long-term query work - included steps proposed by Randolf

Hello

I did my best to follow the statement Randolf Word-by-Word and hope to get the solution for my
problem soon. Sometimes back, I posted a thread about this problem then occupied with others
stuff and wasn't able to follow. Here I am again with the same question.

Here's the link to my previous post
long running query in database 10g
Here is the bottom of my requriemment.

I'm working on Oracle forms 10g, which uses the package below. We want to display the information about the customer
with order County ADB on different status as pending, error, back-Order, expedited, shipping of std.
Output will look like.
client name   pending    error   backorder   expedited   std shipping
ABC            24         0       674          6789         78900
XYZ            35         673    5700           0           798274
.
.
.
There are 40 customers total. The long-running query are accelerated and the delivery of std.


When I run the package of Oracle Developer of shape, it takes 3 minutes to run but when I run the same query in our application using forms
(who uses Oracle Application Server) it takes about 1 hour, which is totally unacceptable.
The user wants it be done in less than 1 minute.

I tried to combine together in the waiting, error and out of stock of queries, but AFAIK this is not
work in the form of Oracle that we need a placeholder for each situation.

Please don't think this is the related issue of forms, it's a performance problem.

PACKAGE BODY ORDER_COUNT_PKG IS
  
 PROCEDURE post_query IS
  
  BEGIN
                 
       BEGIN
            SELECT count(*)
              INTO :ORDER_STATUS.PENDING
              FROM orders o
          WHERE o.status = 'P'
               AND (parent_order_id is null
                OR  (order_type='G' 
                     AND parent_order_id=original_order_number))
                  AND  o.client = :ORDER_STATUS.CLIENT_NUMBER;
                  
     EXCEPTION
       WHEN OTHERS THEN
       NULL;
       END;
       
         BEGIN
             SELECT  count(*)
               INTO  :ORDER_STATUS.ERROR
               FROM  orders o
              WHERE  o.status = 'E'
                AND  (parent_order_id is null
                 OR  (order_type='G' 
                       AND parent_order_id=original_order_number))
                   AND  o.client = :ORDER_STATUS.CLIENT_NUMBER;
                   
            EXCEPTION
       WHEN OTHERS THEN
       NULL;     
        
        END;


       BEGIN
            SELECT count(*)
              INTO :ORDER_STATUS.BACK_ORDER
              FROM orders o
          WHERE o.status = 'B'
               AND (parent_order_id is null
                OR (order_type='G' 
                     AND parent_order_id=original_order_number))
                  AND o.client = :ORDER_STATUS.CLIENT_NUMBER;
                  
      EXCEPTION
       WHEN OTHERS THEN
       NULL;    
       
     END;
            
       BEGIN
            SELECT count(*)
              INTO :ORDER_STATUS.EXPEDITE
              FROM orders o,shipment_type_methods stm
             WHERE o.status in ('A','U')
         AND (o.parent_order_id is null
          OR (o.order_type = 'G'
         AND o.parent_order_id = o.original_order_number))
         AND o.client = stm.client
         AND o.shipment_class_code = stm.shipment_class_code
         AND (nvl(o.priority,'1') = '2'
          OR  stm.surcharge_amount <> 0)
                  AND  o.client = :ORDER_STATUS.CLIENT_NUMBER
          GROUP BY  o.client;
          
          EXCEPTION
       WHEN OTHERS THEN
       NULL;          
       
      END;           
       
 
       BEGIN
            SELECT count(*)
              INTO :ORDER_STATUS.STD_SHIP
              FROM  orders o,shipment_type_methods stm
             WHERE o.status in ('A','U')
         AND  (o.parent_order_id is null
          OR (o.order_type = 'G'
         AND o.parent_order_id = o.original_order_number))
         AND nvl(o.priority,'1') <> '2'
         AND o.client = stm.client 
         AND o.shipment_class_code = stm.shipment_class_code
         AND stm.surcharge_amount = 0
                  AND o.client = :ORDER_STATUS.CLIENT_NUMBER
          GROUP BY o.client;
          
      EXCEPTION
       WHEN OTHERS THEN
       NULL;
       
       END;
 
  END post_query; 
  END ORDER_COUNT_PKG;
the query that takes a long time is
SELECT count(*)
               FROM  orders o,shipment_type_methods stm
             WHERE o.status in ('A','U')
         AND  (o.parent_order_id is null
          OR (o.order_type = 'G'
         AND o.parent_order_id = o.original_order_number))
         AND nvl(o.priority,'1') <> '2'
         AND o.client = stm.client 
         AND o.shipment_class_code = stm.shipment_class_code
         AND stm.surcharge_amount = 0
           AND o.client = :CLIENT_NUMBER
          GROUP BY o.client
The version of the database is 10.2.1.0.2
SQL> alter session force parallel dml;
These are the parameters relevant for the optimizer:
SQL> show parameter user_dump_dest

