授权scott用户可以开启执行计划，脚本如下：
[Oracle@rac1 admin]$ sqlplus / as sysdba
SQL*Plus: Release 10.2.0.5.0 - Production on Sat Oct 12 02:02:28 2013
Copyright (c) 1982, 2010, Oracle. All Rights Reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.5.0 - 64bit Production
With the Partitioning, Real Application Clusters, OLAP, Data Mining
and Real Application Testing options
SQL> @$ORACLE_HOME/rdbms/admin/utlxplan.sql
Table created.
SQL> @$ORACLE_HOME/sqlplus/admin/plustrce.sql
SQL>
SQL> drop role plustrace;
Role dropped.
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> grant plustrace to scott;
Grant succeeded.
利用scott开启执行计划
SQL> conn scott
Enter password:
Connected.
SQL> set autotrace on;
SQL> select * from tab;
TNAME TABTYPE CLUSTERID
------------------------------ ------- ----------
DEPT TABLE
EMP TABLE
BONUS TABLE
SALGRADE TABLE
T TABLE
E1 TABLE
6 rows selected.
Execution Plan
----------------------------------------------------------
ERROR:
ORA-01039: insufficient privileges on underlying objects of the view
SP2-0612: Error generating AUTOTRACE EXPLAIN report
Statistics
----------------------------------------------------------
287 recursive calls
0 db block gets
709 consistent gets
1 physical reads
0 redo size
755 bytes sent via SQL*Net to client
492 bytes received via SQL*Net from client
2 SQL*Net roundtrips to/from client
12 sorts (memory)
0 sorts (disk)
6 rows processed
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