图解Undo原理

图解Undo原理：包括事务表Transaction Table、Undo Chains、和事务槽Interested Transaction List(ITLS)。

 

Transaction Table, Undo Chains and Interested Transaction Lists (ITLs) Mechanism by which Oracle maintains row level locking, Consistent Reads & block cleanouts.

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Posted by on February 16, 2012 in oracle database, software

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