Why? Because Oracle JInitiator is not standard Java. It is a specialized, browser-embedded Java Virtual Machine (JVM) that was bundled with older versions of Oracle Applications (now called Oracle E-Business Suite) — specifically release 11i and early R12. These systems control supply chains, financial ledgers, and HR portals that have been running uninterrupted for nearly two decades.
It forced client computers to use a specific, Oracle-certified JVM to handle heavy enterprise ERP apps rather than relying on the browser's native, unpredictable Java environment.
Despite being end-of-life, this specific version remains a requirement for organizations that have not yet migrated their Oracle EBS environments to modern frameworks.