（单选题）
Which statement is true about the UNDO_RETENTION parameter when retention guarantee is not enabled（）
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 temporary tablespace.
CIt is the minimum time period up to which the committed undo data would be retained if free undo space isavailable.
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
（单选题）
Which statement is true？（）
（多选题）
Which two statements are true？（）
（多选题）
Which four statements are true？（）
（多选题）
Which statements are true about checkpointing（）
（多选题）
Which statements are true regarding listeners（）
（多选题）
Which statements are correct regarding indexes？ （）
（单选题）
Which command creates an image copy？（）
（单选题）
Which statement is true regarding subqueries?（）
（单选题）
Which statement is true regarding synonyms?（）
（多选题）
Which three operations require undo data（）
