Query to calculate time
hi all,
i have 2 udf field of type 'Time', StartTime and EndTime in order to catch the info of some process time.
again 2 fields of date in order to catch the range of days for the process goes.
like the following
Startdate | Enddate | Starttime | Endtime
15/04/09--| 16/04/09| 9:30- | ---14:00
Now i need a query to calculate the time differences in hrs. like the process runs thro 4 n half hrs a day and totally as per the table value the total run process time is 9 hrs.
How to bring out in query any one plz help...
Thank you so much,
Hi Yatsea, sorry tis time too its not reteiving correct answer, the values i gave over here is jus for example. but in real there may be many different values. So will be useful in case of providing the query taking in the field names plz.
i hav a work around working on . will write here, plz guide me to correct the query to get me correct answer.
in order to find the specific hrs between start and end time for 2 days,
1. can find first total days within start and end date (EndDate-StartDate) + 1 = 2
2. 2nd find the hrs between start and end time (EndTime-StartTime) = 4.30 hrs
3. after tht should multply the 2 values 2 * 4.30 = 8.60 which should round as 9 hrs
Select (datediff(day,enddate,startdate)+1) * (endtime-starttime)
will it help..? its not giving correct answer. may gone wrong wit time format. but this concept will give correct anawer i hope...
PLz...help me getting solution.
Edited by: New User on Apr 16, 2009 3:52 PM
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Query to calculate time frames
hello,
id like to write a query that will calculate time frames ;
my source table looks like this:
company category date
ORACLE A 1/01/2012
ORACLE A 2/01/2012
ORACLE B 3/01/2012
ORACLE C 4/01/2012
IBM A 1/01/2012
IBM A 2/01/2012
IBM A 3/01/2012
IBM A 4/01/2012my desired result:
company category from to
ORACLE A 1/01/2012 2/01/2012
ORACLE B 3/01/2012 3/01/2012
ORACLE C 4/01/2012 31/12/2999
IBM A 1/01/2012 31/12/2999can you please guide me with use of which functions i can achieve that?
id appreciate any tips
thank you
rgds
Edited by: UserMB on Jan 11, 2012 5:14 PMOne way...
ME_XE?with t as
2 (
3 select 'ORACLE' col1, 'A' col2, to_date('1/01/2012', 'dd/mm/yyyy') col3
4 from dual
5 union all
6 select 'ORACLE', 'A', to_date('2/01/2012', 'dd/mm/yyyy')
7 from dual
8 union all
9 select 'ORACLE', 'B', to_date('3/01/2012', 'dd/mm/yyyy')
10 from dual
11 union all
12 select 'ORACLE', 'C', to_date('4/01/2012', 'dd/mm/yyyy')
13 from dual
14 union all
15 select 'IBM', 'A', to_date('1/01/2012', 'dd/mm/yyyy')
16 from dual
17 union all
18 select 'IBM', 'A', to_date('2/01/2012', 'dd/mm/yyyy')
19 from dual
20 union all
21 select 'IBM', 'A', to_date('3/01/2012', 'dd/mm/yyyy')
22 from dual
23 union all
24 select 'IBM', 'A', to_date('4/01/2012', 'dd/mm/yyyy') from dual
25 )
26 select
27 col1, col2, min(col3), case when max(col3) = max_company_date then to_date('31/12/2999','dd/mm/yyyy') else max(col3) end
28 from
29 (
30 select col1, col2, col3, max(col3) over (partition by col1) as max_company_date
31 from t
32 )
33 group by col1, col2, max_company_date;
COL1 COL MIN(COL3) CASEWHENMAX(COL3)=MAX_COMP
ORACLE B 03-JAN-2012 12 00:00 03-JAN-2012 12 00:00
ORACLE A 01-JAN-2012 12 00:00 02-JAN-2012 12 00:00
ORACLE C 04-JAN-2012 12 00:00 31-DEC-2999 12 00:00
IBM A 01-JAN-2012 12 00:00 31-DEC-2999 12 00:00
4 rows selected.
Elapsed: 00:00:00.01
ME_XE? -
Need the query to calculate the time taken to excute it.
hi all,
i need the query to calculate the time taken to excute it.
for ex:
select * from emp;
how much time it will take to give o/p
Thanks in advance
satyaJust to add to what was said - the execution can each time be DIFFERENT as the factors that governs performance are NOT CONSTANT.
If Oracle has no idea how long the query is going to take before executing it, then how can you and your code know?
Oracle's CBO estimates the cost (expense) of the query. This is an indication of how expensive a query is - and the more expensive the query, the more resources need to be used, the longer the query will take. The less expensive the query, the fewer resources it need, the faster it will take.
And that is it. How fast or how slow? Oracle does not know. How much faster a query with a cost of 10,000 versus a query with a cost of 1? Oracle does not know.
Why? Because the platform is not constant. Just what data is at this exact moment in the db buffer cache? Just how much CPU capacity is available for the new few seconds? Just what will the sustained throughput be of the I/O subsystem and channels for the next minute? Just how many memory pages need to be swapped between cache and memory? Etc. etc.
All these factors change every single second. So forget about attempting to accurately calculate up-front the time it will take for a query. IT IS NOT POSSIBLE. -
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Hi Andrew,
Part A:
I've done some restating of the question, and distributed the calculations among several fields, not all of which need to be included on the visible layout. Other than formatting the Date fields and moving the 'Completed Date' field and its label, I've left this in the default "Layout 1" produced by AppleWorks.
Field List:
Priority: Popup menu with six items: 00, J, D, 1, 2, 3 Defaults to 00
TL (time limit in months): Calculation: CHOOSE('Priority',0,1,3,4,6,12)
Received: Date. Option: Automatically insert today's date (ie. Date Record created) (may be edited)
Target Date: Calculation:
DATE(YEAR('Received')+INT(MONTH('Received')+'TL')/12,MOD(MONTH('Received')+'TL', 12),DAY('Received'))
Remaining (Days): Calculation: INT('Target Date'+1-NOW()) (see revision below)
Completed: Checkbox. Set default value to Unchecked.
Completed Date: Date: Entered manually
OnTarget: Calculation: IF('Completed',IF('Completed Date'<'Target Date',"On Target","Over"),IF(INT(NOW())>'Target Date',"Over","On Target"))
The On Target field shows the current status of the case while still open, and the state on the closing date when it was closed.
Having done that, I was unhappy with the Remaining field continuing to calculate an ever larger negative number after the case had been closed. Hence this revision below:
Remaining: Calculation: IF('Completed','Target Date'-'Completed Date',INT('Target Date'+1-NOW()))
Shows the number of days remaining while the case is open, the days remaining at completion if the case has been marked Completed and the completion date entered.
Rsults (and some further formatting of the Layout) below.
Part B:
You will need Subsummary parts when sorted on Completed and on On Target. Fields can appear on a Layout only once, so each subsummary part will need a separate Summary type field for each field to be summarized.
Regards,
Barry -
Approach to tune a query in short time
Hi All,
Oracle 10g I know this question is asked number of times and there are many good replies to them.
But I just want to know how to approach a completely new query ( like the task given to me to fine tume a query in 1 day when I dont have even the slightest idea about how to proceed) if the timeline is very stringent and by just looking at the explain plan, you have to take the decision.
