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 







Oracle time display mismatch tips

Expert Oracle Database Tips by Donald BurlesonAugust 20, 2015

Question:  When I select sysdate from dual it shows me the time in EST. But when I try to fetch the time from a table column which is being updated with sysdate, it shows me the time in UTC.  The table column is a DATE datatype.  The value shows as EST from the application, but it displays as UTC when fetched through a SQL select in SQL*Plus.  Why this difference in time display?

Answer: The difference is obviously the way that the date is displayed in SQL*Plus.  Some time display anomalies are the result of your local setting for the time_zone or the tz_offset variables.  Try this test:

alter session set time_zone= '-6:00';


This does not apply to you (because your table column is a DATE datatype, but the Oracle Globalization manual notes:

"The database time zone is relevant only for TIMESTAMP WITH LOCAL TIME ZONE columns.

Oracle normalizes all TIMESTAMP WITH LOCAL TIME ZONE data to the time zone of the database when the data is stored on disk.

If you do not specify the SET TIME_ZONE clause, then Oracle uses the time zone of the operating system of the server.

If the operating system's time zone is not a valid Oracle time zone, then the database time zone defaults to UTC."

Get the Complete
Oracle SQL Tuning Information 

The landmark book "Advanced Oracle SQL Tuning  The Definitive Reference"  is filled with valuable information on Oracle SQL Tuning. This book includes scripts and tools to hypercharge Oracle 11g performance and you can buy it for 30% off directly from the publisher.



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