Took and just about passed this exam on Monday past. The time given for the questions was just about enough (I think it used to 80 questions in 90 mins not 70 in 90 as it is now!) . My own PL/SQL knowledge plus Matthew Morris's 1z0-144 Exam Guide got me over the line. I would recommend it (and practice parsing PL/SQL code very quickly in your head!) to anyone thinking of sitting the exam.