I am just posting my query here and what I am looking for is some lead on how to identify the congetion point which is where this query takes long time ( in my case some 15 mins as reported to me)
select
"LEGAL ENTITY",
"Legal Entity Description",
"Cluster",
"Sub_Cluster",
"Account",
rownum,
"Moody_Rating",
"Process_Date",
"Merge_Description",
rownum,
"Merge_Description",
"is_id_ic",
"is_n",
"cusip",
"isin",
"credit_spread_PV01",
"amount",
"Market_Value",
"Currency",
"Sensitivity_Type",
"maturity_Date",
"Exception_Flag",
"Base_Security_Id",
DECODE(sign("Market_Value"),-1,DeCode(SigN("Recovery"),-1,"Recovery",('-'||"Recovery")), ABS("Recovery")) as "Recovery"
from
select
le.name "LEGAL ENTITY",
le.display_name "Legal Entity Description",
mn4.display_name "Cluster",
mn3.display_name "Sub_Cluster",
bookname.display_name "Account",
(SELECT RATING_NAME
FROM moody_rating
where moody_rating_id = i.moody_rating_id) "Moody_Rating",
to_char(to_date(:v_cob_date,'DD-MM-YY'),'YYYYMMDD') "Process_Date",
ss.issuer "Merge_Description",
PART.MARS_ISSUER "is_id_ic",
PART.PARTICIPANT_NAME "is_n",
NULL "cusip",
NULL "isin",
NULL "credit_spread_PV01",
NULL "amount",
sum(mtmsens.sensitivity_value) "Market_Value",
(SELECT distinct cc.CCY
FROM legacy_country CC
INNER JOIN MARSNODE MN ON CC.countryisocode = MN.NAME
and mn.close_date is null
INNER JOIN MARSNODETYPE MNT ON MN.TYPE_ID =
MNT.NODE_TYPE_ID
AND MNT.NAME = 'COUNTRY'
and mnt.close_date is null
where MN.NODE_ID = part.country_domicile_id
and cc.begin_cob_date <= :v_cob_date
and cc.end_cob_date > :v_cob_date
and rownum < 2) "Currency",
'CREDITSPREADMARKETVALUE' "Sensitivity_Type",
NULL "maturity_Date",
NULL "Exception_Flag",
NULL "Base_Security_Id",
sum(ss.sensitivity_value) "Recovery"
from staging_position sp
left JOIN position p on (
p.feed_instance_id = sp.feed_instance_id
AND p.feed_row_id = sp.feed_row_id)
left JOIN staging_instrument si on (si.feed_instance_id =
sp.feed_instance_id AND
si.position_key =
sp.position_key)
left join book b on (b.book_id = p.book_id and
b.begin_cob_date <= :v_cob_date and
b.end_cob_date > :v_cob_date)
left join marsnode bk on (b.book_id = bk.node_id and
bk.close_date is null)
left join marsnode le on (b.leg_ent_id = le.node_id and
le.close_date is null)
left join marsnode bookname on (bookname.node_id = p.book_id and
bookname.close_date is null)
left join marsnodelink mnl on p.book_id = mnl.node_id
and :v_bus_org_hier_id =
mnl.hierarchy_id
and mnl.close_date is null
and :v_cob_date >= mnl.begin_cob_date
and :v_cob_date < mnl.end_cob_date
left join marsnode mn on mn.node_id = mnl.parent_id
and mn.close_date is null
left join marsnodelink mnl2 on mn.node_id = mnl2.node_id
and :v_bus_org_hier_id =
mnl2.hierarchy_id
and mnl2.close_date is null
and :v_cob_date >= mnl2.begin_cob_date
and :v_cob_date < mnl2.end_cob_date
left join marsnode mn2 on mn2.node_id = mnl2.parent_id
and mn2.close_date is null
left join marsnodelink mnl3 on mn2.node_id = mnl3.node_id
and :v_bus_org_hier_id =
mnl3.hierarchy_id
and mnl3.close_date is null
and :v_cob_date >= mnl3.begin_cob_date
and :v_cob_date < mnl3.end_cob_date
left join marsnode mn3 on mn3.node_id = mnl3.parent_id
and mn3.close_date is null
left join marsnodelink mnl4 on mn3.node_id = mnl4.node_id
and :v_bus_org_hier_id =
mnl4.hierarchy_id
and mnl4.close_date is null
and :v_cob_date >= mnl4.begin_cob_date
and :v_cob_date < mnl4.end_cob_date
left join marsnode mn4 on mn4.node_id = mnl4.parent_id
and mn4.close_date is null
--sensitivity data
left JOIN STAGING_SENSITIVITY ss ON (ss.FEED_INSTANCE_ID =
sp.FEED_INSTANCE_ID AND
ss.FEED_ROW_ID =
sp.FEED_ROW_ID)
--sensitivity data
left JOIN STAGING_SENSITIVITY mtmsens ON (mtmsens.FEED_INSTANCE_ID =
sp.FEED_INSTANCE_ID AND
mtmsens.FEED_ROW_ID =
sp.FEED_ROW_ID)
LEFT join xref_domain_value_map XREF on (XREF.Src_Value =
ss.issuer and
XREF.close_action_id is null and
XREF.Begin_Cob_Date <=
:v_cob_date and
XREF.End_Cob_Date >
:v_cob_date AND
xref.domain_map_id = 601 AND
xref.source_system_id = 307 AND xref.ISSUE_ID is not null)
Left join ISSUE i on (i.issue_id = xref.issue_id)
LEFT join participant PART ON (PART.PARTICIPANT_ID =
XREF.TGT_VALUE and
PART.Close_Action_Id is null and
PART.Begin_Cob_Date <= :v_cob_date and
PART.End_Cob_Date > :v_cob_date)
left join moody_rating RATING on (rating.moody_rating_id =
i.MOODY_RATING_ID)
where sp.feed_instance_id in
(select fbi.feed_instance_id
from feed_book_status fbi ,
feed_instance fi
where fbi.cob_date = :v_cob_date
and fbi.feed_instance_id = fi.feed_instance_id
and fi.feed_id in (
select feed_id from feed_group_xref where feed_group_id in (
select feed_group_id from feed_group where description like 'CDO Feeds')
and close_action_id is null
and sp.Feed_Row_Status_Id = 1
and ss.sensitivity_type = 'CREDITSPREADDEFAULT'
and mtmsens.sensitivity_type = 'MTMVALUE'
and le.name='161'
group by le.name,
le.display_name,
mn3.display_name,
mn4.display_name,
mn.display_name,
i.moody_rating_id,
ss.issuer,
PART.MARS_ISSUER,
PART.PARTICIPANT_NAME,
sp.feed_instance_id,
part.country_domicile_id,
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TABLE ACCESS BY INDEX ROWID Object owner=MARS Object name=MOODY_RATING Cost=1 Cardinality=1 Bytes=9
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HASH UNIQUE Cost=77 Cardinality=1 Bytes=488
COUNT STOPKEY
HASH JOIN Cost=76 Cardinality=1 Bytes=488
