APEX 5.1 New Features

APEX 5.1 ist endlich da. Oracle Application Express wird mit jedem Release besser und zieht immer mehr Entwickler weltweit in seinen Bann. Es ist einfach, einfache wie auch komplexe Applikationen auf Basis des Oracle Stacks zu entwickeln. Es macht sogar richtig Spaß !

Mit APEX 5.1 sind als wichtiges neues Feature die Interactive Grids mit dazu gekommen. Wir haben sehr lange auf eine moderne Möglichkeit gewartet, Excel - ähnliche Funktionen auf einer Webseite mit (more...)

APEX IR column only exportable for administrators

A few days ago I tweeted about a solution from Martin Giffy D'Souza to hide a specific column from export.

In my case I needed some username columns to be displayed during run-time but only exportable for administrators. The export itself was made with the default APEX (more...)

A new year promises new possibilities!

The last year was quite successful even so it was a pain in the ass in many ways.
I have been on 3 conferences, made a few blog posts, got member at DOAG #NextGen, I initialized the "APEX Dashboard Competition" and I created a quite complicated example application which creates new solvable business cases for many of you: SVG in APEX.
This wouldn't be possible if I would have been alone. I worked (more...)

My first blog post with classeur.io

I’m trying to write this blog post with classeur.io.

Just like Martin I’m also searching for alternative ways to write blog posts. I don’t want to completely migrate my blog to a new platform, so I’m searching for a way to write in Markdown and deploy to Blogger.

Why Markdown?
Since our development of APEX Office Print (AOP) we also use Markdown for our documentation as it makes including code samples easier, it can (more...)

Ooops… I did it again.

APEX 5.1 is released! As Shaun points out at this forum post, the appendix of the Oracle Application Express 5.1 Installation Guide is missing instructions to downgrade back to 5.0, after a failed upgrade attempt.

My bad. I signed off on the Oracle Application Express Installation Guide as being complete for 5.1. Unfortunately, I did not pay enough attention to the appendix. We will get this corrected soon in a (more...)

SVG in APEX: Best Practices

In the last 8 month I was working on a new version of my SVG (Raphaël) example application. Of course I have a job (freelancer) and I have children. So the time to spend was diminished on only a few hours per week mostly on my way to work.
Some of the results were presented at the Swedish Oracle meetup in Summer '16. But the final application was made for DOAG 2016.

What leads me (more...)

Start to develop in APEX 5.1, you will gain at least an hour a day!

Yesterday APEX 5.1 ( was installed on apex.oracle.com.
This means that you can start developing your apps in APEX 5.1 from now on. Unlike the early adopter releases (apexea.oracle.com) you can develop your apps on apex.oracle.com and later export them and import in your own environment once the on-premise version of APEX 5.1 is available.

APEX 5.1 is again (more...)

SQL Developer: Quick Outline with SQL statements

Most of you probably know the "Quick Outline" function you have inside the SQL Developer.
It helps you to easily jump between different functions/procedures inside a package.

My colleague Holger told me about a bug in SQL Developer 3.x where you could use the "Outline" view with normal SQL files, too. Unfortunately in version 4 it didn't work anymore. So he stayed with version 3 for a long while. Otherwise he would had to (more...)

Tablespaces verkleinern (TEMP, USER_TS, ORA-03297)

Die Select-Statements in diesem Blogpost habe ich von anderen Webseiten kopiert. Daher ist dieser Beitrag eher als Zusammenfassung unterschiedlicher Lösungsversuche zu sehen und dient mir als schnelle Hilfe bei der Verkleinerung eines zu großen Tablespaces. Schaut euch die Quellen an, die sehr viel detaillierter auf die jeweiligen Probleme eingehen.

Wer kennt nicht die Situation? Der DBA ruft an und meint der TEMP Tablespace verbraucht mehrere hundert Gigabyte an Speicher.

Was ist in solch einer (more...)

DOAG 2016 Review

Die diesjährige DOAG war für mich anders als die Jahre zuvor. Dieses Jahr lag mein Fokus weniger auf Vorträgen, sondern mehr auf Community-Aktivitäten und Jugendarbeit.
Daher habe ich diverse Unconference Sessions besucht und viele Unterhaltungen geführt. Dabei habe ich zum Beispiel erfahren, dass es eine neue Community innerhalb der DOAG gibt  -  die DOAG NextGen. Bei der es darum geht, junge Menschen für Oracle zu begeistern.

