24, 2006 9:59 AM<BR><B>To:</B> ORACLE-L<BR><B>Subject:</B> Re: ORA-01652 (See ORA-01652.ora-code.com): unable to extend temp segment<BR></FONT><BR></DIV> <DIV></DIV> <DIV>Thanks Tanel, </DIV> <DIV> </DIV> <DIV>Is there any reason why Oracle does full table scans for online rebuilds and not for offline.</DIV> <DIV> </DIV> <DIV>Regards</DIV> <DIV><FONT face=Arial color=#0000ff size=2></FONT> </DIV> <DIV>Joseph Amalraj<BR><BR><B><I>Tanel P�der <tanel.poder.003@(protected)></I></B> wrote:</DIV> <BLOCKQUOTE class=replbq style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid"> <META content="MSHTML 6.00.2900.2802" name=GENERATOR> <STYLE></STYLE>
<DIV><FONT face=Arial size=2>Online rebuilds don't use existing index for creating new. They do full table scan on the table.</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>However, in both cases, old index segment is kept until new one is ready to use and switch to it is done. Also the journal IOTs used for online rebuilds are stored in the target tablespace, so if you've got lots of transaction s going on while you are rebuilding the index onl ine, you need additional space in target tablespace.</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>Tanel.</FONT></DIV></BLOCKQUOTE></BLOCKQUOTE></BLOCKQUOTE> <BR> This e-mail is intended solely for the person or entity to which it is addressed and may contain confidential and/or privileged information. Any review, dissemination, copying, printing or other use of this e-mail by persons or entities other than the addressee is prohibited. If you have received this e -mail in error, please contact the sender immediately and delete the material. <BR> __ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ _____<BR> This email has been scanned for all viruses by the MessageLabs Email Security System. Any questions please call 972-721-8257 or email your request to tech _support@(protected)<BR> </BODY></HTML>
