Managing undo data
As so many of the statements executed against a database generate undo data, managing it is a crucial aspect of database administration. In the past, Oracle used resources called rollback segments to manage undo data. When a user connected to the database, they were assigned a rollback segment that would serve as storage for the undo data (called rollback data , back then) generated by that session. Unfortunately, these rollback segments were f...
- Managing undo data
- from OCA Oracle Database 11g: Database Administration I: A Real-World Certification Guide
- Publisher: Packt Publishing
- Released: February 2013
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