NESTED LOOPS Cost=68 Cardinality=1 Bytes=460
HASH JOIN Cost=66 Cardinality=1 Bytes=450
HASH JOIN Cost=59 Cardinality=1 Bytes=412
NESTED LOOPS Cost=51 Cardinality=1 Bytes=402
HASH JOIN Cost=49 Cardinality=1 Bytes=392
NESTED LOOPS Cost=42 Cardinality=1 Bytes=359
NESTED LOOPS Cost=40 Cardinality=1 Bytes=349
NESTED LOOPS Cost=37 Cardinality=1 Bytes=300
NESTED LOOPS Cost=34 Cardinality=1 Bytes=251
HASH JOIN Cost=32 Cardinality=1 Bytes=241
TABLE ACCESS BY INDEX ROWID Object owner=MARS Object name=MARSNODE Cost=3 Cardinality=1 Bytes=27
NESTED LOOPS Cost=24 Cardinality=1 Bytes=231
NESTED LOOPS Cost=21 Cardinality=1 Bytes=204
NESTED LOOPS Cost=18 Cardinality=1 Bytes=171
NESTED LOOPS Cost=16 Cardinality=1 Bytes=136
NESTED LOOPS Cost=13 Cardinality=1 Bytes=86
NESTED LOOPS Cost=10 Cardinality=1 Bytes=37
VIEW Object owner=MARS Cost=7 Cardinality=1 Bytes=10
FILTER
CONNECT BY WITH FILTERING
TABLE ACCESS BY INDEX ROWID Object owner=MARS Object name=MARSNODELINK
INDEX RANGE SCAN Object owner=MARS Object name=FKI_15632_PARENT_ID Cost=3 Cardinality=250 Bytes=2500
HASH JOIN Cost=5 Cardinality=1 Bytes=62
TABLE ACCESS FULL Object owner=MARS Object name=MARSHIERARCHY Cost=2 Cardinality=1 Bytes=27
TABLE ACCESS FULL Object owner=MARS Object name=MARSHIERARCHYROOT Cost=2 Cardinality=5 Bytes=175
NESTED LOOPS
CONNECT BY PUMP
TABLE ACCESS BY INDEX ROWID Object owner=MARS Object name=MARSNODELINK Cost=7 Cardinality=1 Bytes=39
INDEX RANGE SCAN Object owner=MARS Object name=IDX_MNL_HI_PI_NI Cost=3 Cardinality=4
TABLE ACCESS FULL Object owner=MARS Object name=MARSHIERARCHY Cost=2 Cardinality=1 Bytes=27
TABLE ACCESS BY INDEX ROWID Object owner=MARS Object name=MARSNODE Cost=3 Cardinality=1 Bytes=27
INDEX RANGE SCAN Object owner=MARS Object name=PK_MARSNODE Cost=2 Cardinality=1
TABLE ACCESS BY INDEX ROWID Object owner=MARS Object name=MARSNODE Cost=3 Cardinality=1 Bytes=49
INDEX RANGE SCAN Object owner=MARS Object name=PK_MARSNODE Cost=2 Cardinality=1
TABLE ACCESS BY INDEX ROWID Object owner=MARS Object name=MARSNODE Cost=3 Cardinality=1 Bytes=50
INDEX RANGE SCAN Object owner=MARS Object name=PK_MARSNODE Cost=2 Cardinality=1
TABLE ACCESS BY INDEX ROWID Object owner=MARS Object name=MARSNODETYPE Cost=2 Cardinality=1 Bytes=35
INDEX RANGE SCAN Object owner=MARS Object name=PK_MARSNODETYPE Cost=1 Cardinality=1
TABLE ACCESS BY INDEX ROWID Object owner=MARS Object name=NODE_ASSOC Cost=3 Cardinality=1 Bytes=33
INDEX RANGE SCAN Object owner=MARS Object name=PK_NODE_ASSOC Cost=1 Cardinality=3
INDEX RANGE SCAN Object owner=MARS Object name=PK_MARSNODE Cost=2 Cardinality=1
VIEW Object owner=MARS Cost=7 Cardinality=1 Bytes=10
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TABLE ACCESS FULL Object owner=MARS Object name=MARSHIERARCHYROOT Cost=2 Cardinality=5 Bytes=175
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INDEX RANGE SCAN Object owner=MARS Object name=IDX_MNL_HI_PI_NI Cost=3 Cardinality=4
TABLE ACCESS FULL Object owner=MARS Object name=MARSHIERARCHY Cost=2 Cardinality=1 Bytes=27
INDEX RANGE SCAN Object owner=MARS Object name=PK_MARSNODE Cost=2 Cardinality=1 Bytes=10
TABLE ACCESS BY INDEX ROWID Object owner=MARS Object name=NODE_ASSOC Cost=3 Cardinality=1 Bytes=49
INDEX RANGE SCAN Object owner=MARS Object name=PK_NODE_ASSOC Cost=1 Cardinality=3
TABLE ACCESS BY INDEX ROWID Object owner=MARS Object name=MARSNODE Cost=3 Cardinality=1 Bytes=49
INDEX RANGE SCAN Object owner=MARS Object name=PK_MARSNODE Cost=2 Cardinality=1
INDEX RANGE SCAN Object owner=MARS Object name=PK_MARSNODE Cost=2 Cardinality=1 Bytes=10
VIEW Object owner=MARS Cost=7 Cardinality=1 Bytes=33
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CONNECT BY WITH FILTERING
TABLE ACCESS BY INDEX ROWID Object owner=MARS Object name=MARSNODELINK
INDEX RANGE SCAN Object owner=MARS Object name=FKI_15632_PARENT_ID Cost=3 Cardinality=250 Bytes=2500
HASH JOIN Cost=5 Cardinality=1 Bytes=62
TABLE ACCESS FULL Object owner=MARS Object name=MARSHIERARCHY Cost=2 Cardinality=1 Bytes=27
TABLE ACCESS FULL Object owner=MARS Object name=MARSHIERARCHYROOT Cost=2 Cardinality=5 Bytes=175
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TABLE ACCESS BY INDEX ROWID Object owner=MARS Object name=MARSNODELINK Cost=7 Cardinality=1 Bytes=39
INDEX RANGE SCAN Object owner=MARS Object name=IDX_MNL_HI_PI_NI Cost=3 Cardinality=4
TABLE ACCESS FULL Object owner=MARS Object name=MARSHIERARCHY Cost=2 Cardinality=1 Bytes=27
INDEX RANGE SCAN Object owner=MARS Object name=PK_MARSNODE Cost=2 Cardinality=1 Bytes=10
VIEW Object owner=MARS Cost=7 Cardinality=1 Bytes=10
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INDEX RANGE SCAN Object owner=MARS Object name=FKI_15632_PARENT_ID Cost=3 Cardinality=250 Bytes=2500
HASH JOIN Cost=5 Cardinality=1 Bytes=62
TABLE ACCESS FULL Object owner=MARS Object name=MARSHIERARCHY Cost=2 Cardinality=1 Bytes=27
TABLE ACCESS FULL Object owner=MARS Object name=MARSHIERARCHYROOT Cost=2 Cardinality=5 Bytes=175
NESTED LOOPS
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TABLE ACCESS BY INDEX ROWID Object owner=MARS Object name=MARSNODELINK Cost=7 Cardinality=1 Bytes=39
INDEX RANGE SCAN Object owner=MARS Object name=IDX_MNL_HI_PI_NI Cost=3 Cardinality=4
TABLE ACCESS FULL Object owner=MARS Object name=MARSHIERARCHY Cost=2 Cardinality=1 Bytes=27
VIEW Object owner=MARS Cost=7 Cardinality=1 Bytes=38
FILTER
