Parallel hint in OBIEE 11g

Dear All,
I am new to OBIEE. Can any one tell me how to add parallel hint in 11g. Is Oracle BI Presentation Service ignores any DB Hint added to query while parsing. If yes, how to overcome this. We need to add parallel hint in few report to make things faster, i do not want to touch the table level hints as it is affecting my performance.
I have gone through oracle doc ID 823193.1
Thanks and Regards,
Anand.

Hi Jay,
Thanks for your reply.
can you please give a practical example by working in a sqlplus. I tried and got below error. Please help.
SQL> select * from t;
         N
         1
SQL> select n from t;
         N
         1
SQL> select /*+PARALLEL (t,2)*/ n from t;
         N
         1
SQL> select EVALUATE('/*+PARALLEL (t,2)*/',t."n") from t;
select EVALUATE('/*+PARALLEL (t,2)*/',t."n") from t
ERROR at line 1:
ORA-00904: "T"."n": invalid identifierRegards,
Anand.

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