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

connect / as sysdba

   create user tq84_view_owner identified by pw default tablespace data quota unlimited on data;
   create user tq84_view_user  identified by pw;

   grant create session, create table, create view to tq84_view_owner;
   grant create session                            to tq84_view_user ;

connect tq84_view_owner/pw;

   create table xyz(num number, txt varchar2(10));
   create view  xyz_v as select num*2 dbl, txt from xyz;
   grant select on xyz_v to tq84_view_user;

connect tq84_view_user/pw;

   select * from tq84_view_owner.xyz_v;

   explain plan for select * from tq84_view_owner.xyz_v;
--
-- ERROR at line 1:
-- ORA-01039: insufficient privileges on underlying objects of the view
--

connect / as sysdba

   drop user tq84_view_user;
   drop user tq84_view_owner cascade;