ТЕМА:

grant execute on mdsys.sparql_service to rdfuser;  
grant execute on mdsys.sdo_sem_http_ctx to rdfuser;

Error:
ORA-04042: procedure, function, package, or package body does not exist

SQL> desc mdsys.sparql_service;
FUNCTION mdsys.sparql_service RETURNS ANYDATASET
Argument Name            Type            In/Out Default?
------------------------------ ----------------------- ------ --------
QUERY                VARCHAR2        IN
ENDPOINT            VARCHAR2        IN
VARIABLES            VARCHAR2        IN
PUSHED_RESULTS         REF CURSOR        IN     DEFAULT
JOIN_VARS            VARCHAR2        IN     DEFAULT
OPTIONS            VARCHAR2        IN     DEFAULT

desc mdsys.sparql_service;

sparql_service is not found in MDSYS user.

select count(1) from mdsys.rdf_value$ where rownum <= 1;

select count(1) from mdsys.rdf_value$ where rownum <= 1;

COUNT (1)
-----------------
                1