Tuning The Query By Using Xplain Plan

Question

Hi Guys,
This particular query is taking a long time in the production reported by The SPE team .
SELECT
CASE
WHEN TPJRCSHDRW1.CASH_DRAWER_ID = 5000555
THEN 1
WHEN TPTRJO1.OTHER_CASH_DRAWER_ID = 5000555
THEN 2
END TRADE_TYPE,
TPDECO1.DENOMINATION_COUNT_ID,
TPDECO1.DENOMINATION_CATEGORY,
TPDECO1.DENOMINATION_VALUE,
TPDECO1.DENOMINATION_COUNT,
TPDECO1.DENOMINATION_TYPE,
TPDECO1.DENOMINATION_NAME,
TPTRJO1.TRANSACTION_ID,
TPTRJO1.TOTAL_VALUE,
TPTRJO1.TOTAL_VALUE_CCODE,
TPTRJO1.JOURNAL_ENTRY_ID,
TPJRCSHDRW1.CASH_DRAWER_ID,
TPTRJO1.OTHER_CASH_DRAWER_ID
FROM TRANSACTION_JOURNAL TPTRJO1
INNER JOIN JOURNAL_CASH_DRAWER TPJRCSHDRW1
ON TPTRJO1.JOURNAL_ENTRY_ID = TPJRCSHDRW1.JOURNAL_ENTRY_ID
LEFT OUTER JOIN DENOMINATION_COUNT TPDECO1
ON TPDECO1.JOURNAL_ENTRY_ID = TPJRCSHDRW1.JOURNAL_ENTRY_ID
WHERE ((TPJRCSHDRW1.CASH_DRAWER_ID = 5000555)
OR (TPTRJO1.OTHER_CASH_DRAWER_ID = 5000555))
AND (TPTRJO1.TRANSACTION_ID IN (563,590,1362,605,562,589,604))
AND (TPTRJO1.STATUS NOT IN ('I','V','R'))
AND ((TPTRJO1.REVERSED_BY) IS NULL) AND (TPJRCSHDRW1.CASH_DRAWER_DATE >= to_date('2009-07-24','yyyy-mm-dd') )
AND (TPTRJO1.TOTAL_VALUE <> 0)
AND ((TPTRJO1.OFFSET_ID) IS NULL);
When I am analysing the query by xplain_plan , I am getting this plan
Plan hash value: 3371088438
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
| 0 | SELECT STATEMENT | | 36557 | 3391K| 1445 (1)| 00:00:18 |
| 1 | CONCATENATION | | | | | |
| 2 | NESTED LOOPS OUTER | | 1 | 95 | 3 (0)| 00:00:01 |
| 3 | NESTED LOOPS | | 1 | 63 | 2 (0)| 00:00:01 |
|* 4 | TABLE ACCESS BY INDEX ROWID| TRANSACTION_JOURNAL | 1 | 40 | 1 (0)| 00:00:01 |
|* 5 | INDEX RANGE SCAN | I26_TRANSACTION_JOURNAL | 1 | | 1 (0)| 00:00:01 |
|* 6 | TABLE ACCESS BY INDEX ROWID| JOURNAL_CASH_DRAWER | 1 | 23 | 1 (0)| 00:00:01 |
|* 7 | INDEX RANGE SCAN | PKC_JOURNAL_CASH_D | 1 | | 1 (0)| 00:00:01 |
| 8 | TABLE ACCESS BY INDEX ROWID | DENOMINATION_COUNT | 12 | 384 | 1 (0)| 00:00:01 |
|* 9 | INDEX RANGE SCAN | PKC_DENOMINATION_COUNT | 20 | | 1 (0)| 00:00:01 |
| 10 | NESTED LOOPS OUTER | | 36556 | 3391K| 1442 (1)| 00:00:18 |
| 11 | NESTED LOOPS | | 1817 | 111K| 715 (0)| 00:00:09 |
| 12 | TABLE ACCESS BY INDEX ROWID| JOURNAL_CASH_DRAWER | 1817 | 41791 | 351 (0)| 00:00:05 |
|* 13 | INDEX RANGE SCAN | SPE099_JOURNALCASHDRWR | 1817 | | 7 (0)| 00:00:01 |
|* 14 | TABLE ACCESS BY INDEX ROWID| TRANSACTION_JOURNAL | 1 | 40 | 1 (0)| 00:00:01 |
|* 15 | INDEX UNIQUE SCAN | PKC_TRANSACTION_JOURNAL | 1 | | 1 (0)| 00:00:01 |
| 16 | TABLE ACCESS BY INDEX ROWID | DENOMINATION_COUNT | 20 | 640 | 1 (0)| 00:00:01 |
|* 17 | INDEX RANGE SCAN | PKC_DENOMINATION_COUNT | 20 | | 1 (0)| 00:00:01 |
Predicate Information (identified by operation id):
4 - filter("TPTRJO1"."TOTAL_VALUE"<>0 AND "TPTRJO1"."REVERSED_BY" IS NULL AND
"TPTRJO1"."OFFSET_ID" IS NULL)
5 - access("TPTRJO1"."OTHER_CASH_DRAWER_ID"=5000555)
filter("TPTRJO1"."STATUS"<>U'I' AND "TPTRJO1"."STATUS"<>U'V' AND "TPTRJO1"."STATUS"<>U'R'
AND ("TPTRJO1"."TRANSACTION_ID"=562 OR "TPTRJO1"."TRANSACTION_ID"=563 OR
"TPTRJO1"."TRANSACTION_ID"=589 OR "TPTRJO1"."TRANSACTION_ID"=590 OR
"TPTRJO1"."TRANSACTION_ID"=604 OR "TPTRJO1"."TRANSACTION_ID"=605 OR
"TPTRJO1"."TRANSACTION_ID"=1362))
6 - filter("TPJRCSHDRW1"."DRAWER_SEQ" IS NOT NULL)
7 - access("TPTRJO1"."JOURNAL_ENTRY_ID"="TPJRCSHDRW1"."JOURNAL_ENTRY_ID" AND
"TPJRCSHDRW1"."CASH_DRAWER_DATE">=TO_DATE(' 2009-07-24 00:00:00', 'syyyy-mm-dd hh24:mi:ss'))
filter("TPJRCSHDRW1"."CASH_DRAWER_DATE">=TO_DATE(' 2009-07-24 00:00:00', 'syyyy-mm-dd
hh24:mi:ss'))
9 - access("TPDECO1"."JOURNAL_ENTRY_ID"(+)="TPJRCSHDRW1"."JOURNAL_ENTRY_ID")
13 - access("TPJRCSHDRW1"."CASH_DRAWER_ID"=5000555 AND
"TPJRCSHDRW1"."CASH_DRAWER_DATE">=TO_DATE(' 2009-07-24 00:00:00', 'syyyy-mm-dd hh24:mi:ss'))
filter("TPJRCSHDRW1"."DRAWER_SEQ" IS NOT NULL)
14 - filter("TPTRJO1"."STATUS"<>U'I' AND "TPTRJO1"."STATUS"<>U'V' AND "TPTRJO1"."STATUS"<>U'R'
AND ("TPTRJO1"."TRANSACTION_ID"=562 OR "TPTRJO1"."TRANSACTION_ID"=563 OR
"TPTRJO1"."TRANSACTION_ID"=589 OR "TPTRJO1"."TRANSACTION_ID"=590 OR
"TPTRJO1"."TRANSACTION_ID"=604 OR "TPTRJO1"."TRANSACTION_ID"=605 OR
"TPTRJO1"."TRANSACTION_ID"=1362) AND "TPTRJO1"."TOTAL_VALUE"<>0 AND "TPTRJO1"."REVERSED_BY" IS
NULL AND "TPTRJO1"."OFFSET_ID" IS NULL AND LNNVL("TPTRJO1"."OTHER_CASH_DRAWER_ID"=5000555))
15 - access("TPTRJO1"."JOURNAL_ENTRY_ID"="TPJRCSHDRW1"."JOURNAL_ENTRY_ID")
17 - access("TPDECO1"."JOURNAL_ENTRY_ID"(+)="TPJRCSHDRW1"."JOURNAL_ENTRY_ID")
--There is an index  SPE099_JOURNALCASHDRWR which is on
CASH_DRAWER_ID
CASH_DRAWER_DATE
DRAWER_SEQ
But I am wondering why there is TABLE ACCESS BY INDEX ROWID| JOURNAL_CASH_DRAWER when this col is availabe in the indexed table .
Can anyone Please suggest what improvements can be done on this query.WIll change in the table order will have some performance boost.
Please suggest ..
Thanks
Prafulla

