A.Only the SET command must be within a RUN block.B.All……

单项选择题When importing a table into a database，the import process performs these tasks：  1. Triggers are imported.  2. Data is imported.  3. New tables are created.  4. Indexes are built.  5. Any bitmap， functional， and or domain indexes are built.  6. Integrity constraints are enabled on the new tables.  Which option shows the tasks in the order in which they are performed？（）

A.2，3，4，1，6，5
B.3，2，4，1，6，5
C.3，2，6，4，1，5
D.4，2，3，1，5，6

多项选择题ThedatabaseisrunninginNOARCHIVELOGmode.Adatafileislost.Whichtwoarevalidoptionsforrecover？（）

A.Restore the data file and perform incomplete recovery.
B.Restore the data file and perform point-in-time recover.
C.Drop the tablespace and lose all data in the tablespace.
D.Restore the database and lose all data since the last backup.

单项选择题You received these error messages because the client cannot find the desired database：   ORA-12198： TNS：could not path to destination  ORA-12203： TNS：unable to connect to destination  Which action would be appropriate in helping to resolve the errors？（）

A.A
B.B
C.C

单项选择题Oracle Net Services is composed of several communication layers， known as a stack，which enables clients and database severs to share，modify，and manipulate data. Which reveals the correct architecture，in hierarchical order，of the client-side stack？（）

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

单项选择题WhichstatementistrueregardingRMANcomponents？（）

A.Each target database requires its own recover catalog. 
B.RMAN scripts can be stored in the recovery catalog or the target control file. 
C.A channel is a stream of data to a device type and corresponds to one server session. 
D.The RMAN executable interprets sever session commands and establishes connections to the target database.