From JTESTA@longaberger.com Tue, 14 Aug 2001 10:02:39 -0700 From: "JOE TESTA" Date: Tue, 14 Aug 2001 10:02:39 -0700 Subject: Re: Re[2]: How can I get my DB back if I lost one of my Message-ID: MIME-Version: 1.0 Content-Type: text/plain Well there must be something to the statement, back in v7 days, i did a shtdown abort, when i had a lrage RBS online(and not in the init.ora file), well when i tried to bring the db backup, it refused until i put the rbs in the init.ora file and oracle could then do recovery, short of an instance crash or shutdown abort, i'm with you.     joe   >>> dgoulet@vicr.com 08/14/01 12:26PM >>>Riyaj,    Rollback segments are needed for recovery?  I think your confused with theonline redo logs.  When a DB shuts down the rollback segments are emptied outeither because the transactions have been rolled back or committed.  Once youstart the recovery process the rollback segments are no longer required as thedata therein is in the on-line redo logs.Dick Goulet____________________Reply Separator____________________Author: Riyaj_Shamsudeen@i2.comDate:       8/14/2001 6:41 AMHermanto        Rollback segment data files are *needed* for recovery. Rollback segments are the key component for consistent media/instance recovery. If you lose any of the rollback segment files and if any extents from that datafile are needed then the database can not do the recovery consistently and will give you errors. Is it the only data file associated with the rollback segment tablespace. If that is the case, there will be extents from the rollback segments. If there are no extents from the rollback segments then you could potentially offline drop the datafile, do the media recovery and do open resetlogs. What errors are you getting ? Stuck recovery ? Errors will tell you whether the recovery process is looking for rollback segments or the data file.        Please contact Oracle support if there are any rollback extents in this datafile. _offline_rollback_segments and _corrupted_rollback_segments parameters can be used to hard open the database. But DO expect data consistency errors. In fact, only thing you should do is open this way, extract the data out and import in to a new database. Contact Oracle Support before you do this since there are serious consequences of doing this.ThanksRiyaj "Re-yas" ShamsudeenCertified Oracle DBAi2 technologies   www.i2.comHermanto P Sent by: root@fatcity.com08/14/01 03:35 AMPlease respond to ORACLE-L        To:     Multiple recipients of list ORACLE-L         cc:         Subject:        How can I get my DB back if I lost one of my rollbacksegment (rbHi gurus,Recently, I have forgotten to backup one of rollback segment file(rbs02.dbf).When I want to restore..the db can not startup normally.Anyone can give me advise..Thanks in advance.Warm regards,Hermanto-- Please see the official ORACLE-L FAQ: http://www.orafaq.com-- Author: Hermanto P  INET: hermanto_p@aprilasia.comFat City Network Services    -- (858) 538-5051  FAX: (858) 538-5051San Diego, California        -- Public Internet access / Mailing Lists--------------------------------------------------------------------To REMOVE yourself from this mailing list, send an E-Mail messageto: ListGuru@fatcity.com (note EXACT spelling of 'ListGuru') and inthe message BODY, include a line containing: UNSUB ORACLE-L(or the name of mailing list you want to be removed from).  You mayalso send the HELP command for other information (like subscribing).
Hermanto
        Rollback segmentdata files are *needed* for recovery. Rollback segments are the key componentfor consistent media/instance recovery. If you lose any of the rollback segmentfiles and if any extents from that datafile are needed then the database can notdo the recovery consistently and will give you errors. Is it the only data fileassociated with the rollback segment tablespace. If that is the case, there willbe extents from the rollback segments. If there are no extents from the rollbacksegments then you could potentially offline drop the datafile, do the mediarecovery and do open resetlogs. What errors are you getting ? Stuck recovery ?Errors will tell you whether the recovery process is looking for rollbacksegments or the data file.
        Please contactOracle support if there are any rollback extents in this datafile._offline_rollback_segments and _corrupted_rollback_segments parameters can beused to hard open the database. But DO expect data consistency errors. In fact,only thing you should do is open this way, extract the data out and import in toa new database. Contact Oracle Support before you do this since there areserious consequences of doing this.

Thanks
Riyaj "Re-yas" Shamsudeen
Certified Oracle DBA
i2 technologies   www.i2.com


Hermanto P<hermanto_p@aprilasia.com>
Sent by: root@fatcity.com

08/14/01 03:35 AM
Please respond to ORACLE-L

       
        To:       Multiple recipients of list ORACLE-L<ORACLE-L@fatcity.com>
        cc:       
        Subject:       How can I get my DB back if I lost one of my rollbacksegment (rb



Hi gurus,
Recently, I have forgotten to backup one of rollback segment file
(rbs02.dbf).
When I want to restore..the db can not startup normally.
Anyone can give me advise..
Thanks in advance.

Warm regards,
Hermanto
--
Please see the official ORACLE-L FAQ: http://www.orafaq.com-- Author:   INET: dgoulet@vicr.comFat City Network Services    -- (858) 538-5051  FAX: (858) 538-5051San Diego, California        -- Public Internet access / Mailing Lists--------------------------------------------------------------------To REMOVE yourself from this mailing list, send an E-Mail messageto: ListGuru@fatcity.com (note EXACT spelling of 'ListGuru') and inthe message BODY, include a line containing: UNSUB ORACLE-L(or the name of mailing list you want to be removed from).  You mayalso send the HELP command for other information (like subscribing).