Annals of Oracle's Improbable Errors
Welcome to Flavio Casetta's official Oracle database application development related blog.
Saturday, July 25, 2026
Dealing with JSON serialization and how to convert JSON object strings back and forth
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A simple reminder about how JSON PL/SQL methods deal with JSON values, it easy to get confused when you mix up JSON objects and their serial...
Thursday, November 20, 2025
SQLDeveloper 23.1.1 fails on startup
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Getting a long trace of errors like the following on launching SQLDeveloper? ... oracle.ide.indexing - org.netbeans.InvalidException: Ne...
Monday, November 03, 2025
APEX Error 572 autopsy
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A couple of days ago I exported an application from APEX 24.1.5 and imported it into APEX 24.2.9 on my OCI free tier instance. Whilst the ap...
Wednesday, October 29, 2025
Tip of the day: hide (or show) multiple buttons or other page components with a single dynamic action
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Need to hide or show multiple buttons or page items basing on a common client-side condition? Instead of creating a single dynamic action f...
Wednesday, October 15, 2025
Oracle APEX, OCI, Ollama at work thanks to OllAPEX for the #JoelKallmanDay
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Today is the day dedicated to the late Joel Kallman, a mentor and friend, so I thought it would be nice to show off my APEX application host...
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