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
user_dump_dest                       string      /u01/app/oracle/admin/mcgemqa/
                                                 udump
SQL> show parameter optimizer

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
optimizer_dynamic_sampling           integer     2
optimizer_features_enable            string      10.2.0.4
optimizer_index_caching              integer     0
optimizer_index_cost_adj             integer     100
optimizer_mode                       string      ALL_ROWS
optimizer_secure_view_merging        boolean     TRUE
SQL> show parameter db_file_multi

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
db_file_multiblock_read_count        integer     16
SQL> show parameter db_block_size

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
db_block_size                        integer     8192
SQL> show parameter cursor_sharing

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
cursor_sharing                       string      EXACT
Here is the output of the EXPLAIN PLAN of:
SQL> explain plan for
  2  SELECT count(*)
  3         FROM  orders o,shipment_type_methods stm
  4       WHERE o.status in ('A','U')
  5           AND  (o.parent_order_id is null
  6            OR (o.order_type = 'G'
  7           AND o.parent_order_id = o.original_order_number))
  8           AND nvl(o.priority,'1') <> '2'
  9           AND o.client = stm.client 
 10           AND o.shipment_class_code = stm.shipment_class_code
 11           AND stm.surcharge_amount = 0
 12     AND o.client = :CLIENT_NUMBER
 13    GROUP BY o.client
 14  /

Explained.

Elapsed: 00:00:00.12
SQL> select * from table(dbms_xplan.display);

PLAN_TABLE_OUTPUT
----------------------------------------------------------------------------------------------------
Plan hash value: 559278019

----------------------------------------------------------------------------------------------------
| Id  | Operation                      | Name                    | Rows  | Bytes | Cost (%CPU)| Time     |
----------------------------------------------------------------------------------------------------
|   0 | SELECT STATEMENT               |                         |     1 |    35 | 46764   (3)| 00:09:22 |
|   1 |  SORT GROUP BY NOSORT          |                         |     1 |    35 | 46764   (3)| 00:09:22 |
|*  2 |   TABLE ACCESS BY INDEX ROWID  | ORDERS                  |   175K|  3431K| 25979   (3)| 00:05:12 |
|   3 |    NESTED LOOPS                |                         | 25300 |   864K| 46764   (3)| 00:09:22 |
|*  4 |     TABLE ACCESS BY INDEX ROWID| SHIPMENT_TYPE_METHODS   |     1 |    15 |     2   (0)| 00:00
|*  5 |      INDEX RANGE SCAN          | U_SHIPMENT_TYPE_METHODS |     2 |       |     1   (0)| 00:00:01 |
|*  6 |     INDEX RANGE SCAN           | ORDERS_ORDER_DATE       |   176K|       |  2371   (8)| 00:00:29 |
----------------------------------------------------------------------------------------------------

Predicate Information (identified by operation id):
---------------------------------------------------

   2 - filter(("O"."PARENT_ORDER_ID" IS NULL OR "O"."ORDER_TYPE"='G' AND
              "O"."PARENT_ORDER_ID"=TO_NUMBER("O"."ORIGINAL_ORDER_NUMBER")) AND NVL("O"."PRIORITY",'1')<>'2
              AND "O"."SHIPMENT_CLASS_CODE"="STM"."SHIPMENT_CLASS_CODE")
   4 - filter("STM"."SURCHARGE_AMOUNT"=0)
   5 - access("STM"."CLIENT"=:CLIENT_NUMBER)
   6 - access("O"."CLIENT"=:CLIENT_NUMBER)
       filter("O"."STATUS"='A' OR "O"."STATUS"='U')

24 rows selected.

Elapsed: 00:00:00.86
SQL> rollback;

Rollback complete.

Elapsed: 00:00:00.07
Here is the output of SQL * Plus AUTOTRACE, including CALENDAR information:
SQL> SELECT count(*)
  2         FROM  orders o,shipment_type_methods stm
  3       WHERE o.status in ('A','U')
  4           AND  (o.parent_order_id is null
  5            OR (o.order_type = 'G'
  6           AND o.parent_order_id = o.original_order_number))
  7           AND nvl(o.priority,'1') <> '2'
  8           AND o.client = stm.client 
  9           AND o.shipment_class_code = stm.shipment_class_code
 10           AND stm.surcharge_amount = 0
 11     AND o.client = :CLIENT_NUMBER
 12    GROUP BY o.client
 13  /

Elapsed: 00:00:03.09

Execution Plan
----------------------------------------------------------
Plan hash value: 559278019

