ORA-29983: Unsupported query for Continuous Query Notification

Hi, i'm having a LOV with auto refresh. If i add "Order by " to the LOV query , the following exception is thrown.
SQL error during statement preparation. Statement: SELECT * FROM (SELECT DISTINCT XXXX FROM YYYY) QRSLT ORDER BY "XXXX"
Error     ORA-29983: Unsupported query for Continuous Query Notification
I tried to override the create method of the VO, with "this.setNestedSelectForFullSql(false);" .. But this one disables the auto referesh property...
Could some one help to solve this. Thanks .

Hi, i looked into the ADF run-time source code and i can see that , the connection object " OracleDatabaseChangeListenerWrapper" class setting the mode as "BEST_EFFORT".
I would assume , by default adf run-time using the best effort mode , not the guaranteed mode.
The data base doc also says in best effort mode "order by" clause as well as key word "like" can be used for continuous query notification. But still i'm getting "ORA-29983".
Could some one clarify me. Thanks .

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    I think this is the query you asked for.
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    Dinuka.
    Edited by: dinuka on Jul 25, 2011 12:18 PM
    some package names removed due to company rules and regulations.

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                                       3 PX SEND BROADCAST PARALLEL_TO_PARALLEL SYS.:TQ10001 :Q1001Cost: 63 Bytes: 359,283 Cardinality: 15,621                     
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    1KKA1T205634     12     10.Feb.13 10:00     U     28.Feb.13 12:00     CLEAN HOUSE     18,083     8,833     2,125     0,833     4,125     0,083     0,750     0,208     2,125     0,666     0,042     7,125     
    1KKA1Z300612     12     08.Feb.13 14:00     F     20.Feb.13 16:00     REPAIR CAR     20,000     16,042     2,125     0,833     4,125     0,083     0,750     0,208     2,125     0,666          And now the explanation to the query result:
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    Thanks all for your help.
    Greets Reinhard W.

    Hi,
    i changed this query:
    with t2 as (
                select  t.*,
                        lead(step_date) over(partition by order_nr order by step_date) next_step_date
                  from  table_2 t
    select  t1.*,
            nvl(
                max(
                    case t2.wo_step
                      when 'U' then t2.step_date
                    end
               sysdate
              ) - t1.create_date age_1,
            nvl(
                max(
                    case t2.wo_step
                      when 'R' then t2.step_date
                    end
               sysdate
              ) - t1.create_date age_2,
            sum(
                case t2.wo_step
                  when 'B' then t2.next_step_date - t2.step_date
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      from  table_1 t1,
            t2
      where t2.order_nr = t1.order_nr
      group by t1.order_nr,
               t1.priority,
               t1.create_date,
               t1.act_step,
               t1.step_date,
               t1.employee,
               t1.descriptionTo this:
    with t2 as (
                select  t.*,
                        lead(step_date) over(partition by order_nr order by step_date) next_step_date
                  from  table_2 t
    select  t1.order_nr,
            nvl(
                max(
                    case t2.wo_step
                      when 'U' then t2.step_date
                    end
               sysdate
              ) - t1.create_date age_1,
            nvl(
                max(
                    case t2.wo_step
                      when 'R' then t2.step_date
                    end
               sysdate
              ) - t1.create_date age_2,
            sum(
                case t2.wo_step
                  when 'B' then t2.next_step_date - t2.step_date
                end
               ) step_b
      from  table_1 t1,
            t2
      where t2.order_nr = t1.order_nr
      group by t1.order_nrthen i get the ORA-00979 Error.
    Whats wrong?
    I have another question.
    How can i handle i i want to group to or more 'STEP's in one Column.
    in Case of this i want that the column 'STEP_B' contains all days for STEP 'B' and STEP '5'.
    I tried already with a + Operation like this:
    with t2 as (
                select  t.*,
                        lead(step_date) over(partition by order_nr order by step_date) next_step_date
                  from  table_2 t
    select  t1.*,
            nvl(
                max(
                    case t2.wo_step
                      when 'U' then t2.step_date
                    end
               sysdate
              ) - t1.create_date age_1,
            nvl(
                max(
                    case t2.wo_step
                      when 'R' then t2.step_date
                    end
               sysdate
              ) - t1.create_date age_2,
            Round( sum(
                case t2.wo_step
                  when 'B' then t2.next_step_date - t2.step_date
                end
               ) +
            sum(
                case t2.wo_step
                  when '5' then t2.next_step_date - t2.step_date
                end
               ), 3 ) step_b
      from  table_1 t1,
            t2
      where t2.order_nr = t1.order_nr
      group by t1.order_nr,
               t1.priority,
               t1.create_date,
               t1.act_step,
               t1.step_date,
               t1.employee,
               t1.descriptionBut this does reply evertime a NULL.
    Thank You.

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