Explain Plan 使用

SQL> set autotrace on;
SP2-0613: 无法验证 PLAN_TABLE 格式或实体
SP2-0611: 启用EXPLAIN报告时出错

执行utlxplan.sql在$ORACLE_HOME/rdbms/admin下

SQL> @F:/oracle/ora92/rdbms/admin/UTLXPLAN.SQL

表已创建。

SQL> SET AUTOTRACE ON;
SQL> SELECT * FROM V$INSTANCE;

INSTANCE_NUMBER INSTANCE_NAME
--------------- ----------------
HOST_NAME
----------------------------------------------------------------
VERSION           STARTUP_TI STATUS       PAR    THREAD# ARCHIVE LOG_SWITCH_
----------------- ---------- ------------ --- ---------- ------- -----------
LOGINS     SHU DATABASE_STATUS   INSTANCE_ROLE      ACTIVE_ST
---------- --- ----------------- ------------------ ---------
              1 ncdbpx
KJC03
9.2.0.5.0         14-3月 -05 OPEN         NO           1 STARTED
ALLOWED    NO  ACTIVE            PRIMARY_INSTANCE   NORMAL

Execution Plan
----------------------------------------------------------
   0      SELECT STATEMENT Optimizer=CHOOSE
   1    0   NESTED LOOPS
   2    1     NESTED LOOPS
   3    2       FIXED TABLE (FULL) OF 'X$QUIESCE'
   4    2       FIXED TABLE (FULL) OF 'X$KVIT'
   5    1     FIXED TABLE (FULL) OF 'X$KSUXSINST'

Statistics
----------------------------------------------------------
          0  recursive calls
          0  db block gets
          0  consistent gets
          0  physical reads
          0  redo size
       1295  bytes sent via SQL*Net to client
        503  bytes received via SQL*Net from client
          2  SQL*Net roundtrips to/from client
          0  sorts (memory)
          0  sorts (disk)
          1  rows processed