The "Log off" button in the toolbar has a "disconnect all" option. As the database is remembered for each tab already would it be possible to add a "Reconnect all" option in the "log on" button on the toolbar?

Context, we connect to multiple databases via a VPN tunnel and the VPN drops once in a while. Every time I have to restore all connections including main. Would save some time again.

I have added this to the list of enhancement requests. Note that there already is a "Check connection" option (Preferences > Oracle > Connections), which will periodically check if a connection is still alive, and will reconnect as needed.

Maybe you can use my 'Reconnect' plugin.
https://plugins.bar-solutions.com

Sorry @Patrick I didn't respond to this earlier. For a while now I've been having performance and stability issues, so I'm not installing plugin's now, just so I can keep those out of consideration.
The VPN issues I have now fixed by making changes to windows power saving settings. I'm still trying to figure out something to change in order to prevent the initializing... when changing to a tab connected to another database, that I've not used for more then x minutes. (I say X minutes, because time seems to be relevant, just don't know yet how long. Thinking something like 10 minutes...) Maybe something like a ping for all sessions is required?
(I already have: "check connection", "check all sessions" and "automatically close unused connections" set btw...)