AUTOTRACE

17:46:15 HR@ datacenter>set autotrace only
Usage: SET AUTOT[RACE] {OFF | ON | TRACE[ONLY]} [EXP[LAIN]] [STAT[ISTICS]]
17:47:36 HR@ datacenter>set autot trace
17:47:50 HR@ datacenter>select * from employees;

107 rows selected.


Execution Plan
----------------------------------------------------------
Plan hash value: 1445457117

-------------------------------------------------------------------------------
| Id  | Operation         | Name      | Rows  | Bytes | Cost (%CPU)| Time     |
-------------------------------------------------------------------------------
|   0 | SELECT STATEMENT  |           |   107 |  7383 |     3   (0)| 00:00:01 |
|   1 |  TABLE ACCESS FULL| EMPLOYEES |   107 |  7383 |     3   (0)| 00:00:01 |
-------------------------------------------------------------------------------


Statistics
----------------------------------------------------------
          0  recursive calls
          0  db block gets
         14  consistent gets
          0  physical reads
          0  redo size
      10427  bytes sent via SQL*Net to client
        601  bytes received via SQL*Net from client
          9  SQL*Net roundtrips to/from client
          0  sorts (memory)
          0  sorts (disk)
        107  rows processed

--autotrace设置
参考文章
参考文档:《Oracle9i10g变成艺术》