See User Global Area (UGA).
A tool within the Oracle advisory framework that uses past undo usage to recommend settings for the UNDO_RETENTION parameter as well as an optimal size for the undo tablespace.
The data blocks changed or updated, along with pointers to rows inserted that are stored in an undo tablespace to support read consistency, rolling back, and recovery from failed transactions or an instance crash. Also referred to as rollback information.
The segment that stores the before image of modified data; used for rollback or transaction recovery purposes.
A special type of tablespace that holds undo data. Only one undo tablespace can be active in the database at any ...