----------------------------------------------------------------------------------------------------
| Id  | Operation                      | Name                    | Rows  | Bytes | Cost (%CPU)| Time     |
----------------------------------------------------------------------------------------------------
|   0 | SELECT STATEMENT               |                         |     1 |    35 | 46764   (3)| 00:09:22 |
|   1 |  SORT GROUP BY NOSORT          |                         |     1 |    35 | 46764   (3)| 00:09:22 |
|*  2 |   TABLE ACCESS BY INDEX ROWID  | ORDERS                  |   175K|  3431K| 25979   (3)| 00:05:12 |
|   3 |    NESTED LOOPS                |                         | 25300 |   864K| 46764   (3)| 00:09:22 |
|*  4 |     TABLE ACCESS BY INDEX ROWID| SHIPMENT_TYPE_METHODS   |     1 |    15 |     2   (0)| 00:00
|*  5 |      INDEX RANGE SCAN          | U_SHIPMENT_TYPE_METHODS |     2 |       |     1   (0)| 00:00:01 |
|*  6 |     INDEX RANGE SCAN           | ORDERS_ORDER_DATE       |   176K|       |  2371   (8)| 00:00:29 |
----------------------------------------------------------------------------------------------------

Predicate Information (identified by operation id):
---------------------------------------------------

   2 - filter(("O"."PARENT_ORDER_ID" IS NULL OR "O"."ORDER_TYPE"='G' AND
              "O"."PARENT_ORDER_ID"=TO_NUMBER("O"."ORIGINAL_ORDER_NUMBER")) AND NVL("O"."PRIORITY",'1')<>'2
              AND "O"."SHIPMENT_CLASS_CODE"="STM"."SHIPMENT_CLASS_CODE")
   4 - filter("STM"."SURCHARGE_AMOUNT"=0)
   5 - access("STM"."CLIENT"=:CLIENT_NUMBER)
   6 - access("O"."CLIENT"=:CLIENT_NUMBER)
       filter("O"."STATUS"='A' OR "O"."STATUS"='U')


Statistics
----------------------------------------------------------
         55  recursive calls
          0  db block gets
       7045  consistent gets
          0  physical reads
          0  redo size
        206  bytes sent via SQL*Net to client
        238  bytes received via SQL*Net from client
          2  SQL*Net roundtrips to/from client
          0  sorts (memory)
          0  sorts (disk)
          1  rows processed

SQL> disconnect
Disconnected from Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL>
The TKPROF output for that statement looks like the following:
SELECT count(*)
       FROM  orders o,shipment_type_methods stm
     WHERE o.status in ('A','U')
         AND  (o.parent_order_id is null
          OR (o.order_type = 'G'
         AND o.parent_order_id = o.original_order_number))
         AND nvl(o.priority,'1') <> '2'
         AND o.client = stm.client
         AND o.shipment_class_code = stm.shipment_class_code
         AND stm.surcharge_amount = 0
   AND o.client = :CLIENT_NUMBER
  GROUP BY o.client

call     count       cpu    elapsed       disk      query    current        rows
------- ------  -------- ---------- ---------- ---------- ----------  ----------
Parse        1      0.01       0.00          0          0          0           0
Execute      1      0.04       0.04          0          0          0           0
Fetch        2      2.96       2.91          0       7039          0           1
------- ------  -------- ---------- ---------- ---------- ----------  ----------
total        4      3.01       2.95          0       7039          0           1

Misses in library cache during parse: 1
Misses in library cache during execute: 1
Optimizer mode: ALL_ROWS
Parsing user id: 95  

Rows     Row Source Operation
-------  ---------------------------------------------------
      1  SORT GROUP BY NOSORT (cr=7039 pr=0 pw=0 time=2913701 us)
     91   TABLE ACCESS BY INDEX ROWID ORDERS (cr=7039 pr=0 pw=0 time=261997906 us)
     93    NESTED LOOPS  (cr=6976 pr=0 pw=0 time=20740 us)
      1     TABLE ACCESS BY INDEX ROWID SHIPMENT_TYPE_METHODS (cr=2 pr=0 pw=0 time=208 us)
      3      INDEX RANGE SCAN U_SHIPMENT_TYPE_METHODS (cr=1 pr=0 pw=0 time=88 us)(object id 81957)
     91     INDEX RANGE SCAN ORDERS_ORDER_DATE (cr=6974 pr=0 pw=0 time=70 us)(object id 81547)


Elapsed times include waiting on following events:
  Event waited on                             Times   Max. Wait  Total Waited
  ----------------------------------------   Waited  ----------  ------------
  SQL*Net message to client                       2        0.00          0.00
  SQL*Net message from client                     2        0.02          0.02
********************************************************************************
DBMS_XPLAN. Output DISPLAY_CURSOR:
SQL> variable CLIENT_NUMBER varchar2(20) 
SQL> exec :CLIENT_NUMBER := '14'

PL/SQL procedure successfully completed.

