单选题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（）Aremove the dumpfile option in the commandBremove the flashback_time option in the commandCremove 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）Dadd the user， SYSTEM， to the schemas option in the commandEremove the schemas option and add the network_link = devdb.us.oracle.com option in the command Fadd network_link = devdb.us.oracle.com option in the command
单选题
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
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