The issue was a missing column in the ROUTE_OVERRIDE table. Maya opened the Database Navigator (View → Database → Database Navigator). She connected to the new 23c database, compared the old schema (from a backup dump) with the new one, and found the problem: TIMESTAMP type mismatch.
With two clicks, she used to alter the table definition in the project—no need to manually write ALTER scripts yet. jdeveloper 14c
The CTO gave Maya 48 hours to fix it. The old code was undocumented, the team had no local environment, and the XML configuration files looked like ancient runes. The issue was a missing column in the ROUTE_OVERRIDE table
Maya was a senior developer at LogiNext Solutions , a logistics startup. Their flagship application tracked delivery trucks in real-time. Two days before a major client demo, the legacy system crashed. The cause? A custom-built Java Swing tool, used by dispatchers to manually override truck routes, had stopped talking to the new Oracle Database 23c. With two clicks, she used to alter the