ORA Database Error Messages ORA-02899: smscre: Cannot create SGA with Extended Shared Memory feature July 1, 2015 mpbod ORA-02899: smscre: Cannot create SGA with Extended Shared Memory feature Cause: The environment variable EXTSHM was set before starting oracle. Action: Unset the environment variable EXTSHM and startup oracle. 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)