ORA Database Error Messages ORA-00042: Unknown Service name string May 18, 2015 mpbod ORA-00042: Unknown Service name string Cause: An attempt was made to use an invalid application service. OAction: Use a valid service name from SERVICE$ or add a new service using the DBMS_SERVICE package. 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)