AUTOTRACE Option in SQL*Plus

 admin]$ sqlplus '/as sysdba'

SQL> @?/sqlplus/admin/plustrce.sql
SQL>
SQL> drop role plustrace;
drop role plustrace
          *
ERROR at line 1:
ORA-01919: role 'PLUSTRACE' does not exist


SQL> create role plustrace;

Role created.

SQL>
SQL> grant select on v_$sesstat to plustrace;

Grant succeeded.

SQL> grant select on v_$statname to plustrace;

Grant succeeded.

SQL> grant select on v_$mystat to plustrace;

Grant succeeded.

SQL> grant plustrace to dba with admin option;

Grant succeeded.

SQL> grant plustrace to xxuser;

Grant succeeded.

GRANTEE                        TYP PRIVILEGE OR ROLE
------------------------------ --- --------------------------------------------------------------------------
XXUSER                              PLUSTRACE

Refer: AUTOTRACE Option in SQL*Plus (Doc ID 43214.1)