Answer 1

Could you please execute your query reported here below (pay attention to the gather_plan_statistics hint)
select /*+ gather_plan_statistics */
      case
        when tpjrcshdrw1.cash_drawer_id = 5000555
        then 1
        when tptrjo1.other_cash_drawer_id = 5000555
        then 2
      end trade_type,
      tpdeco1.denomination_count_id,
      tpdeco1.denomination_category,
      tpdeco1.denomination_value,
      tpdeco1.denomination_count,
      tpdeco1.denomination_type,
      tpdeco1.denomination_name,
      tptrjo1.transaction_id,
      tptrjo1.total_value,
      tptrjo1.total_value_ccode,
      tptrjo1.journal_entry_id,
      tpjrcshdrw1.cash_drawer_id,
      tptrjo1.other_cash_drawer_id
from
      transaction_journal tptrjo1
inner join journal_cash_drawer tpjrcshdrw1
        on tptrjo1.journal_entry_id = tpjrcshdrw1.journal_entry_id
left outer join denomination_count tpdeco1
        on tpdeco1.journal_entry_id        = tpjrcshdrw1.journal_entry_id
where ((tpjrcshdrw1.cash_drawer_id = 5000555)
      or (tptrjo1.other_cash_drawer_id   = 5000555))
and (tptrjo1.transaction_id       in (563,590,1362,605,562,589,604))
and (tptrjo1.status not           in ('I','V','R'))
and ((tptrjo1.reversed_by)        is null)
and (tpjrcshdrw1.cash_drawer_date >= to_date('2009-07-24','yyyy-mm-dd') )
and (tptrjo1.total_value 0)
and ((tptrjo1.offset_id) is null);and post the formatted explain plan you will get using
select * from table(dbms_xplan.display_cursor(null,null,'ALLSTATS LAST'));IS one of the following indexed columns NULLABLE?
CASH_DRAWER_ID
CASH_DRAWER_DATE
DRAWER_SEQ
Best Regards
Mohamed Houri
www.hourim.wordpress.com
Edited by: Mohamed Houri on 14-juin-2012 7:07