ORA Database Error Messages ORA-15053: diskgroup “string” contains existing files September 9, 2015 mpbod ORA-15053: diskgroup "string" contains existing files Cause: An attempt was made to drop a diskgroup that still contains existing files. Action: Specify the INCLUDING CONTENTS option to drop the diskgroup and all of its existing files. Back to previous menu 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)