问题

You work as a 

You work as a database administrator for Certkiller .com. Your database is configured for automatic undo management. UNDO_RETENTION is set to 3 hours. You want to flash back a table that was created last year. How far back can the flashback query go？（）

A3 hours
B6 months
Cuntil last year
Duntil last commit
Euntil the point when the undotablespacewas refreshed
Funtil the database is shut down and the memory erased

参考答案

参考解析：

分类：1Z0-042题库

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