APEX 5 Source Used attribute – tolerating less mistakes

If you've upgraded to APEX 5 and find yourself with an error complaining about the 'Source Used' attribute:
APEX.SESSION_STATE.DB_COLUMN_SOURCE_USED
then you should thank APEX 5 for finding (and no longer tolerating) a logic bug in your application.

APEX 5 - correcting your applications

Track down that field and set the Source Used attribute to 'Always, replacing any existing value in session state'.

On a side note, setting the application's Compatability Mode to 4. (more...)

Auto-convert field to uppercase

This is just a quick note for my future reference. I needed all items with the class “uppercase” to be converted to uppercase, and I thought it would work with just some CSS:

.uppercase { text-transform:uppercase; }

This makes the items appear uppercase, but when the page is posted it actually sends the values exactly as the user typed. They’d type in “lower“, it looks like “LOWER” on screen, but (more...)

APEX blogger from Iran

At Kscope I felt geographically isolated, but I was impressed with all the second language speakers attending.

I can only speak one language, and some would argue I don't do well at that - but people were presenting in a language foreign to their native tongue! Kudos.

The Internet I see and view is predominantly English, and no doubt my search results are skewed accordingly. Occasionally I'll find some bloggers in another language and in (more...)

APEX 5 Colour Contrast

During the APEX 5 early adopter I remember a bit of discussion going around regarding the colour contrast.

I would have been one of the complainers, and it's one topic I forgot to raise with the team when I met them at Kscope.

Use of APEX 5 is ramping up at my current site and I couldn't go any further without having a little play. A while ago I used some filters in my ad (more...)

Disable IE Compatibility Mode

Most places I’ve worked at allow employees to use any of the major browsers to do their work, but mandate an “SOE” that only supports IE, presumably because that generates the most amount of work for us developers. I’d conservatively estimate that 99% of the rendering bugs I’ve had to deal with are only reproducible in IE. (cue one of the thousands of IE joke images… nah, just do a Google Image search, there’s plenty!)

(more...)

About using APEX_COLLECTIONS in a tabular form with INSTEAD OF triggers

Always check out the original article at http://www.oraclequirks.com for latest comments, fixes and updates.   In case you dreamed of updating an Apex tabular form built on top of a view based on APEX_COLLECTIONS by means of INSTEAD OF triggers, you must be ready to grant the following rights to the schema user attached to the workspace, otherwise you'll get an ORA-01031: Insufficient privileges

Tabular Form – set default values with jQuery

tabular-form-default-jquery4

I have a simple tabular form with a numeric “sort order” column. I want the value of this column to be defaulted automatically, based on the maximum value of the rest of the records on the screen. Unfortunately the builtin Apex default type for columns in a tabular form can only be based on an Item, or a PL/SQL expression or function. I didn’t want to make a database call to get the maximum value (more...)

Installing Oracle XE, ORDS and Apex on CentOS – Part Four: Stress testing

This is part four in a series of blog posts about how to install Oracle 11g Express Edition (XE) with Oracle Application Express (Apex) on a CentOS Linux server, with Apex served by Oracle REST Data Services (ORDS) running on top of Tomcat and Apache.

After setting up a small CentOS server with Oracle Express Edition (XE), I wanted to stress test it to see how much load such a barebones installation can handle. In (more...)

My Kscope15 sessions

My Kscope15 sessions are now available on my presentations page.

I linked to the Prezi version as they don't translate well to PDF, as those of you who tried downloading off the Kscope mobile app may have found.

The supporting code from my deep dive demos can be downloaded here:
http://sagecomputing.com.au/workshops/jquery_workshop_code.sql

Thank you to all those who attended, and cheers for all the great feedback, I sincerely appreciate it. I wish I (more...)

Installing Oracle XE, ORDS and Apex on CentOS – Part Three: Additional configuration

This is part three in a series of blog posts about how to install Oracle 11g Express Edition (XE) with Oracle Application Express (Apex) on a CentOS Linux server, with Apex served by Oracle REST Data Services (ORDS) running on top of Tomcat and Apache.

By now, you should have a working installation of CentoOS with Oracle XE, Apex, ORDS, TomCat and Apache. There are still some additional configuration and optimization we should do, which (more...)

ODTUG Kscope15 Review: It was the best of times, it was the best of times!

