Oracle Data Pump (IMPDP) via Network link

I use Oracle's datapump via network link methodology whenever I need to use data pump instead of taking export, copying over dumpfiles, and then doing import.  The Data pump via network link method is much simpler.


- Create user on SOURCE db to use for network link in TARGET database.
CREATE USER ARTISDBA IDENTIFIED BY "Password123$";
GRANT DBA TO ARTISDBA;

- Create Database link on target
CREATE DATABASE LINK SERVICE_NAME CONNECT TO ARTISDBA IDENTIFIED BY "Password123$" USING 'SERVICE_NAME';

- Copy TNSNAMES entry for source  database to target's tnsnames.ora file.

- Create directory in TARGET to use for your logfiles.
CREATE DIRECTORY dumpdir AS '/orabkup/expdp';
GRANT READ,WRITE ON DIRECTORY dumpdir to PUBLIC;

- Run import job on TARGET.  You parallelize the job to make it faster.
impdp parfile=impdp.par

PARFILE contents:

DIRECTORY=dumpdir
NETWORK_LINK=SERVICE_NAME
SCHEMAS='TEST'
PARALLEL=4
LOGFILE=impdp_from_service_name.log

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