begin
  ctx_thes.create_thesaurus(
    name     => 'FORESTTHESAURUS',
    casesens => false
  );
end;
/

SQL> begin
  ctx_thes.create_thesaurus(
    name     => 'FORESTTHESAURUS',
    casesens => false
  );
end;
/  2    3    4    5    6    7
  ctx_thes.create_thesaurus(
  *
ERROR at line 2:
ORA-06550: line 2, column 3:
PLS-00201: identifier 'CTX_THES' must be declared
ORA-06550: line 2, column 3:
PL/SQL: Statement ignored

select status, version from dba_registry where comp_id='CONTEXT';
select object_name, object_type 
from dba_objects 
where owner='CTXSYS' and status != 'VALID' order by 1,2;

SQL> select status, version from dba_registry where comp_id='CONTEXT';
select status, version from dba_registry where comp_id='CONTEXT'
                            *
ERROR at line 1:
ORA-00942: table or view does not exist


SQL> select object_name, object_type
from dba_objects
where owner='CTXSYS' and status != 'VALID' order by 1,2;  2    3
from dba_objects
     *
ERROR at line 2:
ORA-00942: table or view does not exist