[单选] You work as a database administrator for Certkiller .com. The UNDO_RETENTION parameter in your database is set to 1000 and undoretention is not guaranteed. Which statement regarding retention of undo data is correct？（）

A . Undo data becomes obsolete after 1，000 seconds.
B . Undo data gets refreshed after 1，000 seconds.
C . Undo data will be stored permanently after 1，000 seconds.
D . Committed undo data would be retained for 1，000 seconds if free undo space is available.
E . Undo data will be retained in the UNDOtablespacefor 1，000 seconds， then it gets movedmovedto the TEMPORARYtablespaceto provide read consistency.

Your Certkiller .com database is in ARCHIVELOG mode. The data file that belongs to the SYSTEMtablespacehas become corrupted. Up to what point can you recover the database？（） Until last commit。 Until the time you perform recovery。 Until the time the date file got corrupted。 Until the point where the last transaction begun。 You cannot recover the SYSTEMtablespaceand must re-create the database.。城市化简述使用Command进行数据更新的步骤。 Which of the following phases assesses the current network infrastructure of a customer（） Prepare。 Plan。 Analyze。 Desig。五铢钱作为我国古代使用时间最长的货币（）。始于秦废于清末。始于秦始皇废于汉武帝。始于汉武帝废于唐高祖。始于汉武帝废于唐玄宗。 You work as a database administrator for Certkiller .com. The UNDO_RETENTION parameter in your database is set to 1000 and undoretention is not guaranteed. Which statement regarding retention of undo data is correct？（）

参考答案：

● 参考解析

本题暂无解析

当前位置：烟草专卖管理员题库＞烟草法律法规知识考试题库

[单选] You work as a database administrator for Certkiller .com. The UNDO_RETENTION parameter in your database is set to 1000 and undoretention is not guaranteed. Which statement regarding retention of undo data is correct？（）

相关题目: