SQL> conn sys/sys as sysdba
已连接。

SQL> @ %oracle_home%/rdbms/admin/utlxplan.sql

表已创建。
---这个脚本只是创建一张plan_table表

SQL> create role plustrace;

角色已创建

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

授权成功。

SQL>? grant select on v_$statname to plustrace;

授权成功。

SQL> grant select on v_$session to plustrace;

授权成功。

SQL> grant plustrace to dba with admin option;

授权成功。

SQL> set autotrace on;

SQL> grant all on plan_table to public;

授权成功。

SQL> grant plustrace to scott;

授权成功。

?

utlxplan.sql内容：
==========================================================================================
rem
rem $Header: utlxplan.sql 29-oct-2001.20:28:58 mzait Exp $ xplainpl.sql
rem
Rem Copyright (c) 1988, 2001, Oracle Corporation.? All rights reserved.?
Rem NAME
REM??? UTLXPLAN.SQL
Rem? FUNCTION
Rem? NOTES
Rem? MODIFIED
Rem???? mzait????? 10/26/01? - add keys and filter predicates to the plan table
Rem???? ddas?????? 05/05/00? - increase length of options column
Rem???? ddas?????? 04/17/00? - add CPU, I/O cost, temp_space columns
Rem???? mzait????? 02/19/98 -? add distribution method column
Rem???? ddas?????? 05/17/96 -? change search_columns to number
Rem???? achaudhr?? 07/23/95 -? PTI: Add columns partition_{start, stop, id}
Rem???? glumpkin?? 08/25/94 -? new optimizer fields
Rem???? jcohen???? 11/05/93 -? merge changes from branch 1.1.710.1 - 9/24
Rem???? jcohen???? 09/24/93 - #163783 add optimizer column
Rem???? glumpkin?? 10/25/92 -? Renamed from XPLAINPL.SQL
Rem???? jcohen???? 05/22/92 - #79645 - set node width to 128 (M_XDBI in gendef)
Rem???? rlim?????? 04/29/91 -???????? change char to varchar2
Rem?? Peeler???? 10/19/88 - Creation
Rem
Rem This is the format for the table that is used by the EXPLAIN PLAN
Rem statement.? The explain statement requires the presence of this
Rem table in order to store the descriptions of the row sources.

create table PLAN_TABLE (
?statement_id ?varchar2(30),
?timestamp??? ?date,
?remarks????? ?varchar2(80),
?operation??? ?varchar2(30),
?options?????? ?varchar2(255),
?object_node? ?varchar2(128),
?object_owner ?varchar2(30),
?object_name? ?varchar2(30),
?object_instance numeric,
?object_type???? varchar2(30),
?optimizer?????? varchar2(255),
?search_columns? number,
?id??numeric,
?parent_id?numeric,
?position?numeric,
?cost??numeric,
?cardinality?numeric,
?bytes??numeric,
?other_tag?????? varchar2(255),
?partition_start varchar2(255),
??????? partition_stop? varchar2(255),
??????? partition_id??? numeric,
?other??long,
?distribution??? varchar2(30),
?cpu_cost?numeric,
?io_cost??numeric,
?temp_space?numeric,
??????? access_predicates varchar2(4000),
??????? filter_predicates varchar2(4000));

==================================================================================================