RMAN Database Error Messages RMAN-20039: format requires character when duplexing February 11, 2021 mpbod RMAN-20039: format requires character when duplexing Cause: SET_DUPLEX=ON was specified, but character was not part of the format. Action: Include character in format, or use number. 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)