78.You are managing an Oracle Database 11g database. The database is open, and you plan to perform R
2016-07-26 23:17
609 查看
78.You are managing an Oracle Database 11g database. The database is open, and you plan to perform
Recovery Manager (RMAN) backups. Which three statements are true about these backups? (Choose
three.)
A.The backups would be consistent.
B.The backups would be inconsistent.
C.The backups would be possible only if the database is running in ARCHIVELOG mode.
D.The backups would be possible only if the database is running in NOARCHIVELOG mode.
E.The backups need to be restored and the database has to be recovered in case of a media failure.
答案：BCE
解析：只要是open状态进行备份的都是不一致备份排除A
rman在非归档模式下执行进行脱机备份也就是冷备，因此排除D
E说的是介质有问题了，备份必须restore然后recovered，这里说一下restore和recover的区别
restore：从备份位置还原一个或者多个数据库文件
recover:应用归档和联机重做日志文件，将整个数据库或单独数据库文件前滚到指定的scn
这就是归档文件的作用，当执行备份的时候，只是备份到一个点的数据，但是在备份之后这段时间执行的数据，就需要
通过recover利用归档日志，来进行前滚实现，因此需要这两步
Recovery Manager (RMAN) backups. Which three statements are true about these backups? (Choose
three.)
A.The backups would be consistent.
B.The backups would be inconsistent.
C.The backups would be possible only if the database is running in ARCHIVELOG mode.
D.The backups would be possible only if the database is running in NOARCHIVELOG mode.
E.The backups need to be restored and the database has to be recovered in case of a media failure.
答案：BCE
解析：只要是open状态进行备份的都是不一致备份排除A
rman在非归档模式下执行进行脱机备份也就是冷备，因此排除D
E说的是介质有问题了，备份必须restore然后recovered，这里说一下restore和recover的区别
restore：从备份位置还原一个或者多个数据库文件
recover:应用归档和联机重做日志文件，将整个数据库或单独数据库文件前滚到指定的scn
这就是归档文件的作用，当执行备份的时候，只是备份到一个点的数据，但是在备份之后这段时间执行的数据，就需要
通过recover利用归档日志，来进行前滚实现，因此需要这两步
内容来自用户分享和网络整理，不保证内容的准确性，如有侵权内容，可联系管理员处理 
相关文章推荐
- 2.Which two statements are true about the Automatic Workload Repository (AWR)
- 3.While observing the index statistics, you find that an index is highly fragmented, thereby resulti
- 4.Your test database is running in NOARCHIVELOG mode. Which statement is true regarding the type of
- 5.The database instance is currently using SPFILE. View the Exhibit and examine the error that you
- 6.Note the following points describing various utilities in Oracle Database 11g:
- 7.You have issued a SHUTDOWN ABORT command to bring down your database instance. Considerthe steps t
- 8.Observe the information in the columns:
- 9.View the Exhibit and examine the privileges granted to the SL_REP user.
- 10.Examine the following statement that is used to modify the constraint on the SALES table:
- 11.Identify the memory component from which memory may be allocated for:
- 12.Which is the correct description of a pinned buffer in the database buffer cache?
- 13.You have executed this command to change the size of the database buffer cache:
- 14.These are points that describe the contents of different memory components:
- 15.Which two statements are true about Shared SQL Area and Private SQL Area? (Choose two.)
- 16.Note the following functionalities of various background processes:
- 17.Note the functionalities of various background processes:
- 18.View the Exhibit and identify the component marked with a question mark.
- 19.Which two statements about the background process of the database writer are true? (Choose two.)
- 20.You have set Tablespace Full Metrics Threshold values for the USERS tablespace as follows:
- 21.Which three statements are true about logical structures of the Oracle database? (Choose three.)