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  • OCP-1Z0-053-V12.02-578题

    578.Your ARCHIVELOG-mode database has lost three datafiles and shut down. One is assigned to the

    SYSTEM tablespace and two are assigned to the USERS tablespace. You can choose from the following

    steps to recover your database:

    Which is the correct order of these steps in this case?

    A. Restore the three database datafiles that were lost.

    B. Issue the Startup Mount command to mount the database.

    C. Issue the alter database open command.

    D. Issue the alter database open resetlogs command.

    E. Recover the database using the recover database command.

    F. Recover the datafiles with the recover datafile command.

    G. Take the datafiles offline.

    H. a, b, e, c

    I. b, e, d

    J. a, b, d, c

    K. b, g, c, f

    L. a, b, d, f

    Answer: A 

    答案解析:

    参考:http://blog.csdn.net/rlhua/article/details/12622415

    如果某个数据文件丢失或损坏,且该文件属于SYSTEM或UNDO表空间,请执行以下任务:
    1. 实例可能会也可能不会自动关闭。如果未自动关闭,请使用SHUTDOWN ABORT关闭实例。
    2. 装载数据库。
    3. 还原并恢复缺失的数据文件。
    4. 打开数据库。


    题中数据库已关闭,只需要mount数据库,然后还原和恢复,最后打开数据库即可。

    题中应B后A


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  • 原文地址:https://www.cnblogs.com/hzcya1995/p/13316635.html
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