REPORT DBMS_STATS

To report gather schema statistics
set long 1000000 
VARIABLE MY_REPORT CLOB;
BEGIN
:MY_REPORT :=DBMS_STATS.REPORT_GATHER_SCHEMA_STATS(
OWNNAME=>'SCOTT',
DETAIL_LEVEL=>'TYPICAL',
FORMAT=>'HTML');
END;
/

select :MY_REPOR as report from dual;

exec dbms_stats.GATHER_SCHEMA_STATS(ownname=>'C##AGAP2');

variable myreport clob; 
set long 1000000 
begin 
:myreport := dbms_stats.report_gather_schema_stats 
(ownname =>'C##AGAP2', 
detail_level=>'ALL', 
format=>'TEXT'); 
end; 
/

select :MY_REPOR as report from dual;