How To Invoke the Data Pump Import Utitlity? - Oracle DBA FAQ - Loading and Exporting Data

The Data Pump Import utility is distributed as executable file called "impdp.exe". To invoke this utility, you should go to the "bin" directory of your Oracle server installation and run the "impdp" command. Here is tutorial exercise on how to invoke the import utility:

>cd \oraclexe\app\oracle\product\10.2.0\server\BIN

>impdp help=y
Import: Release 10.2.0.1.0 - 

The Data Pump Import utility provides a mechanism for 
transferring data objects between Oracle databases. The 
utility is invoked with the following command:

   Example: impdp scott/tiger DIRECTORY=dmpdir 
     DUMPFILE=scott.dmp

You can control how Import runs by entering the 'impdp' 
command followed by various parameters.

   Format:  impdp KEYWORD=value or
     KEYWORD=(value1,value2,...,valueN)

   Example: impdp scott/tiger DIRECTORY=dmpdir 
     DUMPFILE=scott.dmp

USERID must be the first parameter on the command line.

Keyword    Description (Default)
----------------------------------------------------------
ATTACH     Attach to existing job, e.g. ATTACH [=job name]
DIRECTORY  Directory object to be used for dump, log, ... 
DUMPFILE   List of dumpfiles to import from (expdat.dmp)
FULL       Import everything from source (Y).
HELP       Display help messages (N).
......