You know when you are working in SQL Developer, and you have to reconnect because your connection has been terminated?
Pretty annoying, right?
This extension solves your problem! By sending a simple query to the database every n seconds, it keeps your connection alive.
Just download the latest release:
It comes as a ZIP, which you can simply install in SQL Developer with the menu Help > Check for Updates.
After restarting SQL developer, click the first icon from the right to start using the keepalive.
Something is not clear? Read two sections ahead ;)
The community wanted this. I started from MinChen Chai's extension for SQL Developer 3 and ported it to the OSGi framework used from version 4.