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TABLE ACCESS BY INDEX ROWID Object owner=MARS Object name=MARSNODELINK
INDEX RANGE SCAN Object owner=MARS Object name=FKI_15632_PARENT_ID Cost=3 Cardinality=250 Bytes=2500
HASH JOIN Cost=5 Cardinality=1 Bytes=62
TABLE ACCESS FULL Object owner=MARS Object name=MARSHIERARCHY Cost=2 Cardinality=1 Bytes=27
TABLE ACCESS FULL Object owner=MARS Object name=MARSHIERARCHYROOT Cost=2 Cardinality=5 Bytes=175
NESTED LOOPS
CONNECT BY PUMP
TABLE ACCESS BY INDEX ROWID Object owner=MARS Object name=MARSNODELINK Cost=7 Cardinality=1 Bytes=57
INDEX RANGE SCAN Object owner=MARS Object name=IDX_MNL_HI_PI_NI Cost=3 Cardinality=4
TABLE ACCESS FULL Object owner=MARS Object name=MARSHIERARCHY Cost=2 Cardinality=1 Bytes=36
INDEX RANGE SCAN Object owner=MARS Object name=PK_MARSNODE Cost=2 Cardinality=1 Bytes=10
VIEW Object owner=MARS Cost=7 Cardinality=1 Bytes=28
FILTER
CONNECT BY WITH FILTERING
TABLE ACCESS BY INDEX ROWID Object owner=MARS Object name=MARSNODELINK
INDEX RANGE SCAN Object owner=MARS Object name=FKI_15632_PARENT_ID Cost=3 Cardinality=250 Bytes=2500
HASH JOIN Cost=5 Cardinality=1 Bytes=62
TABLE ACCESS FULL Object owner=MARS Object name=MARSHIERARCHY Cost=2 Cardinality=1 Bytes=27
TABLE ACCESS FULL Object owner=MARS Object name=MARSHIERARCHYROOT Cost=2 Cardinality=5 Bytes=175
NESTED LOOPS
CONNECT BY PUMP
TABLE ACCESS BY INDEX ROWID Object owner=MARS Object name=MARSNODELINK Cost=7 Cardinality=1 Bytes=57
INDEX RANGE SCAN Object owner=MARS Object name=IDX_MNL_HI_PI_NI Cost=3 Cardinality=4
TABLE ACCESS FULL Object owner=MARS Object name=MARSHIERARCHY Cost=2 Cardinality=1 Bytes=27
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VIEW Object owner=MARS Cost=19365 Cardinality=1 Bytes=731
HASH GROUP BY Cost=19365 Cardinality=1 Bytes=1112
NESTED LOOPS OUTER Cost=19364 Cardinality=1 Bytes=1112
NESTED LOOPS OUTER Cost=19361 Cardinality=1 Bytes=1040
NESTED LOOPS OUTER Cost=19361 Cardinality=1 Bytes=1037
NESTED LOOPS OUTER Cost=19360 Cardinality=1 Bytes=1019
NESTED LOOPS OUTER Cost=19357 Cardinality=1 Bytes=951
NESTED LOOPS OUTER Cost=19354 Cardinality=1 Bytes=914
NESTED LOOPS OUTER Cost=19351 Cardinality=1 Bytes=877
NESTED LOOPS OUTER Cost=19337 Cardinality=1 Bytes=820
NESTED LOOPS OUTER Cost=19334 Cardinality=1 Bytes=783
NESTED LOOPS OUTER Cost=19320 Cardinality=1 Bytes=726
NESTED LOOPS OUTER Cost=19317 Cardinality=1 Bytes=707
NESTED LOOPS OUTER Cost=19303 Cardinality=1 Bytes=650
NESTED LOOPS OUTER Cost=19300 Cardinality=1 Bytes=613
NESTED LOOPS Cost=19285 Cardinality=1 Bytes=556
NESTED LOOPS Cost=19280 Cardinality=1 Bytes=443
NESTED LOOPS OUTER Cost=19275 Cardinality=1 Bytes=330
HASH JOIN RIGHT SEMI Cost=17457 Cardinality=1 Bytes=248
VIEW Object owner=SYS Object name=VW_NSO_1 Cost=1119 Cardinality=30 Bytes=150
HASH JOIN Cost=1119 Cardinality=30 Bytes=2040
TABLE ACCESS FULL Object owner=MARS Object name=FEED_GROUP Cost=2 Cardinality=5 Bytes=120
HASH JOIN Cost=1116 Cardinality=1607 Bytes=70708
TABLE ACCESS FULL Object owner=MARS Object name=FEED_GROUP_XREF Cost=13 Cardinality=701 Bytes=14721
HASH JOIN Cost=1102 Cardinality=3602 Bytes=82846
INDEX RANGE SCAN Object owner=MARS Object name=IDX_FBS_CD_FII_BI Cost=22 Cardinality=3602 Bytes=46826
TABLE ACCESS FULL Object owner=MARS Object name=FEED_INSTANCE Cost=1024 Cardinality=670264 Bytes=6702640
NESTED LOOPS Cost=16337 Cardinality=324 Bytes=78732
HASH JOIN Cost=14324 Cardinality=1977 Bytes=302481
NESTED LOOPS OUTER Cost=11 Cardinality=1 Bytes=114
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TABLE ACCESS BY INDEX ROWID Object owner=MARS Object name=MARSNODE Cost=5 Cardinality=1 Bytes=59
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TABLE ACCESS BY INDEX ROWID Object owner=MARS Object name=BOOK Cost=3 Cardinality=2 Bytes=72
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TABLE ACCESS BY INDEX ROWID Object owner=MARS Object name=MARSNODE Cost=3 Cardinality=1 Bytes=19
INDEX RANGE SCAN Object owner=MARS Object name=PK_MARSNODE Cost=2 Cardinality=1
PARTITION RANGE ALL Cost=13995 Cardinality=3854299 Bytes=150317661
TABLE ACCESS FULL Object owner=MARS Object name=POSITION Cost=13995 Cardinality=3854299 Bytes=150317661
PARTITION RANGE ITERATOR Cost=2 Cardinality=1 Bytes=90
PARTITION HASH ITERATOR Cost=2 Cardinality=1 Bytes=90
TABLE ACCESS BY LOCAL INDEX ROWID Object owner=MARS Object name=STAGING_POSITION Cost=2 Cardinality=1 Bytes=90
INDEX UNIQUE SCAN Object owner=MARS Object name=PK_STAGINGPOSITON Cost=1 Cardinality=1
PARTITION HASH ITERATOR Cost=1819 Cardinality=1 Bytes=82
TABLE ACCESS BY LOCAL INDEX ROWID Object owner=MARS Object name=STAGING_INSTRUMENT Cost=1819 Cardinality=1 Bytes=82
INDEX RANGE SCAN Object owner=MARS Object name=PK_STAGINGINSTRUMENT Cost=9 Cardinality=2551
PARTITION RANGE ITERATOR Cost=5 Cardinality=1 Bytes=113
PARTITION HASH ITERATOR Cost=5 Cardinality=1 Bytes=113
TABLE ACCESS BY LOCAL INDEX ROWID Object owner=MARS Object name=STAGING_SENSITIVITY Cost=5 Cardinality=1 Bytes=113
INDEX RANGE SCAN Object owner=MARS Object name=IDX_SENSITIVITY_FEED_ROW_ID Cost=3 Cardinality=8
PARTITION RANGE ITERATOR Cost=5 Cardinality=1 Bytes=113
PARTITION HASH ITERATOR Cost=5 Cardinality=1 Bytes=113
TABLE ACCESS BY LOCAL INDEX ROWID Object owner=MARS Object name=STAGING_SENSITIVITY Cost=5 Cardinality=1 Bytes=113
INDEX RANGE SCAN Object owner=MARS Object name=IDX_SENSITIVITY_FEED_ROW_ID Cost=3 Cardinality=8
