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Home -> Community -> Mailing Lists -> Oracle-L -> Re: How can I get my DB back if I lost one of my rollback segment (rb
Hi
Recovery process will read from undo$ table to identify all the rollback segments that were online. Even if you comment out the rollback segments from the init file, still Oracle knows what rollback segments were online from the undo$ table. If i remember correctly, after reading the undo$ table, the process will read at least the rollback segment header and then only it proceed to open the database. If that rollback segment is not available, then you will not be able to open the database without using the underscore parameters.
IMHO, Oracle support need to be contacted for further resolution..
Thanks
Riyaj "Re-yas" Shamsudeen
Certified Oracle DBA
i2 technologies www.i2.com
"Rachel Carmichael" <carmichr_at_hotmail.com>
Sent by: root_at_fatcity.com
08/14/01 08:40 AM
Please respond to ORACLE-L
To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com> cc: Subject: Re: How can I get my DB back if I lost one of my rollback segment (rb
Hermanto,
some more information would be helpful -- why are you restoring? are you restoring from a cold or hot backup?
if it was from a cold backup, you can comment out the rollback_segments parameter in the init.ora and start the database. Then I would drop the rollback tablespace and recreate it, with the rollback segments you want. Then change the init.ora and shutdown and restart the database
Rachel
>From: Hermanto P <hermanto_p_at_aprilasia.com>
>Reply-To: ORACLE-L_at_fatcity.com
>To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>
>Subject: How can I get my DB back if I lost one of my rollback segment (rb
>Date: Tue, 14 Aug 2001 00:35:21 -0800
>
>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: Hermanto P
> INET: hermanto_p_at_aprilasia.com
>
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-- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Rachel Carmichael INET: carmichr_at_hotmail.com 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: ListGuru_at_fatcity.com (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).Received on Tue Aug 14 2001 - 10:19:56 CDT
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