Elapsed: 00:00:00.06
SQL> SELECT /*+ gather_plan_statistics */ count(*)
  2         FROM  orders o,shipment_type_methods stm
  3       WHERE o.status in ('A','U')
  4           AND  (o.parent_order_id is null
  5            OR (o.order_type = 'G'
  6           AND o.parent_order_id = o.original_order_number))
  7           AND nvl(o.priority,'1') <> '2'
  8           AND o.client = stm.client 
  9           AND o.shipment_class_code = stm.shipment_class_code
 10           AND stm.surcharge_amount = 0
 11     AND o.client = :CLIENT_NUMBER
 12    GROUP BY o.client
 13  /

  COUNT(*)
----------
        91

Elapsed: 00:00:02.85
SQL> set termout on
SQL> select * from table(dbms_xplan.display_cursor(null, null, 'ALLSTATS LAST'));

PLAN_TABLE_OUTPUT
----------------------------------------------------------------------------------------------------
SQL_ID  4nfj368y8w6a3, child number 0
-------------------------------------
SELECT /*+ gather_plan_statistics */ count(*)        FROM  orders o,shipment_type_methods stm      WHERE
o.status in ('A','U')          AND  (o.parent_order_id is null           OR (o.order_type = 'G'
AND o.parent_order_id = o.original_order_number))          AND nvl(o.priority,'1') <> '2'          AND
o.client = stm.client          AND o.shipment_class_code = stm.shipment_class_code          AND
stm.surcharge_amount = 0    AND o.client = :CLIENT_NUMBER   GROUP BY o.client

Plan hash value: 559278019

----------------------------------------------------------------------------------------------------
| Id  | Operation                      | Name                    | Starts | E-Rows | A-Rows |   A-Time   | Buffers |
----------------------------------------------------------------------------------------------------
|   1 |  SORT GROUP BY NOSORT          |                         |      1 |      1 |      1 |00:00:02.63 |    7039 |
|*  2 |   TABLE ACCESS BY INDEX ROWID  | ORDERS                  |      1 |    175K|     91 |00:03:56.87 |    7039 |
|   3 |    NESTED LOOPS                |                         |      1 |  25300 |     93 |00:00:00.02 |    6976 |
|*  4 |     TABLE ACCESS BY INDEX ROWID| SHIPMENT_TYPE_METHODS   |      1 |      1 |      1 |00:00:00.01 |       2 |
|*  5 |      INDEX RANGE SCAN          | U_SHIPMENT_TYPE_METHODS |      1 |      2 |      3 |00:00:00.01 |       1 |
|*  6 |     INDEX RANGE SCAN           | ORDERS_ORDER_DATE       |      1 |    176K|     91 |00:00:00.01 |    6974 |
----------------------------------------------------------------------------------------------------

Predicate Information (identified by operation id):
---------------------------------------------------

   2 - filter((("O"."PARENT_ORDER_ID" IS NULL OR ("O"."ORDER_TYPE"='G' AND
              "O"."PARENT_ORDER_ID"=TO_NUMBER("O"."ORIGINAL_ORDER_NUMBER"))) AND NVL("O"."PRIORITY",'1')<>'
              "O"."SHIPMENT_CLASS_CODE"="STM"."SHIPMENT_CLASS_CODE"))
   4 - filter("STM"."SURCHARGE_AMOUNT"=0)
   5 - access("STM"."CLIENT"=:CLIENT_NUMBER)
   6 - access("O"."CLIENT"=:CLIENT_NUMBER)
       filter(("O"."STATUS"='A' OR "O"."STATUS"='U'))


32 rows selected.

Elapsed: 00:00:01.30
SQL>
I can't wait for suggestions to improve the performance of this statement.


Thank you
Sandy

OK Sandy, progress. It is now 'down' to 30 minutes just because you are only running a query in this form, not five or three, but it's still about 29 minutes and 57 seconds longer that he should take. You will see results of the above query you posted, that all WAIT events are ' SQL * Net client message ', which means that the database server is waiting for communication from the application server. Some massive waits, one of 2 290 696 seconds, which is equal to 26 days! It could be someone who has logged, but now gone on vacation. Recognize a name of machine, where it is the Ap Server?

But you know now that your query will be executed quickly, and I'm not sure what OEM recommended implementation plan, he could only use a Scan of full Table instead of an analysis of index range on orders, which would make sense since you are now picking up five statuses of command where before you were only picking up 3 or 2 in each SELECTION. So, is not a problem per se database, it is a problem of the Ap server and from there you could better raise the problem in this subforum: Business Intelligence Applications and it may well be interesting to try that I proposed yesterday to clone among other forms of 'good' and just Exchange procedures. Good luck with it!

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