Are Oracle university workshop enough to take a certification exam ?

Hello,
Lets say I have just cleared 1z0-061. I wanna try OCA SQL or OCE SQL. Would you say attending Oracle University suggested workshop class trainning would be sufficient for me to grasp the theory (and hopefully alittle be of hand on practice) necessary to pass one of these exams ?
For instance, will taking this workshop help me in my quest ? -> https://education.oracle.com/pls/web_prod-plq-dad/db_pages.getpage?page_id=5001&get_params=p_exam_id:1Z0-047 The recommended trainning section
Did you pass any Oracle (Dabatase, SQL or Java, etc...) certification by concentrating on their workshop ?
Would you go from 1Z0-061 straight to 1Z0-047 to make a halt at 1Z0-071 first ?
Lets say I have just cleared 1z0-061. I wanna try OCA SQL or OCE SQL. Would you say attending Oracle University suggested workshop class trainning would be sufficient for me to grasp the theory (and hopefully alittle be of hand on practice) necessary to pass one of these exams ?
For instance, will taking this workshop help me in my quest ? -> https://education.oracle.com/pls/web_prod-plq-dad/db_pages.getpage?page_id=5001&get_params=p_exam_id:1Z0-047 The recommended trainning section
Did you pass any Oracle (Dabatase, SQL or Java, etc...) certification by concentrating on their workshop ?
Would you go from 1Z0-061 straight to 1Z0-047 to make a halt at 1Z0-071 first ?
Comments
I studied about 2 years and took official Oracle training for OCE SQL.
Boss scored 80% on the professional exam for 12c using exclusively UCertify. It may be worth looking at.
And that's pretty much everyone I know who's passed an Oracle exam even software side for Java has been through UCertify and the official cert guides. Worth looking into.