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单选题
You are a Database Administrator with WonderWeb. You use a password file to establish connections to the Sales database located on the server. You created the password file using the following command:        ORAPWD file=d:/oracle/ora9i/orapwU01 password=admin entries=4   You erroneously deleted the password file while the database was running. You re-create the password file using the following command:   ORAPWD file=d:/oracle/ora9i/orapwU01 password=change_on_install entries=4   However, when you try to connect as the SYS user, you receive the following error:        ORA-01031: insufficient privileges   What should you do to resolve this error?()
A

 Delete the newly created password file and re-create another password file with the password admin, without shutting down the database.

B

 Enable the operating system authentication, shut down the database, disable the operating system authentication, and restart the database using the password file.

C

 Enable the operating system authentication, shut down the database, re-create the password file using the same ORAPWD command, and restart the database using the password file.

D

 Delete the newly created password file, enable operating system authentication and shut down the database. Then, re-create another password file using the same ORAPWD command and restart the database using this password file.


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单选题You work in a company which uses SQL Server 2008. You are the administrator of the company database. Now you are in charge of a SQL Server 2008 instance. There is a database named DB1 in the instance. When you are absent, a user will use a login named Mary to log in and maintain the database snapshots. The user has to delete the database snapshots for DB1, so you have to give the appropriate permissions to the user.  So which database permission should you give the user?()ADELETE BCONTROL CDROP DATABASE DALTER ANY DATASPACE

单选题You are a database administrator for your company. You are responsible for a SQL Server 2005 database that has several indexes. You need to write a stored procedure that checks the indexes for fragmentation. Which Transact-SQL statement should you use?()ADBCC DBREINDEXBSELECT * FROM sys.dm_db_index_physical_statsCDBCC INDEXDEFRAGDSELECT * FROM sys.indexes

单选题You are the Database Administrator for WonderWeb, which has recently acquired a media company TXGlobal. You have been assigned the task to migrate all the database applications of TXGlobal to the database server of WonderWeb. To accommodate more database applications, you need to add disks to the existing disk group. Whenever you add or remove disks from the disk group, Automatic Storage Management (ASM) rebalancing distributes the data evenly across all the disks of the disk group. Which background process performs this actual rebalancing activity, resulting in the movement of data extents in the disk groups?()A ASMBB ARBnC RBAL in the ASM instanceD RBAL in the database instance