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查看已执行过SQL的执行计划(dems_xplan.display_cursor)

原创 Linux操作系统 作者:q418441117 时间:2013-03-13 15:44:04 0 删除 编辑

SQL> select hash_value,child_number,sql_text from v$sql where sql_text like 'select status%';

HASH_VALUE CHILD_NUMBER
---------- ------------
SQL_TEXT
--------------------------------------------------------------------------------
 155446740            0
select status from test1 where wner='XDB'

SQL> select * from table(dbms_xplan.display_cursor(155446740,0,'advanced'));

PLAN_TABLE_OUTPUT
--------------------------------------------------------------------------------
HASH_VALUE  155446740, child number 0
-------------------------------------
select status from test1 where wner='XDB'

Plan hash value: 4122059633

---------------------------------------------------------------------------
| Id  | Operation         | Name  | Rows  | Bytes | Cost (%CPU)| Time     |
---------------------------------------------------------------------------
|   0 | SELECT STATEMENT  |       |       |       |   561 (100)|          |
|*  1 |  TABLE ACCESS FULL| TEST1 |  3020 | 39260 |   561   (1)| 00:00:07 |

PLAN_TABLE_OUTPUT
--------------------------------------------------------------------------------
---------------------------------------------------------------------------

Query Block Name / Object Alias (identified by operation id):
-------------------------------------------------------------

   1 - SEL$1 / TEST1@SEL$1

Outline Data
-------------

  /*+

PLAN_TABLE_OUTPUT
--------------------------------------------------------------------------------
      BEGIN_OUTLINE_DATA
      IGNORE_OPTIM_EMBEDDED_HINTS
      OPTIMIZER_FEATURES_ENABLE('11.2.0.2')
      DB_VERSION('11.2.0.2')
      ALL_ROWS
      OUTLINE_LEAF(@"SEL$1")
      FULL(@"SEL$1" "TEST1"@"SEL$1")
      END_OUTLINE_DATA
  */

Predicate Information (identified by operation id):

PLAN_TABLE_OUTPUT
--------------------------------------------------------------------------------
---------------------------------------------------

   1 - filter("OWNER"='XDB')

Column Projection Information (identified by operation id):
-----------------------------------------------------------

   1 - "STATUS"[VARCHAR2,7]


42 rows selected.

 

来自 “ ITPUB博客 ” ,链接:https://blog.itpub.net/26655292/viewspace-756055/ ,如需转载,请注明出处,否则将追究法律责任。

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