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Understanding Oracle Database Undo and Redo

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Oracle's Undo and Redo architecture supports crash recovery and the database "ACID" test, i.e. transaction atomicity, consistency, isolation and durability. Understanding this architecture and how it works is essential knowledge for all DBA's. This tutorial requires a background in Oracle SQL and helpful is an understanding of Oracle system and dynamic views, e.g. v$bh. Presented by SkillBuilders' Oracle Certified Master DBA John Watson.
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