试题详情
- 单项选择题What does the DB_FLASHBACK_RETENTION_TARGET parameter configure?()
A、 An upper limit on how far you can flash back the database,depending on the information in the redo logs
B、 An upper limit on how far you can flash back the database,depending on the information in the undo tablespace
C、 The amount of time for which the flashback data is to be kept in the flash recovery area, provided that there is enough space
D、 The amount of time for which the flashback data is guaranteed to be kept in the undo tablespace,provided that there is enough space
- C
关注下方微信公众号,在线模考后查看
热门试题
- Which two tasks can
- You need
- You work
- You are u
- Examine the&en
- The HR us
- 假设用户正在执行UPDATE操作,此时用
- Given: Which t
- Your test&ensp
- 如果要查询数据库中所有表的信息,应当使用
- 在CREATE DATABASE语句中,
- 下列哪个进程用于将修改过的数据从内存保存
- Given: Whichexcepti
- What is
- Which DBMS_SCH
- 下列哪一个操作可以用来为一个备份操作手动
- The database&e
- The CUSTOMERS table
- Examine the followi
- 在Oracle中,()数据字典表可以用来