TABLE ACCESS BY INDEX ROWID Object owner=MARS Object name=MARSNODELINK Cost=14 Cardinality=1 Bytes=57
INDEX RANGE SCAN Object owner=MARS Object name=FKI_15632_NODE_ID Cost=2 Cardinality=14
TABLE ACCESS BY INDEX ROWID Object owner=MARS Object name=MARSNODE Cost=3 Cardinality=1 Bytes=37
INDEX RANGE SCAN Object owner=MARS Object name=PK_MARSNODE Cost=2 Cardinality=1
TABLE ACCESS BY INDEX ROWID Object owner=MARS Object name=MARSNODELINK Cost=14 Cardinality=1 Bytes=57
INDEX RANGE SCAN Object owner=MARS Object name=FKI_15632_NODE_ID Cost=2 Cardinality=14
TABLE ACCESS BY INDEX ROWID Object owner=MARS Object name=MARSNODE Cost=3 Cardinality=1 Bytes=19
INDEX RANGE SCAN Object owner=MARS Object name=PK_MARSNODE Cost=2 Cardinality=1
TABLE ACCESS BY INDEX ROWID Object owner=MARS Object name=MARSNODELINK Cost=14 Cardinality=1 Bytes=57
INDEX RANGE SCAN Object owner=MARS Object name=FKI_15632_NODE_ID Cost=2 Cardinality=14
TABLE ACCESS BY INDEX ROWID Object owner=MARS Object name=MARSNODE Cost=3 Cardinality=1 Bytes=37
INDEX RANGE SCAN Object owner=MARS Object name=PK_MARSNODE Cost=2 Cardinality=1
TABLE ACCESS BY INDEX ROWID Object owner=MARS Object name=MARSNODELINK Cost=14 Cardinality=1 Bytes=57
INDEX RANGE SCAN Object owner=MARS Object name=FKI_15632_NODE_ID Cost=2 Cardinality=14
TABLE ACCESS BY INDEX ROWID Object owner=MARS Object name=MARSNODE Cost=3 Cardinality=1 Bytes=37
INDEX RANGE SCAN Object owner=MARS Object name=PK_MARSNODE Cost=2 Cardinality=1
TABLE ACCESS BY INDEX ROWID Object owner=MARS Object name=MARSNODE Cost=3 Cardinality=1 Bytes=37
INDEX RANGE SCAN Object owner=MARS Object name=PK_MARSNODE Cost=2 Cardinality=1
TABLE ACCESS BY INDEX ROWID Object owner=MARS Object name=XREF_DOMAIN_VALUE_MAP Cost=3 Cardinality=1 Bytes=68
INDEX RANGE SCAN Object owner=MARS Object name=IDX_XDVM_DMI_SV_BCD Cost=2 Cardinality=1
TABLE ACCESS BY INDEX ROWID Object owner=MARS Object name=ISSUE Cost=1 Cardinality=1 Bytes=18
INDEX UNIQUE SCAN Object owner=MARS Object name=PK_ISSUE Cost=0 Cardinality=1
INDEX UNIQUE SCAN Object owner=MARS Object name=PK_MOODY_RATING Cost=0 Cardinality=1 Bytes=3
TABLE ACCESS BY INDEX ROWID Object owner=MARS Object name=PARTICIPANT Cost=3 Cardinality=1 Bytes=72
INDEX RANGE SCAN Object owner=MARS Object name=PK_PARTICIPANT Cost=2 Cardinality=1Hi,
in your explain plan:
HASH JOIN RIGHT SEMI Cost=17457 Cardinality=1 Bytes=248
VIEW Object owner=SYS Object name=VW_NSO_1 Cost=1119 Cardinality=30 Bytes=150
HASH JOIN Cost=1119 Cardinality=30 Bytes=2040
TABLE ACCESS FULL Object owner=MARS Object name=FEED_GROUP Cost=2 Cardinality=5 Bytes=120
HASH JOIN Cost=1116 Cardinality=1607 Bytes=70708
TABLE ACCESS FULL Object owner=MARS Object name=FEED_GROUP_XREF Cost=13 Cardinality=701 Bytes=14721
HASH JOIN Cost=1102 Cardinality=3602 Bytes=82846
INDEX RANGE SCAN Object owner=MARS Object name=IDX_FBS_CD_FII_BI Cost=22 Cardinality=3602 Bytes=46826
TABLE ACCESS FULL Object owner=MARS Object name=FEED_INSTANCEThis part has the highest costs (this doesn't always mean it is slow). So this leads me to the WHERE clause where feed_group, feed_group_xref and feed_instance full are used. Maybe this can be improved, although the cardinality is not that high, so a full table can be the best. So the question is can indexes help here?
Furthermore there is the full table scan on POSITION:
TABLE ACCESS FULL Object owner=MARS Object name=POSITION Cost=13995 Cardinality=3854299 Bytes=150317661This looks also a large tabel (3 million + records), so is it possible to get this part smaller?
Herald ten Dam
http://htendam.wordpress.com -
While running the query how much time it will taken, I want to see the time
Hi Folks
I would like to know ... While running the query how much time it will be taken, I want to see the time? in WEBI XI R2.....
Plz let me know the answer.......Hi Ravi,
The time a report runs is estimated based on the last time it was run. So you need to run the report once before you can see how long it will take. Also it depends on several factors... the database server could cache some queries so running it a second time immediately after the first time could be quicker. And there is the chance of changing filters to bring back different sets of data.
You could also schedule a report and then check the scheduled instance's status properties and view how long a report actually ran.
Good luck -
Stopping a Query taking more time to execute in runtime in Oracle Forms.
Hi,
In the present application one of the oracle form screen is taking long time to execute a query, user wanted an option to stop the query in between and browse the result (whatever has been fetched before stopping the query).
We have tried three approach.
1. set max fetch record in form and block level.
2. set max fetch time in form and block level.
in above two method does not provide the appropiate solution for us.
3. the third approach we applied is setting the interaction mode to "NON BLOCKING" at the form level.
It seems to be worked, while the query took long time to execute, oracle app server prompts an message to press Esc to cancel the query and it a displaying the results fetched upto that point.
But the drawback is one pressing esc, its killing the session itself. which is causing the entire application to collapse.
Please suggest if there is any alternative approach for this or how to overcome this perticular scenario.
This kind of facility is alreday present in TOAD and PL/SQL developer where we can stop an executing query and browse the results fetched upto that point, is the similar facility is avialable in oracle forms ,please suggest.
Thanks and Regards,
Suraj
Edited by: user10673131 on Jun 25, 2009 4:55 AMHello Friend,
You query will definitely take more time or even fail in PROD,becuase the way it is written. Here are my few observations, may be it can help :-
1. XLA_AR_INV_AEL_SL_V XLA_AEL_SL_V : Never use a view inside such a long query , becuase View is just a window to the records.
and when used to join other table records, then all those tables which are used to create a view also becomes part of joining conition.
First of all please check if you really need this view. I guess you are using to check if the records have been created as Journal entries or not ?
Please check the possbility of finding it through other AR tables.
2. Remove _ALL tables instead use the corresponding org specific views (if you are in 11i ) or the sysnonymns ( in R12 )
For example : For ra_cust_trx_types_all use ra_cust_trx_types.
This will ensure that the query will execute only for those ORG_IDs which are assigned to that responsibility.
3. Check with the DBA whether the GATHER SCHEMA STATS have been run atleast for ONT and RA tables.
You can also check the same using
SELECT LAST_ANALYZED FROM ALL_TABLES WHERE TABLE_NAME = 'ra_customer_trx_all'.
If the tables are not analyzed , the CBO will not be able to tune your query.
4. Try to remove the DISTINCT keyword. This is the MAJOR reason for this problem.
5. If its a report , try to separate the logic in separate queries ( using a procedure ) and then populate the whole data in custom table, and use this custom table for generating the
report.
Thanks,
Neeraj Shrivastava
[email protected]
Edited by: user9352949 on Oct 1, 2010 8:02 PM
Edited by: user9352949 on Oct 1, 2010 8:03 PM -
Why update query takes long time ?
Hello everyone;
My update query takes long time. In emp ( self testing) just having 2 records.
when i issue update query , it takes long time;
SQL> select * from emp;
EID ENAME EQUAL ESALARY ECITY EPERK ECONTACT_NO
2 rose mca 22000 calacutta 9999999999
1 sona msc 17280 pune 9999999999
Elapsed: 00:00:00.05
SQL> update emp set esalary=12000 where eid='1';
update emp set esalary=12000 where eid='1'
* ERROR at line 1:
ORA-01013: user requested cancel of current operation
Elapsed: 00:01:11.72
SQL> update emp set esalary=15000;
update emp set esalary=15000
* ERROR at line 1:
ORA-01013: user requested cancel of current operation
Elapsed: 00:02:22.27Hi BCV;
Thanks for your reply but it doesn't provide output, please see this.
SQL> update emp set esalary=15000;
........... Lock already occured.
>> trying to trace >>
SQL> select HOLDING_SESSION from dba_blockers;
HOLDING_SESSION
144
SQL> select sid , username, event from v$session where username='HR';
SID USERNAME EVENT
144 HR SQL*Net message from client
151 HR enq: TX - row lock contention
159 HR SQL*Net message from client
>> It does n 't provide clear output about transaction lock >>
SQL> SELECT username, v$lock.SID, TRUNC (id1 / POWER (2, 16)) rbs,
2 BITAND (id1, TO_NUMBER ('ffff', 'xxxx')) + 0 slot, id2 seq, lmode,
3 request
4 FROM v$lock, v$session
5 WHERE v$lock.TYPE = 'TX'
6 AND v$lock.SID = v$session.SID
7 AND v$session.username = USER;
no rows selected
SQL> select MACHINE from v$session where sid = :sid;
SP2-0552: Bind variable "SID" not declared. -
Select query running long time
Hi,
DB version : 10g
platform : sunos
My select sql query running long time (more than 20hrs) .Still running .
Is there any way to find sql query completion time approximately. (Pending time)
Also is there any possibilities to increase the speed of sql query (already running) like adding hints.
Please help me on this .
ThanksHi Sathish thanks for your reply,
I have already checked in V$SESSION_LONGOPS .But it's showing TIME_REMAINING -->0
select TOTALWORK,SOFAR,START_TIME,TIME_REMAINING from V$SESSION_LONGOPS where SID='10'
TOTALWORK SOFAR START_TIME TIME_REMAINING
1099759 1099759 27-JAN-11 0Any idea ?
Thanks. -
Hi All,
I have cloned KSB1 tcode to custom one as required by business.
Below query takes more time than excepted.
Here V_DB_TABLE = COVP.
Values in Where clause are as follows
OBNJR in ( KSBB010000001224 BT KSBB012157221571)
GJAHR in blank
VERSN in '000'
WRTTP in '04' and '11'
all others are blank
VT_VAR_COND = ( CPUDT BETWEEN '20091201' and '20091208' )
SELECT (VT_FIELDS) INTO CORRESPONDING FIELDS OF GS_COVP_EXT
FROM (V_DB_TABLE)
WHERE LEDNR = '00'
AND OBJNR IN LR_OBJNR
AND GJAHR IN GR_GJAHR
AND VERSN IN GR_VERSN
AND WRTTP IN GR_WRTTP
AND KSTAR IN LR_KSTAR
AND PERIO IN GR_PERIO
AND BUDAT IN GR_BUDAT
AND PAROB IN GR_PAROB
AND (VT_VAR_COND).
Checked in table for this condition it has only 92 entries.
But when i execute program takes long time as 3 Hrs.
Could any one help me on this>1.Dont use SELECT/ENDSELECT instead use INTO TABLE addition .
> 2.Avoid using corresponding addition.create a type and reference it.
> If the select is going for dump beacause of storage limitations ,then use Cursors.
you got three large NOs .... all three recommendations are wrong!
The SE16 test is going in the right direction ... but what was filled. Nobody knows!!!!
Select options:
Did you ever try to trace the SE16? The generic statement has for every field an in-condition!
Without the information what was actually filled, nobody can say something there
are at least 2**n combinations possible!
Use ST05 for SE16 and check actual statement plus explain! -
Query taking long time for EXTRACTING the data more than 24 hours
Hi ,
Query taking long time for EXTRACTING the data more than 24 hours please find the query and explain plan details below even indexes avilable on table's goe's to FULL TABLE SCAN. please suggest me.......
SQL> explain plan for select a.account_id,round(a.account_balance,2) account_balance,
2 nvl(ah.invoice_id,ah.adjustment_id) transaction_id,
to_char(ah.effective_start_date,'DD-MON-YYYY') transaction_date,
to_char(nvl(i.payment_due_date,
to_date('30-12-9999','dd-mm-yyyy')),'DD-MON-YYYY')
due_date, ah.current_balance-ah.previous_balance amount,
decode(ah.invoice_id,null,'A','I') transaction_type
3 4 5 6 7 8 from account a,account_history ah,invoice i_+
where a.account_id=ah.account_id
and a.account_type_id=1000002
and round(a.account_balance,2) > 0
and (ah.invoice_id is not null or ah.adjustment_id is not null)
and ah.CURRENT_BALANCE > ah.previous_balance
and ah.invoice_id=i.invoice_id(+)
AND a.account_balance > 0
order by a.account_id,ah.effective_start_date desc; 9 10 11 12 13 14 15 16
Explained.
