ORA Database Error Messages ORA-16561: cannot remove an active instance October 1, 2015 mpbod ORA-16561: cannot remove an active instance Cause: The instance to be removed is currently running. Action: Shut down the instance and reissue the REMOVE command. Back to previous menu Share this:Click to email a link to a friend (Opens in new window)Click to print (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Tumblr (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on Reddit (Opens in new window)Click to share on Pocket (Opens in new window)