RMAN Database Error Messages RMAN-06056: could not access datafile number January 19, 2021 mpbod RMAN-06056: could not access datafile number Cause: A backup or copy could not proceed because the datafile header could not be read or the header was not valid. Action: Make the datafile accessible or skip it. 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)