Autotrace是sqlplus的一个工具，用来显示所执行查询的查询计划
设置步骤
• cd [ORACLE_HOME]/rdbms/admin
• log into SQL*Plus as SYSTEM
• run @utlxplan
• run CREATE PUBLIC SYNONYM PLAN_TABLE FOR PLAN_TABLE;
• run GRANT ALL ON PLAN_TABLE TO PUBLIC;
创建PLUSTRACE角色
cd [ORACLE_HOME]/sqlplus/admin
• log into SQL*Plus as SYS or AS SYSDBA
• run @plustrce
• run GRANT PLUSTRACE TO PUBLIC;
控制查询计划报告
- SET AUTOTRACE OFF
- SET AUTOTRACE ON EXPLAIN
- SET AUTOTRACE ON STATISTICS
- SET AUTOTRACE ON
- SET AUTOTRACE TRACEONLY
这里没有写出以上命令的区别，自己记忆一下。