ORA Database Error Messages ORA-09968: unable to lock file July 28, 2015 mpbod ORA-09968: unable to lock file Cause: The system call for locking a file returned an error when trying to acquire a database mount lock or the instance startup/shutdown lock. Action: Check errno for more information. Back to previous menu https://support.oracle.com/ http://www.oracle.com/ 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)