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 







expdp flashback_time tips

Oracle Database Tips by Donald BurlesonFebruary 20, 2015

Question:  I need flashback_time parameter of expdp to take a read consistent copy of my table.  How do I use the flashback_time parameter in expdp?

Answer:  Here is an example of a consistent export flashback_time with expdp.  In dbms_datapump, you use the set_parameter procedure to set flashback_time.

Flashback_time at current time

The  flashback_time=systimestamp syntax: is the current time.

root> cat myar.par


root> expdp scott/tiger parfile=mypar.par

Flashback_time at specific time

Instead of the current time, you can specify any time which is possible within flashback capabilities (undo log sizes). using the to_timestamp argument. 

Oracle notes that the system change number (SCN) that most closely matches the specified time is found, and this SCN is used to enable the Flashback utility. The export operation is performed with data that is consistent up to this SCN.

root> cat myar.par

="to_timestamp('13-02-2014 12:21:00', 'DD-MM-YYYY HH24:MI:SS')"

root> expdp scott/tiger parfile=mypar.par 

Flashback_time at daily time

This takes an export at a fixed time each day.  This takes an export with the timestamp at which my script runs at 11 PM (sysdate + 22/24)


For specifying complex date in flashback_time, see my notes here for using date manipulation with the to_timestamp function.

Oracle Training from Don Burleson 

The best on site "Oracle training classes" are just a phone call away! You can get personalized Oracle training by Donald Burleson, right at your shop!

Oracle training



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.



Oracle Training at Sea
oracle dba poster

Follow us on Twitter 
Oracle performance tuning software 
Oracle Linux poster