Hi all
While explaining i am getting this error please help.

SQL> set autotrace on
SP2-0618: Cannot find the Session Identifier. Check PLUSTRACE role is enabled
SP2-0611: Error enabling STATISTICS report


SQL> set autotrace traceonly explain
SQL> select * from cat;

Execution Plan
ORA-01039: insufficient privileges on underlying objects of the view

SP2-0612: Error generating AUTOTRACE EXPLAIN report