ORA Database Error Messages ORA-09988: error while detaching SGA July 28, 2015 mpbod ORA-09988: error while detaching SGA Cause: skgmsdef struct is corrupted and/or segment addresses are modified Action: Safely shut down instance and mount SGA segments again. 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)