you aren't wrong :)
--- "Freeman, Robert " <[EMAIL PROTECTED]> wrote: > Actually the rollback segment header in the first extent exists in a > single > block, the rest of the first extent, as I understand it, is available > for > undo. Thus making INITIAL and NEXT the same should be of no > consequence in > this regard. > > It is my understanding (and I'm sure I will be corrected if I'm > wrong) the > reason for a requirement of 2 extents is to allow the tail/wrap > architecture > that Oracle uses for rollback segments. > > RF > > Robert G. Freeman - Oracle8i OCP > Oracle DBA Technical Lead > CSX Midtier Database Administration > > The Cigarette Smoking Man: Anyone who can appease a man's conscience > can > take his freedom away from him. > > > > -----Original Message----- > Sent: Friday, March 15, 2002 12:54 PM > To: Multiple recipients of list ORACLE-L > > > Oracle recommends the size NEXT=INITIAL. > So if I had 10M initial, then most of the initial beyond the > header info will be wasted? Sure not! > > Kumanan > > > -----Original Message----- > > From: Rachel Carmichael [SMTP:[EMAIL PROTECTED]] > > Sent: 11 March 2002 21:48 > > To: Multiple recipients of list ORACLE-L > > Subject: RE: A rollback segment question on minextents > > > > the first extent is used by oracle as the segment header to manage > the > > transaction information within the rollback segment. The second > extent > > contains the actual change vectors > > > > > > --- [EMAIL PROTECTED] wrote: > > > Hi, > > > > > > My point was that it could allocate one more extent as per need. > Why > > > the > > > need to minextents = 2? > > > > > > Thanks > > > Kumanan > > > > > > > -----Original Message----- > > > > From: Stephane Faroult [SMTP:[EMAIL PROTECTED]] > > > > Sent: 07 March 2002 20:54 > > > > To: Multiple recipients of list ORACLE-L > > > > Subject: Re: A rollback segment question on minextents > > > > > > > > [EMAIL PROTECTED] wrote: > > > > > > > > > > Hi, > > > > > > > > > > I was wondering why Oracle force minextents for rollback > > > > > segments to be two. Why can't we have minextents zero or > > > > > no minextents clause at all. > > > > > > > > > > We can surely set initial extent to be large enough ourselves > > > > > and next extent sized accordingly. > > > > > > > > > > Can someone enlighten me on the reason/thought behind this? > > > > > > > > > > Many thanks > > > > > > > > > > Kumanan Balasundaram > > > > > Database Administrator, IT > > > > > QXL ricardo plc > > > > > www.qxl.com > > > > > P: +44 (0)208 962 7409 > > > > > > > > Oracle doesn't reuse an extent which contains active > transactions. > > > What > > > > do you think would happen when you reach the end of your > initial > > > extent > > > > ? Exactly. > > > > -- > > > > Regards, > > > > > > > > Stephane Faroult > > > > Oriole Ltd > > > > -- > > > > Please see the official ORACLE-L FAQ: http://www.orafaq.com > > > > -- > > > > Author: Stephane Faroult > > > > INET: [EMAIL PROTECTED] > > > > > > > > Fat City Network Services -- (858) 538-5051 FAX: (858) > 538-5051 > > > > San Diego, California -- Public Internet access / > Mailing > > > Lists > > > > > > > > -------------------------------------------------------------------- > > > > To REMOVE yourself from this mailing list, send an E-Mail > message > > > > to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') > and in > > > > the message BODY, include a line containing: UNSUB ORACLE-L > > > > (or the name of mailing list you want to be removed from). You > may > > > > also send the HELP command for other information (like > > > subscribing). > > > -- > > > Please see the official ORACLE-L FAQ: http://www.orafaq.com > > > -- > > > Author: > > > INET: [EMAIL PROTECTED] > > > > > > Fat City Network Services -- (858) 538-5051 FAX: (858) > 538-5051 > > > San Diego, California -- Public Internet access / Mailing > > > Lists > > > > -------------------------------------------------------------------- > > > To REMOVE yourself from this mailing list, send an E-Mail message > > > to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and > in > > > the message BODY, include a line containing: UNSUB ORACLE-L > > > (or the name of mailing list you want to be removed from). You > may > > > also send the HELP command for other information (like > subscribing). > > > > > > __________________________________________________ > > Do You Yahoo!? > > Try FREE Yahoo! Mail - the world's greatest free email! > > http://mail.yahoo.com/ > > -- > > Please see the official ORACLE-L FAQ: http://www.orafaq.com > > -- > > Author: Rachel Carmichael > > INET: [EMAIL PROTECTED] > > > > Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 > > San Diego, California -- Public Internet access / Mailing > Lists > > > -------------------------------------------------------------------- > > To REMOVE yourself from this mailing list, send an E-Mail message > > to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in > > the message BODY, include a line containing: UNSUB ORACLE-L > > (or the name of mailing list you want to be removed from). You may > > also send the HELP command for other information (like > subscribing). > -- > Please see the official ORACLE-L FAQ: http://www.orafaq.com > -- > Author: > INET: [EMAIL PROTECTED] > > Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 > San Diego, California -- Public Internet access / Mailing > Lists > -------------------------------------------------------------------- > To REMOVE yourself from this mailing list, send an E-Mail message > to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in > the message BODY, include a line containing: UNSUB ORACLE-L > (or the name of mailing list you want to be removed from). You may > also send the HELP command for other information (like subscribing). > -- > Please see the official ORACLE-L FAQ: http://www.orafaq.com > -- > Author: Freeman, Robert > INET: [EMAIL PROTECTED] > > Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 > San Diego, California -- Public Internet access / Mailing > Lists > -------------------------------------------------------------------- > To REMOVE yourself from this mailing list, send an E-Mail message > to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in > the message BODY, include a line containing: UNSUB ORACLE-L > (or the name of mailing list you want to be removed from). You may > also send the HELP command for other information (like subscribing). __________________________________________________ Do You Yahoo!? Yahoo! Sports - live college hoops coverage http://sports.yahoo.com/ -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Rachel Carmichael INET: [EMAIL PROTECTED] Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
