ORA Database Error Messages ORA-01759: user function is incorrectly defined June 11, 2015 mpbod ORA-01759: user function is incorrectly defined Cause: A user function has been improperly defined. Action: Contact Oracle Support Services. 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)