SP2-0618: The session identifier cannot be found. Enable check PLUSTRACE role Solution

SP2-0618: The session identifier cannot be found. Enable the check PLUSTRACE role solution for the following operations, please use SQL * plus or sqlplus dostool for demonstration, use PLSQL Developer tool seems to have problems. SQL> show user; USER is "OUTLINE" SQL> set autotrace on; SP2-0618: The session identifier cannot be found. Enable exam PLUSTRACE role SP2-0611: An error occurred while enabling STATISTICS reporting www.2cto.com solution: Execute the plustrce. SQL script, create the plustrace role, and assign to public. SQL> conn/as sysdba connected. SQL> @ D: \ dev \ oracle \ product \ 10.2.0 \ db_1 \ sqlplus \ admin \ plustrce. SQL SQL> drop role plustrace; drop role plustrace * row 1st error: ORA-01919: role 'plustrace 'does not exist SQL> create role PLUSTRACE; role created. SQL> grant select on v _ $ sesstat to plustrace; authorization successful. SQL> grant select on v _ $ statname to plustrace; authorization successful. Www.2cto.com SQL> grant select on v _ $ mystat to plustrace; authorization successful. SQL> grant plustrace to dba with admin option; authorization successful. SQL> set echo off; SQL> grant plustrace to public; authorization successful. SQL> conn outline/oracle is connected. SQL> set autotrace on;-Yes