I try to install update for XCode and high sierra 10.13.2

However, there is phantom process which I cannot restart.

All the sql-developer process is gone but somehow it thinks its still there.

enter image description here


You can force kill the process through terminal killall SQLDeveloper1. Then proceed to restart

To get to your original objective which I interpreted as 'restarting your macOS'.

Related: macOS - Mac App SQLDeveloper stuck in Dock after application closed, Process killed - Ask Different

1Forcefully killing processes can have unintended side-effects.

  • I did a hard reboot: sudo su - reboot now it works! – Mookayama Jul 5 '18 at 3:29
sudo su -
reboot now

It works doing a hard reboot on terminal

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