SP2-0618: Cannot find the Session Identifier. Check PLUSTRACE role is enabled

SP2-0618: Cannot find the Session Identifier. Check PLUSTRACE role is enabled

今天是2013-09-17，在今天学习sql执行计划的是发现如下问题：
问题描述：
在rhys用户下开启sql语句计划报如下错误：

SQL> set autotrace on
SP2-0618: Cannot find the Session Identifier. Check PLUSTRACE role is enabled
SP2-0611: Error enabling STATISTICS report
问题分析：
由于该rhys账户没有PLUSTRACE角色导致此问题的产生。
解决办法：
1）查看$ORACLE_HOME/sqlplus/admin下的plustrce.sql发现如下内容：
-- Copyright (c) Oracle Corporation 1995, 2002. All Rights Reserved.
--
-- NAME
-- plustrce.sql
--
-- DESCRIPTION
-- Creates a role with access to Dynamic Performance Tables
-- for the SQL*Plus SET AUTOTRACE ... STATISTICS command.
-- After this script has been run, each user requiring access to
-- the AUTOTRACE feature should be granted the PLUSTRACE role by
-- the DBA.
--
-- USAGE
-- sqlplus "sys/knl_test7 as sysdba" @plustrce
--
-- Catalog.sql must have been run before this file is run.
-- This file must be run while connected to a DBA schema.

set echo on

drop role plustrace;
create role plustrace;

grant select on v_$sesstat to plustrace;
grant select on v_$statname to plustrace;
grant select on v_$mystat to plustrace;
grant plustrace to dba with admin option;

set echo off
2）执行该sql创建plustrace角色。
SQL> @./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>

SQL> grant plustrace to rhys;

Grant succeeded.

3）登录rhys账户在此开启sql语句分析功能。

SQL> conn rhys/amy

Connected.

SQL> set autotrace on

SQL>

发现该问题得到解决。

~

SQL> r
1 select ename,job,sal,dname from amy_emp,amy_dept where amy_emp.deptno=amy_dept.deptno
2 and not exists
3* (select * from amy_salgrade where amy_emp.sal between losal and hisal)

no rows selected

Execution Plan
----------------------------------------------------------
Plan hash value: 2345751609

----------------------------------------------------------------------------------------------
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
----------------------------------------------------------------------------------------------
| 0 | SELECT STATEMENT | | 1 | 42 | 9 (23)| 00:00:01 |
| 1 | NESTED LOOPS | | 1 | 42 | 9 (23)| 00:00:01 |
| 2 | NESTED LOOPS | | 1 | 42 | 9 (23)| 00:00:01 |
| 3 | MERGE JOIN ANTI | | 1 | 29 | 8 (25)| 00:00:01 |
| 4 | SORT JOIN | | 14 | 294 | 4 (25)| 00:00:01 |
| 5 | TABLE ACCESS FULL | AMY_EMP | 14 | 294 | 3 (0)| 00:00:01 |
|* 6 | FILTER | | | | | |
|* 7 | SORT JOIN | | 5 | 40 | 4 (25)| 00:00:01 |
| 8 | TABLE ACCESS FULL | AMY_SALGRADE | 5 | 40 | 3 (0)| 00:00:01 |
|* 9 | INDEX RANGE SCAN | REVERSE_INDEX | 1 | | 0 (0)| 00:00:01 |
| 10 | TABLE ACCESS BY INDEX ROWID| AMY_DEPT | 1 | 13 | 1 (0)| 00:00:01 |
----------------------------------------------------------------------------------------------

Predicate Information (identified by operation id):
---------------------------------------------------

6 - filter("AMY_EMP"."SAL"<="HISAL")
7 - access(INTERNAL_FUNCTION("AMY_EMP"."SAL")>=INTERNAL_FUNCTION("LOSAL"))
filter(INTERNAL_FUNCTION("AMY_EMP"."SAL")>=INTERNAL_FUNCTION("LOSAL"))
9 - access("AMY_EMP"."DEPTNO"="AMY_DEPT"."DEPTNO")

Statistics
----------------------------------------------------------
0 recursive calls
0 db block gets
4 consistent gets
0 physical reads
0 redo size
530 bytes sent via SQL*Net to client
512 bytes received via SQL*Net from client
1 SQL*Net roundtrips to/from client
2 sorts (memory)
0 sorts (disk)
0 rows processed

SQL>