ORA Database Error Messages ORA-09766: osnmop: buffer allocation failure July 24, 2015 mpbod ORA-09766: osnmop: buffer allocation failure Cause: The Mach driver failed to allocate enough vm space for its I/O buffers. Action: Decrease the value of buffer_size parameter in the Two-Task driver hoststring. 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)