SQL> select * from table(dbms_xplan.display);
PLAN_TABLE_OUTPUT
| Id | Operation | Name | Rows | Bytes |TempSpc| Cost (%CPU)|
| 0 | SELECT STATEMENT | | 544K| 30M| | 693K (20)|
| 1 | SORT ORDER BY | | 544K| 30M| 75M| 693K (20)|
|* 2 | HASH JOIN | | 544K| 30M| | 689K (20)|
|* 3 | TABLE ACCESS FULL | ACCOUNT | 20080 | 294K| | 6220 (18)|
|* 4 | HASH JOIN OUTER | | 131M| 5532M| 5155M| 678K (20)|
|* 5 | TABLE ACCESS FULL| ACCOUNT_HISTORY | 131M| 3646M| | 197K (25)|
| 6 | TABLE ACCESS FULL| INVOICE | 262M| 3758M| | 306K (18)|
Predicate Information (identified by operation id):
2 - access("A"."ACCOUNT_ID"="AH"."ACCOUNT_ID")
3 - filter("A"."ACCOUNT_TYPE_ID"=1000002 AND "A"."ACCOUNT_BALANCE">0 AND
ROUND("A"."ACCOUNT_BALANCE",2)>0)
4 - access("AH"."INVOICE_ID"="I"."INVOICE_ID"(+))
5 - filter("AH"."CURRENT_BALANCE">"AH"."PREVIOUS_BALANCE" AND ("AH"."INVOICE_ID"
IS NOT NULL OR "AH"."ADJUSTMENT_ID" IS NOT NULL))
22 rows selected.
Index Details:+_
SQL> select INDEX_OWNER,INDEX_NAME,COLUMN_NAME,TABLE_NAME from dba_ind_columns where
2 table_name in ('INVOICE','ACCOUNT','ACCOUNT_HISTORY') order by 4;
INDEX_OWNER INDEX_NAME COLUMN_NAME TABLE_NAME
OPS$SVM_SRV4 P_ACCOUNT ACCOUNT_ID ACCOUNT
OPS$SVM_SRV4 U_ACCOUNT_NAME ACCOUNT_NAME ACCOUNT
OPS$SVM_SRV4 U_ACCOUNT CUSTOMER_NODE_ID ACCOUNT
OPS$SVM_SRV4 U_ACCOUNT ACCOUNT_TYPE_ID ACCOUNT
OPS$SVM_SRV4 I_ACCOUNT_ACCOUNT_TYPE ACCOUNT_TYPE_ID ACCOUNT
OPS$SVM_SRV4 I_ACCOUNT_INVOICE INVOICE_ID ACCOUNT
OPS$SVM_SRV4 I_ACCOUNT_PREVIOUS_INVOICE PREVIOUS_INVOICE_ID ACCOUNT
OPS$SVM_SRV4 U_ACCOUNT_NAME_ID ACCOUNT_NAME ACCOUNT
OPS$SVM_SRV4 U_ACCOUNT_NAME_ID ACCOUNT_ID ACCOUNT
OPS$SVM_SRV4 I_LAST_MODIFIED_ACCOUNT LAST_MODIFIED ACCOUNT
OPS$SVM_SRV4 I_ACCOUNT_INVOICE_ACCOUNT INVOICE_ACCOUNT_ID ACCOUNT
OPS$SVM_SRV4 I_ACCOUNT_HISTORY_ACCOUNT ACCOUNT_ID ACCOUNT_HISTORY
OPS$SVM_SRV4 I_ACCOUNT_HISTORY_ACCOUNT SEQNR ACCOUNT_HISTORY
OPS$SVM_SRV4 I_ACCOUNT_HISTORY_INVOICE INVOICE_ID ACCOUNT_HISTORY
OPS$SVM_SRV4 I_ACCOUNT_HISTORY_ADINV INVOICE_ID ACCOUNT_HISTORY
OPS$SVM_SRV4 I_ACCOUNT_HISTORY_CIA CURRENT_BALANCE ACCOUNT_HISTORY
OPS$SVM_SRV4 I_ACCOUNT_HISTORY_CIA INVOICE_ID ACCOUNT_HISTORY
OPS$SVM_SRV4 I_ACCOUNT_HISTORY_CIA ADJUSTMENT_ID ACCOUNT_HISTORY
OPS$SVM_SRV4 I_ACCOUNT_HISTORY_CIA ACCOUNT_ID ACCOUNT_HISTORY
OPS$SVM_SRV4 I_ACCOUNT_HISTORY_LMOD LAST_MODIFIED ACCOUNT_HISTORY
OPS$SVM_SRV4 I_ACCOUNT_HISTORY_ADINV ADJUSTMENT_ID ACCOUNT_HISTORY
OPS$SVM_SRV4 I_ACCOUNT_HISTORY_PAYMENT PAYMENT_ID ACCOUNT_HISTORY
OPS$SVM_SRV4 I_ACCOUNT_HISTORY_ADJUSTMENT ADJUSTMENT_ID ACCOUNT_HISTORY
OPS$SVM_SRV4 I_ACCOUNT_HISTORY_APPLIED_DT APPLIED_DATE ACCOUNT_HISTORY
OPS$SVM_SRV4 P_INVOICE INVOICE_ID INVOICE
OPS$SVM_SRV4 U_INVOICE CUSTOMER_INVOICE_STR INVOICE
OPS$SVM_SRV4 I_LAST_MODIFIED_INVOICE LAST_MODIFIED INVOICE
OPS$SVM_SRV4 U_INVOICE_ACCOUNT ACCOUNT_ID INVOICE
OPS$SVM_SRV4 U_INVOICE_ACCOUNT BILL_RUN_ID INVOICE
OPS$SVM_SRV4 I_INVOICE_BILL_RUN BILL_RUN_ID INVOICE
OPS$SVM_SRV4 I_INVOICE_INVOICE_TYPE INVOICE_TYPE_ID INVOICE
OPS$SVM_SRV4 I_INVOICE_CUSTOMER_NODE CUSTOMER_NODE_ID INVOICE
32 rows selected.
Regards,
Bathula
Oracle-DBAI have some suggestions. But first, you realize that you have some redundant indexes, right? You have an index on account(account_name) and also account(account_name, account_id), and also account_history(invoice_id) and account_history(invoice_id, adjustment_id). No matter, I will suggest some new composite indexes.
Also, you do not need two lines for these conditions:
and round(a.account_balance, 2) > 0
AND a.account_balance > 0
You can just use: and a.account_balance >= 0.005
So the formatted query isselect a.account_id,
round(a.account_balance, 2) account_balance,
nvl(ah.invoice_id, ah.adjustment_id) transaction_id,
to_char(ah.effective_start_date, 'DD-MON-YYYY') transaction_date,
to_char(nvl(i.payment_due_date, to_date('30-12-9999', 'dd-mm-yyyy')),
'DD-MON-YYYY') due_date,
ah.current_balance - ah.previous_balance amount,
decode(ah.invoice_id, null, 'A', 'I') transaction_type
from account a, account_history ah, invoice i
where a.account_id = ah.account_id
and a.account_type_id = 1000002
and (ah.invoice_id is not null or ah.adjustment_id is not null)
and ah.CURRENT_BALANCE > ah.previous_balance
and ah.invoice_id = i.invoice_id(+)
AND a.account_balance >= .005
order by a.account_id, ah.effective_start_date desc;You will probably want to select:
1. From ACCOUNT first (your smaller table), for which you supply a literal on account_type_id. That should limit the accounts retrieved from ACCOUNT_HISTORY
2. From ACCOUNT_HISTORY. We want to limit the records as much as possible on this table because of the outer join.
3. INVOICE we want to access last because it seems to be least restricted, it is the biggest, and it has the outer join condition so it will manufacture rows to match as many rows as come back from account_history.