Last week AuraPlayer headed south to attend ODTUG’s annual KScope conference in Hollywood, Florida. It was very exciting to play many pivotal roles; serving as an ODTUG Board member, an Exhibitor, a 2 time speaker and an Oracle ACE Director. The event was definitely a highlight – I truly learned a lot and, of course, had a lot of fun.

With that being said, so much happened that it would be nearly impossible to provide an (more...)

KScope15 APEX Symposiums

Kscope15 officially kicked off on Sunday with a set of symposiums, I stayed in the APEX room the whole day, though I really wanted to hear what Steven Feuerstein had to say after lunch in the other room. I also hear a great discussion was had in the ADF room on tablet first vs mobile first.

APEX Episode 5 (A new frontier)

Joel Kallman kicked off the movie themed symposiums with a great talk about (more...)

Installing Oracle XE, ORDS and Apex on CentOS – Part Two: Installation

This is part two in a series of blog posts about how to install Oracle 11g Express Edition (XE) with Oracle Application Express (Apex) on a CentOS Linux server, with Apex served by Oracle REST Data Services (ORDS) running on top of Tomcat and Apache.

Let's get right to it, starting with Oracle XE.

Installing Oracle XE

This is actually quite straightforward, assuming you have followed the prerequisite steps in part one.



As part of (more...)

Installing Oracle XE, ORDS and Apex on CentOS – Part One: Preparation

This is part one in a series of blog posts about how to install Oracle 11g Express Edition (XE) with Oracle Application Express (Apex) on a CentOS Linux server, with Apex served by Oracle REST Data Services (ORDS) running on top of Tomcat and Apache.


Provisioning the server


First of all, we need a server to install the software on. There are many hosting providers that offer cheap Linux servers. I have been trying out (more...)

Installing Oracle XE, ORDS and Apex on CentOS

I am writing a series of blog posts about how to install Oracle 11g Express Edition (XE) with Oracle Application Express (Apex) on a CentOS Linux server, with Apex served by Oracle REST Data Services (ORDS) running on top of Tomcat and Apache.

This is perhaps better explained with an illustration of the setup:

Best of all, this setup consists only of free (license-free) software, and as you will see in this series of blog (more...)

APEX iFrame Security setting

At some point during APEX development you may find yourself putting an Oracle APEX page within an iFrame.
<iframe src="//myserver.com.au/ords/f?p=SAGE:1023:&SESSION."></iframe>

Just recently I did just that and came across an error I expected to see, but a little curious as to how it presented itself.

Refused to display '//myserver.com.au/ords/f?p=SAGE:1023:30559832045078' in a frame because it set 'X-Frame-Options' to 'DENY'.

Googling the last half of the message returns some interesting (more...)

AUSOUG: Perth Seminar May 28

Attention Perth Oracle technologists.

I'll be giving a dry run of my Kscope talk to the user group in Perth on May 28th, which happens to be the deadline for us to submit copies of our sessions to ODTUG.

So if you're in Perth, have any form of interest in APEX - come by the Oracle offices in near Kings Park by 8am, or come a bit earlier for a feed.

Evidence-Based APEX: Building Better Practices

Register here
http://www.ausoug.org.au/cms/rest/event/2125

Modal Popup Error Report Tutorial For EBS

Oracle Is Easy, a blog written by <a href="http://www.smartdogservices.com" SmartDog Services

Modal Popup Error Report Tutorial For E-Business Suite

 

 

We needed a popup report to show errors from a validation process and wanted to share the walkthrough so you can set this up yourself. Follow these steps and don’t miss an error notification again with this new east-to-read report.

image002

1. Create a hidden item called “’P25_MASS_ITEM_REC_ID” to store the Item ID (more...)

Thoth Gateway moved to GitHub, now supports Apex 5.0

As with the Alexandria PL/SQL Utility Library, the source code for the Thoth Gateway, a mod_plsql and Apex Listener/ORDS equivalent for Microsoft IIS, now has a new home on GitHub. This should make it easy for anyone to look at and perhaps contribute to the code.



If you don't care about the source code, you can head straight to the releases page to download just the binaries. Updated installation instructions for IIS 8 will (more...)

The Oracle APEX Talkshow

apex.press/talkshow
Not only has Juergen been adding style, pride and awareness to laptops worldwide, he's also launched a podcast.

I love podcasts. I listen to a few good science shows every week and I've been looking for some decent software related shows, and this one hits the subject matter right on the head.

Juergen states he hopes to interview many developers from the APEX team, offering perhaps a recording per month. Not limiting (more...)