Jagrutkumar Dalwadi,
Oracle Certified Expert,
Java Platform, Enterprise Edition 6 JavaServer Pages and
Servlet Developer (Formerly Sun Certified
JSP and Servlet Developer for the Java EE6 Platform (SCJSD 6)) certification provides knowledge required to develop Java EE 6 Enterprise applications using Oracle standard APIs/Components/Frameworks.
So, Struts or any other third-party frameworks may not be covered in Oracle certification.
You should have knwoledge in JSR's related to this exam and no need to worry about other frameworks.
Thanks