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You're looking for a download link for SQL Developer 4.2 and also want to know about a related paper. I'll provide you with the information.

Available on the Oracle Downloads Page (select the 4.2 archive if available). Mac OS X: Requires a separate JDK 8 installation. Key Features in Version 4.2

To run SQL Developer 4.2 smoothly, your system should meet these minimum recommendations : At least 2 GB RAM.

Please note that you might need to create an Oracle account or sign in to your existing account to access the download.

Could you please provide more context or details about the paper you're looking for? What is the title or topic of the paper? I'll do my best to help you find it.

: Download SQL Developer 24.x or 23.x (current versions). They are still free, far more stable, and actively maintained.

Enhanced visibility into active SQL execution plans.

Oracle typically hosts current versions on its main page, but older versions like 4.2 are available via the Oracle Technology Network (OTN) Archive or specific legacy URLs. Download ZIP Windows (no JRE included): Download ZIP