RE: question regarding automatic undo

From: Jeffrey Beckstrom <JBECKSTROM_at_gcrta.org>
Date: Tue, 21 Jun 2005 13:02:51 -0400
Message-Id: <s2b8100d.010@gcrta.org>

Am I correct in that possibly database 2 was very busy and decided it needed more segment so dynamically created them. Sometime thereafter, not needed so they were offlined????

>>> "Goulet, Dick" <DGoulet_at_vicr.com> 6/21/05 12:54:27 PM >>>
Yes. When you enable automatic undo management you leave all of that to the database engine.

From: oracle-l-bounce_at_freelists.org
[mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Jeffrey Beckstrom
Sent: Tuesday, June 21, 2005 12:41 PM
To: oracle-l_at_freelists.org; oracle-db-l_at_Groups.ITtoolbox.com; ORACLE-L_at_IC.SUNYSB.EDU; oracledba_at_LazyDBA.com; oracle-rdbms_at_yahoogroups.com
Subject: question regarding automatic undo

Two identical databases.

database 1 has 10 undo online and 2 offline database 2 has 10 undo online and 23 offline

Why does the second have more offline undo segments. Does Oracle automatically create them if needed and when no longer needed offline it??

Jeffrey Beckstrom
Database Administrator
Greater Cleveland Regional Transit Authority 1240 W. 6th Street
Cleveland, Ohio 44113

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Received on Tue Jun 21 2005 - 13:08:20 CDT