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SQL> explain plan for SELECT distinct * from (select
  2   (PROD_9005_GDF_WK_SS_FDIM.PROD_4_NAME),
  3    PROD_9005_GDF_WK_SS_FDIM.PROD_5_NAME
  4  from
  5    GLOBL_DEMND_FRCST_WK_FCT,
  6    PROD_9005_GDF_WK_SS_FDIM,
  7    GDF_SRCE_REGN_LKP
  8  WHERE
  9    ( GDF_SRCE_REGN_LKP.SRCE_REGN_ID=GLOBL_DEMND_FRCST_WK_FCT.SRCE_REGN_ID  )
 10    AND  ( GLOBL_DEMND_FRCST_WK_FCT.PROD_SKID=PROD_9005_GDF_WK_SS_FDIM.PROD_SKID  )
 11    AND
 12    (GDF_SRCE_REGN_LKP.SRCE_REGN_ID   IN ('AA','GC','NE')));
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SQL> select * from table(dbms_xplan.display);
PLAN_TABLE_OUTPUT
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Plan hash value: 900446578
-----------------------------------------------------------------------------------------------------------------------------------------
| Id  | Operation                        | Name                         | Rows  | Bytes |TempSpc| Cost (%CPU)| Time     | Pstart| Pstop |
-----------------------------------------------------------------------------------------------------------------------------------------
|   0 | SELECT STATEMENT                 |                              |   258K|  9582K|       | 13588   (9)


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