You company has four DBAs. You need to know which DBA added a column to the JOB_HISTORY table. The database cannot be offline during work hours. Which LogMiner command can you use to find out which user made the table change？（）

单项选择题You created a database by using the Database Configuration Assistant. What must you do to access a user account in the sample schemas？（）

A.A
B.B
C.C
D.D

多项选择题The multithreaded agent architecture for heterogeneous services is similar to the Oracle multithreaded server architecture. The principal difference is that it used threads instead of processes.  What are thee kinds of threads that it uses？（）

A.TCP
B.Task
C.Monitor
D.Dispatcher
E.Shared Server
F.Shutdown address

单项选择题Your database is running in NOARCHIVELOG mode. Every night there is a backup taken using RMAN. During your startup this morning you received en error regarding DISK 3 on your server. This is the location of your data file for the SYSTEM tablespace. Which option is open to you？（）

A.A
B.B
C.C
D.D

多项选择题ForwhichtwotaskswoulditbebestNOTtousetheutilitySQL*Loader？（）

A.When loading selected rows into each table.
B.When loading data from an export dump file.
C.When loading data from disk， tape， or named pipes.
D.When your data is NOT being inserted from a flat file.
E.When using a record management system to access data files.

单项选择题A user is running a long update batch file. Many tables are updated and all the  statements are in one transaction. Before the process is finished， the user machine lost power. When the user calls you， what should you do as DBA？（）

A.A
B.B
C.C
D.D