HI Raj, I hope you feel better :-).
John [EMAIL PROTECTED] wrote: >John, > >I DISAGREE. The gymnastics of assigning a large rollback segment to an >export could avoid the snapshot too old error. > >I agree with Jeremy when he says export does not generate rollback. But I >was trying to impress upon him that still an export could end up with the >snapshot too old message, particularly if there are plenty of active DML >transactions happening while the export is in progress, or if the export >uses the consistent parameter, or the rollback segments are not properly >sized. > >To stress my point further, Note:22836.1 on Metalink. I rest my case ;-) > >Raj > > > > > >orantdba <[EMAIL PROTECTED]>@fatcity.com on 01/25/2002 08:20:25 AM > >Please respond to [EMAIL PROTECTED] > > > >Sent by: [EMAIL PROTECTED] > > >To: Multiple recipients of list ORACLE-L <[EMAIL PROTECTED]> >cc: > > >Hi Raj, > >Interesting that you first agree with Jeremy and then argue with him. It >is precisely because >export does not generate rollback that the "gymnastics" of taking all of >the other rbs's offline >will not help anything. It might make you feel better, however :-). > >John > >[EMAIL PROTECTED] wrote: > > > > >Export doesn't generate any rollback, right, so what is it supposed to >accomplish by doing this incantation? > > > > > >Sorry to press the point, but could you elaborate on how that "COULD" >possibly make any difference for 'snapshot too old'? > > > >For the same reason, any other transaction could end up with a snapshot too >old error. Export does not generate any rollback, but there could be users >performing DML operations on the table that is being exported, and the >export needs to be redirected to read from the rollback segments. The >likelihood of the error being thrown up especially if one uses the >consistent parameter could be very high, if you dont have a large enough >rollback segment without an optimal clause. > >Raj > > > > > >Jeremiah Wilton <[EMAIL PROTECTED]>@fatcity.com on 01/23/2002 11:20:40 >AM > >Please respond to [EMAIL PROTECTED] > > > >Sent by: [EMAIL PROTECTED] > > >To: Multiple recipien >ts of list ORACLE-L <[EMAIL PROTECTED]> >cc: > > >On Tue, 22 Jan 2002, [EMAIL PROTECTED] wrote: > > > >Hmmmm ... "COULD" help in avoiding snapshot too old errors. > > > >Sorry to press the point, but could you elaborate on how that "COULD" >possibly make any difference for 'snapshot too old'? > >-- >Jeremiah Wilton >http://www.speakeasy.net/~jwilton > > > >Jeremiah Wilton <[EMAIL PROTECTED]> wrote: > >So what does it accomplish to "assign export [to] a particular >rollback segment?" > >Export doesn't generate any rollback, right, so what is it supposed to >accomplish by doing this incantation? > >On Tue, 22 Jan 2002, Jason Rowski wrote: > > > >... you can use the following trick to assign export a >particular rollback segment - > >1) Create a rollback segment tablespace with one large >segment and bring it online before export. >2) Offline all existing rollback segments. >3) Export the database >4) Offline the large tablespace created earlier. >5) Bring back the orginals rollback segments online. > > >--- Seema Singh <[EMAIL PROTECTED]> wrote: > > >Can I use one rollback segment at time of export?Is >yes,then >SET TRANSACTION USE ROLLBACK SEGMENT >rollbacksegmentname; > > > >-- >Please see the official ORACLE-L FAQ: http://www.orafaq.com >-- >Author: Jeremiah Wilton >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: orantdba 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).
