Call now: 252-767-6166  
Oracle Training Oracle Support Development Oracle Apps

 E-mail Us
 Oracle Articles
New Oracle Articles

 Oracle Training
 Oracle Tips

 Oracle Forum
 Class Catalog

 Remote DBA
 Oracle Tuning
 Emergency 911
 RAC Support
 Apps Support
 Oracle Support

 SQL Tuning

 Oracle UNIX
 Oracle Linux
 Remote s
 Remote plans
 Application Server

 Oracle Forms
 Oracle Portal
 App Upgrades
 SQL Server
 Oracle Concepts
 Software Support

 Remote S


 Consulting Staff
 Consulting Prices
 Help Wanted!


 Oracle Posters
 Oracle Books

 Oracle Scripts

Don Burleson Blog 







Fast data transfer between instances

Oracle Database Tips by Donald BurlesonApril 11,  2015

An Oracle ACE notes this great way to transfer data between instances.

One of the least publicized but nicest capabilities of data pump is the ability to transfer data directly from one instance to another without using a datafile to transport the data.

If you want to transfer data between instances without punching the data into a data pump dmp file, you can use a database link to transport data between instances directly.

The data is transported across a db link from one instance to another.

Oracle data pump still requires a directory on the server to store some information, but the data itself is transferred directly over the database link.

This is a huge time and space saver for those large data transfer operations. This is how to define the directory and database link:

create directory dpump_dir as '/tmp';
create public database link source_db using 'source_db';

Now, from the command prompt, you can invoke the data pump import (impdp) and direct import to copy an entire schema from one instance to another instance:

impdp system/system directory=dpump_dir network_link=source_db remap_schema=scott:dest_user;

The command above will import the scott schema from source_db to the current database, and rename the schema to dest_user.

If the dest_user does not exist, it will be created.  For complete details on Oracle data transfer tricks, see the book "Advanced Oracle Utilities".



Oracle Training at Sea
oracle dba poster

Follow us on Twitter 
Oracle performance tuning software 
Oracle Linux poster


Burleson is the American Team

Note: This Oracle documentation was created as a support and Oracle training reference for use by our DBA performance tuning consulting professionals.  Feel free to ask questions on our Oracle forum.

Verify experience! Anyone considering using the services of an Oracle support expert should independently investigate their credentials and experience, and not rely on advertisements and self-proclaimed expertise. All legitimate Oracle experts publish their Oracle qualifications.

Errata?  Oracle technology is changing and we strive to update our BC Oracle support information.  If you find an error or have a suggestion for improving our content, we would appreciate your feedback.  Just  e-mail:  

and include the URL for the page.


Burleson Consulting

The Oracle of Database Support

Oracle Performance Tuning

Remote DBA Services


Copyright © 1996 -  2020

All rights reserved by Burleson

Oracle ® is the registered trademark of Oracle Corporation.