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 humor:  Hidden table names

Oracle Tips by Tony Jambu


Oracle guru Tony Jambu published this great trick for the DBA. 

Try this code out on your DBA and see how long he or she takes to figure it out.

First, create a fairly large table with a specially formulated name ?^HDROPME.

Then, ask your DBA to drop the table called ?DROPME? and time how long he or she takes.

To create table:

(co1 number)

Notice the two additional characters in front of ?DROPME?? This is a space??

Followed by the Backspace or CHR (8) character.(In vi, you would type ?CTRL-v? followed by the Backspace character)


Understanding why-the CHR(8) or backspace character will behave is if you had typed the Backspace key, erase the previous character, In this case the single space. The following sample code will provide a visual explanation.

create table  ?ABC - (co1 number);
create table ?ABC^H? (co1 number);
create table ?ABC^H^H? (co1 number);
create table ?ABC^H ^H ^H? (co1 number);
create table ?HABC? (co1 number);
select table-name, table-name//?- - ?
TABLE_NAME                    TABLE_NAME
ABC                           ABC - -
AB                            AB- -
A                             A--
                              - - C
ABC                           ABC - -                                          
5 rows selected.

The ?^H character is the backspace character and will shift the cursor back by one space.

The sequence ?A^HB? will produce the following string, ?B? on terminals/screens that display plain ASCII characters, this is because after the character ?A? is drawn, the ?^H? character will backspace over ?A? and ?B? is drawn over it.



If you like Oracle tuning, you might enjoy my book "Oracle Tuning: The Definitive Reference", with 950 pages of tuning tips and scripts. 

You can buy it direct from the publisher for 30%-off and get instant access to the code depot of Oracle tuning scripts.



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.