@Dgielis

The APEX Developer Reinvented

Mar 15 · 5 min read · Recently I asked an AI tool to build me a World Cup prediction app.Within a couple of minutes it generated a full application; a React frontend, backend APIs, some database tables. It even came with i

Oracle Database 26ai Assertions in a World Cup Betting App

Mar 14 · 4 min read · Recently I was playing again with my World Cup betting application, originally built in 2006 with Oracle APEX. Yes… almost 20 years ago already! 😅 Back then the database enforced some constraints, bu

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Oracle APEX 25.1 and beyond

Oct 15, 2025 · 5 min read · Since Oracle has been quiet about the new release of Oracle APEX, the community has wondered what happened to the next release. I thought it would be helpful to write about what I know for Joel Kallman Day. In recent years, Oracle has released two ve...

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Making File Upload required in Oracle APEX

Jul 24, 2024 · 4 min read · Making the File Upload a required field is difficult with APEX 24.1 or earlier. In this post, I will show you the solution I use until Oracle APEX's native behavior improves. The definition of my table: create table xfile ( id number ge...

ORDS - SQL Developer Web: Fix Invalid credentials

Nov 22, 2023 · 2 min read · I had a weird issue with some Oracle database users I wanted to connect to in SQL Developer Web. When I tried to log in at https://hostname/ords/sql-developer, I received the error: Invalid credentials: If your ORDS schema alias is different from you...