Synonyms without a prefix or accessing the object without prefix

 set pages 0 lines 200 trims on verify off feedback off

accept grants_to  prompt 'Enter user to grant privileges: '

accept schema     prompt 'Enter schema on which to grant: '

spool tmpgrants.sql

set pages 0

-- Query for tables (views) in the specified schema

select 'grant select on ' || owner || '.' || table_name || ' to &grants_to;', chr(10),

       'create synonym &grants_to.' || table_name || ' for ' || owner || '.' || table_name || ';', chr(10)

from all_tables  -- Change from user_views to all_tables

where owner = upper('&schema')

union all

select 'grant select on ' || owner || '.' || view_name || ' to &grants_to;', chr(10),

       'create synonym &grants_to.' || view_name || ' for ' || owner || '.' || view_name || ';', chr(10)

from all_views  -- Change from dba_views to all_views

where owner = upper('&schema');

spool off;