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Home -> Community -> Mailing Lists -> Oracle-L -> Question About "Deferred Rollback Segments"
Hi, DBAs:
From Oracle Online Manual:
" When a tablespace goes offline so that transactions cannot be rolled back
immediately, Oracle writes to a deferred rollback segment. The deferred rollback
segment contains the rollback entries that could not be applied to the tablespace, so
that they can be applied when the tablespace comes back online. These segments
disappear as soon as the tablespace is brought back online and recovered. Oracle
automatically creates deferred rollback segments in the SYSTEM tablespace. "
How can I find out the "deferred rollback segments", which dictionary view needed to
be queried?
I execute a query, insert some datas into the table, and not commited it, then I
offline the tablespace with immediate option. Then I issued "rollback", it rolled back
immediate although the tablespace is offline. I know it has been rolled back with
"Diferred Rollback Segments", But where can I find it?
Thank you for your help.
WinterSun Zhao
-- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: WinterSun Zha INET: wintersun_zhao_at_21cn.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 Thu Oct 18 2001 - 01:14:32 CDT
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