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 







Understanding APEX concurrency management

Oracle Tips by Burleson Consulting
Robert Freeman

APEX Default Mechanisms


APEX provides default mechanism to prevent concurrency or ?lost update? issues within an application.  This mechanism is called ?Automatic Row (DML) Processing?.    The mechanism can automatically be created during the ?Create Page? Wizard or can be added manually afterward.   This approach also provides 2 other advantages: do not have to provide SQL coding for DML actions and APEX will perform the DML actions automatically.  


The ?Automatic Row Processing? mechanism can be added to a form simply by using the ?Create Page? wizard.   When creating a page using one of the Form templates the mechanism will be created.   You can verify this by looking at the Page Definition/Page Processing/Processes section where there will be an entry name similar to this entry: Process Row of Emp.    If you click on this, it will specify that it is a type Automatic Row Processing (DML).  


You can also add the functionality manually to the form.  For a page, simply go to the Page Definition and add a Process under Page Processing.    Here are the instructions from the User Guide, page 8-21.


To create an Automatic Row Processing (DML) process:

1. Navigate to the appropriate Page Definition.

2. Under Processes, click the Create icon.

3. Select the process type Data Manipulation.

4. Select the process category Automatic Row Processing (DML).

5. Specify the following process attributes:

a. In the Name field, type a name to identify the process.

b. In the Sequence field, specify a sequence number.

c. From the Point list, select the appropriate processing point. In most instances,

select Onload - After Header.

d. From the Type list, select Automated Row Processing (DML).

6. Follow the on-screen instructions.


You will also have to make sure you implement two other features:


1.                  Add items and define the Item Source Type as Database Column and specify a case-sensitive column name

2.                  Select the option Always overrides the cache value

Please help Professor Cerutti!

Professor Cerutti is working on an exciting new book "The Words of the Day".  Dr. Cerutti has been studying words for decades and specializes in understanding the unlikely origins of English words and phrases.  With a genius for making word origins fun, Professor Cerutti mesmerizes young minds with his exciting and shocking insights into the roots of modern jargon.

Please help Dr. Cerutti by taking a quick glance at his book:

He wants the book to be a bestseller, and your feedback is greatly appreciated. . . .



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.