Oracle:é possível criar um sinônimo para um esquema?

select ksppinm, ksppstvl from x$ksppi a, x$ksppsv b where a.indx=b.indx and ksppinm like '%schema%synonym%'
ALTER SYSTEM SET  "_enable_schema_synonyms" = true SCOPE=SPFILE;
STARTUP FORCE
show parameter synonym

CREATE SCHEMA SYNONYM  ORASYN for ORA;   -- create synonym for schema
CREATE TABLE ORASYN.TAB1(id number(10)); -- create table in schema