There is an invalid query in the ./lib/question.php file with a reference to an ambiguous column definition which appears twice in the select. Oracle will not accept this as a valid query and errors with :

SQL ORA-00918: column ambiguously defined in /usr/local/moodle-src/rel-20100113-4/lib/dmllib.php on line 481. STATEMENT: SELECT n.questionid as question, s.*, n.sumpenalty FROM m_question_states s, m_question_sessions n WHERE s.id = n.newgraded AND n.attemptid = '67706' AND n.questionid = '31777' with limits (-1, 1), referer: http://moodle.cqu.edu.au/mod/quiz/view.php?id=47336

I have fixed this in the two places within that file by removing the reference to the duplicated column and have included a patch.

Also, i have not submitted a patch before so i would be willing to have any comments about format of patch....etc??