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Topic: Database Administration >> realtionship between rollback segment and undo tablespace

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 Title: realtionship between rollback segment and undo tablespace
 Neeraj  Posted: Apr 10, 2008 04:35:28 AM

 Total Post: 228
 Joined: Jan, 2007






 hi,
anyone can tell me wts the relation between rollback segment & undotablespace.

 ramesh
Posted: Apr 10, 2008 07:18:03 AM  

 Total Post: 69
 Joined: Dec, 2006






 
i think the roolback segments resides in undo tablespace

 Gitesh
Posted: Apr 10, 2008 07:58:22 AM  

 Total Post: 322
 Joined: May, 2005






 
Before Oracle9i rollback segment available now onwards it called undo segments. In Oracle 9i when we enable undo_management=AUTO that time Oracle create undo segments in undo tablespace. Working of rollback segment and undo segment is same. But when undo_management is auto that time oracle automatically manages like shrinking/creating new undo segment or offline present undo segment,extending undo segment etc.



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