ORA Database Error Messages ORA-15042: ASM disk “string” is missing September 9, 2015 mpbod ORA-15042: ASM disk "string" is missing Cause: The specified disk, which is a necessary part of a diskgroup, could not be found on the system. Action: Check the hardware configuration. 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)