ORA Database Error Messages ORA-09986: wrong number of bytes read from SGA definition file July 28, 2015 mpbod ORA-09986: wrong number of bytes read from SGA definition file Cause: Struct skgmsdef size differs from no. of bytes read from SGA file Action: Compare the two struct definitions and ensure that they are identical in size and structure. 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)