set autotrace报错

报错：

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SQL> set autotrace traceonly
SP2-0618: Cannot find the Session Identifier.  Check PLUSTRACE role is enabled
SP2-0611: Error enabling STATISTICS report

原因分析：

根据上面的错误提示"SP2-0618: Cannot find the Session Identifier. Check PLUSTRACE role is enabled"我们知道是****因为PLUSTRACE角色没有授权给该用户导致的****

解决办法：

重新创建PLUSTRACE用户

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SQL> conn / as sysdba
Connected.
SQL> select * from dba_role_privs where granted_role='SQL> conn / as sysdba
Connected.
SQL> select * from dba_role_privs where granted_role='PLUSTRACE';

no rows selected

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> 
SQL> set echo off
SQL> ';

no rows selected

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> 
SQL> set echo off
SQL>

发现sys用户执行成功，但是scott用户执行还是失败

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SQL> conn / as sysdba
Connected.
SQL> set autotrace traceonly;
SQL> conn scott/oracle
Connected.
SQL> set autotrace traceonly;
SP2-0618: Cannot find the Session Identifier.  Check PLUSTRACE role is enabled
SP2-061

将统计信息视图权限赋予scott

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grant select on v_$sesstat to SCOTT;
grant select on v_$statname to SCOTT;
grant select on v_$mystat to SCOTT;

再次执行成功

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SQL>  set autotrace traceonly;
SQL>