DOAG 2016 und weitere APEX Events im November

Das größte deutschsprachige Oracle Event des Jahres steht vor der Tür.
Die DOAG Konferenz vom 15. bis zum 18.11.2016.

Wie schon in den letzten Jahren, bin ich auch dieses Jahr wieder mit dabei.
Mein Vortrag zum Thema "SVG in APEX" findet am Mittoch dem 16.11. um 13:00 Uhr statt.

Den Vortrag halte ich nicht allein. Sebastian Reinig ein sehr talentierter junger APEX-Consultant hält den Vortrag mit mir Zusammen. Sebastian hat (more...)

Open a windows directory from inside your APEX application (IE, Firefox, Chrome)

Back in 2010 I wrote about a solution for IE only: Open Windows directory with APEX (IE only)

The request itself appears at least once a year in one of my projects.
Nowadays I do not propose the workaround from 2010. It just doesn't fit in modern browsers.

Today I got another request to open a directory and this time I searched for 10 minutes and found a suitable solution working in IE, Firefox and (more...)

"ORA-20001: Application ID and current security group ID are not consistent" encountered during APEX Upgrade from 4.x to 5.x

Recently, our QA team at Oracle was testing database upgrades, and the following error appeared in the database upgrade log while the APEX component was being upgraded:

...Installing Theme 1

API Last Extended:20130101
Your Current Version:20130101
This import is compatible with version: 20130101
COMPATIBLE (You should be able to run this import without issues.)
APPLICATION 108801 - Theme: Simple Red
ERROR at line 1:
ORA-20001: Application ID and current security (more...)

APEX Frühstück Meetup Wien

Kurz notiert: am 4.11.2016 gibts ein APEX Frühstücks-Meetup mit vielen neuen Infos zu Oracle APEX.

Bitte hier anmelden: https://www.meetup.com/orclapex-Vienna/events/234665282/

OTN Nordic ACE Tour : A Tale of Three Cities

3 days - 3 cities - 6 presentations (4 different ones)

My tour started on Monday afternoon when I left my house around 1.30PM to get on the bus to the train station. The 2PM train left exactly on time for the Amsterdam airport. I arrived at Schiphol around 3:30PM, perfectly on time to catch the 5PM flight to Copenhagen.
The flight to Copenhagen was very uneventful. From the airport I took the train (more...)

Presenting at KScope can change your life

Back in 2008 I was invited by Scott Spendolini to speak about my experiences with Oracle APEX at the German telecom shops at the KScope conference in New Orleans.

It was a truly great experience. 

At that time the system I had built was one of the larger deployments of Oracle APEX known in the community serving 6.000 users in the 800 telecom shops in Germany with 400.000 hits per day on (more...)

OTN Appreciation Day : APEX

If you're following some Oracle blogs or Twitter, you'll see many blog posts starting with "OTN Appreciation Day : " today. You can read the story behind this initiative on Tim Hall's blog. "The blog post content should be short, focusing more on why you like the feature, rather than technical content."
In my life Oracle played (and is still playing) an important role... and it all started because I love working with (more...)

OTN Appreciation Day: Oracle Text

For OTN Appreciation Day, I was told that it wouldn't be appropriate to write about my favorite Oracle feature (APEX, obviously).  So I'll gladly promote my second-favorite Oracle Database feature...Oracle Text!

I've used Oracle Text for many years - from when it was SQL*TextRetrieval to Oracle ConText Option to Oracle interMedia Text to finally Oracle Text.  This was one of those products that used to be a for-cost option and was (more...)

OTN Appreciation Day : APEX Metadata Repository

Thanks Tim for coming up with that great idea.

My favorite feature is the Oracle APEX Metadata Repository.

As you are probably aware of, APEX applications aren’t compiled. They are stored as metadata in a relational data model. Of course we aren’t allowed to access the tables in the APEX schema directly (e.g. APEX_050000), but APEX provides a bunch of dictionary views to read everything you want to know.

You can find all views (more...)

Remove the screen reader link from your APEX Footer without breaking the UT Subscription

That’s a looong title, right?

I got a questions like that in the past year on a regular basis: “do you know how to remove the Set Screen Reader Mode On link from an APEX application footer without breaking the universal theme subscription?”

sample_database_applicationAnd I always had to say “never tried, but there must be a way”. Today was finally the day when I wanted to get rid of the message from one of (more...)