单选题
AIt is the time period after which the undo data becomes obsolete.
BIt is the time period after which the committed undo data would be transferred to a temporarytablespace.
CIt is the minimum time period up to which the committed undo data would be retained if free undo spaceis available.
DIt is the time period after which the undo data is transferred to the Flash Recovery Area to provide readconsistency.
正确答案
答案解析
略
相似试题
Which statement is true？（）
单选题查看答案
Which two statements are true？（）
多选题查看答案
Which four statements are true？（）
多选题查看答案
Which statements are true about checkpointing（）
多选题查看答案
Which statements are true regarding listeners（）
多选题查看答案
Which statements are correct regarding indexes？ （）
多选题查看答案
Which command creates an image copy？（）
单选题查看答案
Which statement is true regarding subqueries?（）
单选题查看答案
Which statement is true regarding synonyms?（）
单选题查看答案
Which three operations require undo data（）
多选题查看答案