1Z0-053 争议题目解析486

1Z0-053 争议题目解析486

考试科目：1Z0-053
题库版本：V13.02

题库中原题为：

486.You execute the following Recovery Manager (RMAN) commands in (he following order: BACKUP
VALIDATE DATABAE
RECOVER CORRUPTION LIST;
Which (two tasks are performed by these commands? (Choose two.)
A. Repair the corrupted blocks. If any. In the backup created.
B. Populate VSCOPV_CORRUPTION with names of files that have corrupted blocks
C. Back up the database after checking whether array of the files have corrupted blocks.
D. Discover any corrupt blocks that are viewable with the V$DATABASE_BLOCK_CORBUPTION view.
E. Repair all corrupted blocks that have been logged in the V$DATABASE_BLOCK_ CORRUPTION
Answer: BC

争议点：
网上有人说选择DE，比如“标记为正确答案，不看answer版”题库。

比如：
Riveore的解析：http://blog.csdn.net/rlhua/article/details/20452501

LuiseDalian的解析：http://blog.itpub.net/17013648/viewspace-1305127/

(backup validate check logical database;这个命令不会真正的产生数据库的备份，只是检查数据库的数据块，并把它记录到V$DATABASE_BIOCK_CORBUPTION当中；
RECOVER CORRUPTION LIST;就是修复记录在V$DATABASE_BIOCK_CORBUPTION视图中的数据块

初步结论：
选择DE。