单选题You want to import schema objects of the HR user using Oracle Data Pump from the development database，DEVDB， to the production database， PRODDB. A database link devdb.us.oracle.com is created betweenPRODDB and DEVDB. You execute the following command o

第1题：

You are working on a CATDB database that contains an Oracle Database version 11.1 catalog schema owned by the user RCO11. The INST1 database contains an Oracle Database version 10.1 catalog schema owned by the user RCAT10.  You want the RMAN to import metadata for database IDs 1423241 and 1423242， registered in RCAT10， into the recovery catalog owned by RCO11. You also want to deregister them from the catalog after import. You executed the following commands to achieve this：   RMAN> CONNECT CATALOG rco11/password@catdb  RMAN> IMPORT CATALOG rcat10/oracle@inst1 DBID=1423241，1423242；   What happens if the RCO11 catalog has scripts with the same name as that of the scripts in RCAT10 catalog？（）

• A、 The scripts in the RCO11 catalog are overwritten.
• B、 RMAN renames the local stored scripts in the RCO11 catalog.
• C、 The RMAN session in which the command is executed aborts.
• D、 RMAN renames the global scripts that are imported from the RCAT10 catalog.

第2题：

You want to import schema objects of the HR user using Oracle Data Pump from the development database，DEVDB， to the production database， PRODDB. A database link devdb.us.oracle.com is created betweenPRODDB and DEVDB. You execute the following command on the PRODDB database server：$ impdp system/manager directory = DB_DATAdumpfile = schemas.datschemas = hr flashback_time = "TO_TIMESTAMP（’25-08-2007 14：35：00’， ’DD-MM-YYYY HH24：MI：SS’）"The command fails displaying the following error：ORA-39001： invalid argument valueORA-39000： bad dump file specification ORA-31640： unable to open dump file "/home/oracle/schema/schemas.dat" for read ORA-27037： unable toobtain file status What would you do to overcome the error（）

• A、Add the user， SYSTEM， to the schemas option.
• B、Add the network_link = devdb.us.oracle.com option.
• C、Change the dumpfile option to schema.dat@devdb.us.oracle.com.
• D、Replace the schemas option with the network_link = devdb.us.oracle.com
• E、Replace the dumpfile option with the network_link = devdb.us.oracle.com

第3题：

第4题：

In your production database you want to use an Automatic Storage Management （ASM） instance to manage the database files. Which option would you use to migrate the database files from a non-ASM instance to an ASM instance？（）

• A、Oracle Migration Assistant
• B、Recovery Manager （RMAN）
• C、Oracle Data Pump Export and Import
• D、conventional Oracle Export and Import
• E、operating system utilities to copy the files to the ASM instance

第5题：

You have created a database link， devdb.us.oracle.com， between the databases PRODDB and DEVDB. You want to import schema objects of the HR user using Oracle Data Pump from thedevelopment database， DEVDB， to the production database， PRODDB. You execute the following command on the target database server：  $impdp system/manager directory = DB_DATA dumpfile = schemas.dat schemas = hr  flashback_time = 2004-02-03 09：00  The command fails， displaying the following error： ORA-39001： invalid argument value  ORA-39000： bad dump file specification  ORA-31640： unable to open dump file “/home/oracle/schema/schemas.dat” for read ORA-27037： unable to obtain file status What would you do to overcome the error（）

• A、remove the dumpfile option in the command
• B、remove the flashback_time option in the command
• C、remove the dumpfile option and add the network_link = devdb.us.oracle.com option in the command（Replace thedumpfile option with the network_link = devdb.us.oracle.com）
• D、add the user， SYSTEM， to the schemas option in the command
• E、remove the schemas option and add the network_link = devdb.us.oracle.com option in the command 
• F、add network_link = devdb.us.oracle.com option in the command

第6题：

You are using flat files as the data source for one of your data warehousing applications. To optimize the application performance， you plan to move the data from the flat files to clustered tables in an Oracle database.While migrating the data， you want to have minimal impact on the database performance and optimize the dataload operation.  Which method would you use to load data into the Oracle database（）

• A、Use the external table population.
• B、Use the Oracle Data Pump export and import utility.
• C、Use the conventional path data load of the SQL*Loader utility.
• D、Use the INSERT INTO...SELECT command to load the data

第7题：

n your production database you want to use an Automatic Storage Management （ASM） instance to manage the database files. Which option would you use to migrate the database files from a non-ASM instance to an ASM instance？（）

• A、 Oracle Migration Assistant
• B、 Recovery Manager （RMAN）
• C、 Oracle Data Pump Export and Import
• D、 conventional Oracle Export and Import
• E、 operating system utilities to copy the files to the ASM instance

第8题：

第9题：

You want to migrate your application from the development environment to the production environment. While doing the task， you want the database objects owned by the user DEVUSER in the development environment to be moved to the user APPS in the production environment. Which option of Oracle Data Pump Import would you use to achieve this objective？（）

• A、owner
• B、touser
• C、include
• D、schemas
• E、fromuser
• F、transform
• G、remap_schema
• H、remap_datafile
• I、reuse_datafiles
• J、remap_tablespace

第10题：

The database administrator of your company created a public synonym called HR for the HUMAN_RESOURCES table of the GENERAL schema, because many users frequently use this table. As a user of the database, you created a table called HR in your schema. What happens when you execute this query? SELECT * FROM HR;（）

• A、You obtain the results retrieved from the public synonym HR created by the database administrator.
• B、You obtain the results retrieved from the HR table that belongs to your schema.
• C、You get an error message because you cannot retrieve from a table that has the same name as a public synonym.
• D、You obtain the results retrieved from both the public synonym HR and the HR table that belongs to your schema, as a Cartesian product.
• E、You obtain the results retrieved from both the public synonym HR and the HR table that belongs to your schema, as a FULL JOIN.