As far as you know APEX RTF Templates use a lot of TABLESPACE space. Due to it
After this actions I found that APEX component was removed from Oracle registry (dba_registry view), and some functionality invalidated.
So, I want to show how to register APEX again.
As a SYS user execute next procedures:
//This procedure emulate APEX v3.2 loading
exec dbms_registry.loading('APEX','Oracle Application Express','validate_apex', 'APEX_030200');
//Save APEX version
exec dbms_registry.loaded('APEX', '3.2.0.00.27');
//Make APEX to be a valid component
//Add additional schemes to registry
exec dbms_registry.update_schema_list('APEX', dbms_registry.schema_list_t('FLOWS_FILES'));