ORA Database Error Messages ORA-04933: initial service identifier is non-zero July 7, 2015 mpbod ORA-04933: initial service identifier is non-zero Cause: A valid service identifier existed before the sequence number service was opened. Action: Verify that the instance is completely shut down. 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)