ORA Database Error Messages ORA-31691: The worker received message number string from the MCP, which is invalid November 29, 2017 mpbod ORA-31691: The worker received message number string from the MCP, which is invalid Cause: Bad code Action: Fix mcp code and reissue export/import command 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)