The return cursor(SYS_REFCURSOR) is too much slow

I have a table :"CUSTOMER" with two thousand of records, the required time to retrieve this information with a query is less than 2 seconds :
SELECT * FROM CUSTOMER But i need get this information through a function that require more than 2 MINUTES!!!

  FUNCTION getCUSTOMER( ) RETURN SYS_REFCURSOR AS

          CUR SYS_REFCURSOR;
  BEGIN    OPEN cur FOR ' SELECT * FROM CUSTOMER ';

   RETURN cur;
  END;  There is any database parameter that i need change ?? Any suggestion, please ??

 Regards,
 Santana Received on Fri Sep 11 2009 - 18:15:35 CEST