Oracle11g 表访问完全，而不是在oracle中使用分区，同时使用并行

我在一个表XYZ上使用下面的查询，它是3 TB。一个分区（按天划分）的大小约为90GB。 问题是它只采用并行方式，并执行FTS而不是单分区访问。 当我们移除并行时，它会执行单个分区访问

请帮助，我们需要使用并行，应该使用单分区而不是FTS

enter code here

   SELECT /*+PARALLEL(A,4)*/
    MSISDN,
   CALL_START_DATE,
   DEST_NUMBER,
   IN_CALL_TYPE,
   CELL_ID,
   DEVICE_ID,
  CDR_TYPE,
  CALL_DURATION,
  CALL_CHARGES,
  COS_ID,
  USAGE_ALCS_ID,
  DISC_ALCS_ID,
  SUBSTR(BAL_INFO,
    INSTR(BAL_INFO, '*', INSTR(BAL_INFO, '1*CORE BALANCE'), 3) + 1,
    INSTR(BAL_INFO, '*', INSTR(BAL_INFO, '1*CORE BALANCE'), 4) - 1 -
    INSTR(BAL_INFO, '*', INSTR(BAL_INFO, '1*CORE BALANCE'), 3)) CORE_REV,
  SUBSTR(BAL_INFO,
    INSTR(BAL_INFO, '*', INSTR(BAL_INFO, '*3*PROMOTIONAL BALANCE 1'), 4) + 1,
    INSTR(BAL_INFO, '*', INSTR(BAL_INFO, '*3*PROMOTIONAL BALANCE 1'), 5) - 1 -
    INSTR(BAL_INFO, '*', INSTR(BAL_INFO, '*3*PROMOTIONAL BALANCE 1'), 4)) PROMO_REV,
    SUBSTR(BAL_INFO,
    INSTR(BAL_INFO, '*', INSTR(BAL_INFO, '*271*PROMO BAL V7'), 4) + 1,
    INSTR(BAL_INFO, '*', INSTR(BAL_INFO, '*271*PROMO BAL V7'), 5) - 1 -
    INSTR(BAL_INFO, '*', INSTR(BAL_INFO, '*271*PROMO BAL V7'), 4)) PROMO_BAL_V7,
     SUBSTR(BAL_INFO,
    INSTR(BAL_INFO, '*', INSTR(BAL_INFO, '*313*PROMO BAL V4'), 4) + 1,
    INSTR(BAL_INFO, '*', INSTR(BAL_INFO, '*313*PROMO BAL V4'), 5) - 1 -
    INSTR(BAL_INFO, '*', INSTR(BAL_INFO, '*313*PROMO BAL V4'), 4)) PROMO_BAL_V4,
   0' FREE_MINS,
   '0' FREE_SMS,
   '0' OFF_PEAK,
  '0' PROMO_SEC,
  '0' V2VL_2300_0700
   FROM xyz
   WHERE CDR_TYPE in ('VOICE', '0', '4', 'SMS')
    AND CALL_START_DATE BETWEEN TO_DATE('20140501', 'YYYYMMDD') AND
   TO_DATE('20140501235959', 'YYYYMMDDHH24MISS')
    AND NVL(TOT_NON_CURCY_CHRG, 0) = 0;

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以下片段中的A是什么：

SELECT /*+PARALLEL(A,4)*/....

我没有看到任何别名A。您的提示不正确（或发布的代码不完整）。

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Dosc are

您是否可以简化查询，例如通过删除大部分

SELECT

列表？另外，您是否可以使用

解释计划…

和

从表中选择*（dbms\u xplan.display）发布好的和坏的解释计划？过帐时丢失别名。假设别名存在。