ORA Database Error Messages ORA-02257: maximum number of columns exceeded June 17, 2015 mpbod ORA-02257: maximum number of columns exceeded Cause: The number of columns in the key list exceeds the maximum number. Action: Reduce the number columns in the list. 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)