多项选择题
A.You cannot export data from a remote database.
B.You can rename tables during an import operation.
C.You can overwrite existing dump files during an export operation.
D.You can compress the data during export but not the metadata because it is not supported.
单项选择题 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（）
单项选择题 You want to move all objects of the APPS user in the test database to the DB_USER schema of theproduction database. Which option of IMPDP would you use to accomplish this task（）
多项选择题 InwhichsituationsdoestheOracleDataPumpuseexternaltablesandnotthedirectpathloadwhileexportingatable（）