APEX Training

Thursday, 28 February 2013

Oracle and APEX

This is the text of an email I received as a response after creating an account for my workspace and my demo application at apex.oracle.com:

"Thank you so much. Oracle and APEX has the most amazing network of help and solutions. It is impressive."

Monday, 18 February 2013

APEX Training 15.04. - 17.04.2013

Wie jedes Jahr in den letzten sechs Jahren, veranstalten wir (Dietmar Aust und ich) unser

Oracle APEX: Knowhow aus der Praxis


Training in Bensheim an der Bergstrasse. Wir werden unsere bisherigen Themen überarbeiten und einige neue Themen hinzufügen. So werde ich auch folgende neue Themen in das Programm der Schulung aufnehmen:

- jQuery (Beispiele und Übungen)
- APEX Collections
- Erstellung von komplexen Forms
- APEX und Mehrsprachigkeit

Wir haben dieses Mal einen ganz speziellen Gast zu der Schulung eingeladen - Christian Rokitta aus den Niederlanden. Er ist ein Experte in Sachen Layoutgestalltung und Mobile Applikationen. Die Teilnehmer der Schulung werden sich gemeinsam für eins dieser Themen entscheiden und Christian wird es vortragen.

Unser Highlight sind auf jeden Fall die abendlichen  Q & A Session, in denen die Teilnehmer die Gelegenheit bekommen ihre eigenen Projekte vorzustellen und ihre konkrete Probleme mit uns zu diskutieren.

Die Anmeldung zur Schulung finden Sie hier.




Saturday, 16 February 2013

Count Substring Occurrences in a String

If you write a lot of PL/SQL code, sooner or later you will be faced with a requirement to count the number of occurrences of a substring in a string. In that case you may use this example to help yourself:


It will search not only for a single character withing a string but also for a substring of any length up to 4000 characters.

Thursday, 14 February 2013

APEX Authentication Function

Did you know that an authentication function in APEX is not used the way a function actually should be used?  Normally, this function has two input parameters and it will return TRUE or FALSE. However, you will name this function in your authentication schema by typing it into a box, without providing any parameters. I have never looked into that but my assumption is that APEX will probably create a kind of a dynamic function call by providing the parameters using login items (:p101_username, :p101_password) from your login page (101).

Now, it may happen to you that you not just only copy / paste the code in your new application but you decide for some reason to write your authentication function from scratch. There is one important thing you shouldn't forget: You can not name the function input parameters as you like. Otherwise, the function will not work. It will cause an error like this:

This error message is a bit confusing and it may make you busy for a while. At least it does that with me from time to time.