【赛迪网－IT技术报道】autotrace是SQL*PLUS中的一个工具，可以显示所执行查询的解释计划（explain plan）以及所用的资源。
（如果是其它版本的话可能要先执行/rdbms/admin/utlxplan.sql；再create public synonym plan_table for plan_table;）
grant all on plan_table to public；
运行sqlplus/admin/plustrace.sql；内容如下：
--
-- 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 "/ 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
再执行：
grant plustrace to public；
set autotrace off;
set autotrace on explain;
set autotrace on statistics;
set autotrace on;
（责任编辑：卢兆林）