Try the query above after creating the following composite indexes. The order of the columns is important:create index account_composite_i on account(account_type_id, account_balance, account_id);
create index acct_history_comp_i on account_history(account_id, invoice_id, adjustment_id, current_balance, previous_balance, effective_start_date);
create index invoice_composite_i on invoice(invoice_id, payment_due_date);All the columns used in the where clause will be indexed, in a logical order suited to the needs of the query. Plus each selected column is indexed as well so that we should not need to touch the tables at all to satisfy the query.
Try the query after creating these indexes.
A final suggestion is to try larger sort and hash area sizes and a manual workarea policy.alter session set workarea_size_policy = manual;
alter session set sort_area_size = 2147483647;
alter session set hash_area_size = 2147483647; -
How to set vo query at run time
Hi,
Is it possible to bind the where clause of query at run time.
N :)Hi,
Yes its possible.
To add new where clause to your query.
vo.setWhereClause(null);//If you want to remove any existing programmatically added where clause.
vo.setWhereClause("Your new query");
To bind varibales (Say there are 2 bind variables),
First way to achieve this.
setWhereClauseParam(null); //Always reset it to remove existing bindings)
setWhereClauseParam(0, "Your first paramter value"); // Second parameter "Your first paramter value" is of type object.
setWhereClauseParam(1, "Your first paramter value");
In case you use "?" styly type binding, this count in above method starts with 1 instead of 0.
Second way is to put all bind variables in an object array and pass to above method.
Vector params=new Vector(2);
params.addElement("FirstParameter");
params.addElement("SecondParameter");
Now call vo.executeQuery() to fetch the results as per new query.
Abdul Wahid -
Using Materilaized view in a query .. query is taking time????
Hi I have a query :-
SELECT rownum as id, u.last_name, u.first_name,u.phone phone, u.empid,u.supervisor id
FROM emp_view u -- using view
CONNECT BY PRIOR u.empid = u.supervisor_id
START WITH u.sbcuid = 'ph2755';
here emp_view is a view .
------ The above query is taking 3 sec to execute.
Then I created Materialuized view emp_mv and the the MV query is same as emp_view view query.
After this i executed following sql
SELECT rownum as id, u.last_name, u.first_name,u.phone phone, u.empid,u.supervisor id
FROM emp_mv u -- using materialized view
CONNECT BY PRIOR u.empid = u.supervisor_id
START WITH u.sbcuid = 'ph2755';
this query is taking 15 sec to execute..... :(
can anyone please tell me why MV query is taking time????Hi,
In your first case you query a view, meaning that you query the underlying tables. These probably have indexes and stats are updated.
In you second case you query a materialized view, meaning that you query the underlying base table of that mview.
This probably do not have the same indexes to support that query.
But of course, I'm just guessing based on the little information provided.
If you want to take this further, please search for "When your query takes too long" and "How to post a tuning request".
These two threads holds valuable information, not only on how to ask this kind of question, but also how to start solving it on your own.
Regards
Peter -
Is index range scan the reason for query running long time
I would like to know whether index range scan is the reason for the query running long time. Below is the explain plan. If so, how to optimise it? Please help
Operation Object COST CARDINALITY BYTES
SELECT STATEMENT () 413 1000 265000
COUNT (STOPKEY)
FILTER ()
TABLE ACCESS (BY INDEX ROWID) ORDERS 413 58720 15560800
INDEX (RANGE SCAN) IDX_SERV_PROV_ID 13 411709
TABLE ACCESS (BY INDEX ROWID) ADDRESSES 2 1 14
INDEX (UNIQUE SCAN) SYS_C004605 1 1
TABLE ACCESS (BY INDEX ROWID) ADDRESSES 2 1 14
INDEX (UNIQUE SCAN) SYS_C004605 1 1
TABLE ACCESS (BY INDEX ROWID) ADDRESSES 2 1 14
INDEX (UNIQUE SCAN) SYS_C004605 1 1The index range scan means that the optimiser has determined that it is better to read the index rather than perform a full table scan. So in answer to your question - quite possibly but the alternative might take even longer!
The best thing to do is to review your query and check that you need every table included in the query and that you are accessing the tables via the best route. For example if you can access a table via primary key index that would be better than using a non-unique index. But the best way of reducing the time the query takes to run is to give it less tables (and indexes) to read.
John Seaman
http://www.asktheoracle.net -
SQL Query taking longer time as seen from Trace file
Below Query Execution timings:
Any help will be benefitial as its affecting business needs.
SELECT MATERIAL_DETAIL_ID
FROM
GME_MATERIAL_DETAILS WHERE BATCH_ID = :B1 FOR UPDATE OF ACTUAL_QTY NOWAIT
call count cpu elapsed disk query current rows
Parse 1 0.00 0.70 0 0 0 0
Execute 2256 8100.00 24033.51 627 12298 31739 0
Fetch 2256 900.00 949.82 0 12187 0 30547
total 4513 9000.00 24984.03 627 24485 31739 30547
Thanks and RegardsThanks Buddy.
Data Collected from Trace file:
SELECT STEP_CLOSE_DATE
FROM
GME_BATCH_STEPS WHERE BATCH_ID
IN (SELECT
DISTINCT BATCH_ID FROM
GME_MATERIAL_DETAILS START WITH BATCH_ID = :B2 CONNECT BY PRIOR PHANTOM_ID=BATCH_ID)
AND NVL(STEP_CLOSE_DATE, :B1) > :B1
call count cpu elapsed disk query current rows
Parse 1 0.00 0.54 0 0 0 0
Execute 2256 800.00 1120.32 0 0 0 0
Fetch 2256 9100.00 13551.45 396 77718 0 0
total 4513 9900.00 14672.31 396 77718 0 0
Misses in library cache during parse: 0
Optimizer goal: CHOOSE
Parsing user id: 66 (recursive depth: 1)
Rows Row Source Operation
0 TABLE ACCESS BY INDEX ROWID GME_BATCH_STEPS
13160 NESTED LOOPS
6518 VIEW
6518 SORT UNIQUE
53736 CONNECT BY WITH FILTERING
30547 NESTED LOOPS
30547 INDEX RANGE SCAN GME_MATERIAL_DETAILS_U1 (object id 146151)
30547 TABLE ACCESS BY USER ROWID GME_MATERIAL_DETAILS
23189 NESTED LOOPS
53736 BUFFER SORT
53736 CONNECT BY PUMP
23189 TABLE ACCESS BY INDEX ROWID GME_MATERIAL_DETAILS
23189 INDEX RANGE SCAN GME_MATERIAL_DETAILS_U1 (object id 146151)
4386 INDEX RANGE SCAN GME_BATCH_STEPS_U1 (object id 146144)
In the Package there are lots of SQL Statements using CONNECT BY CLAUSE.
Does the use of CONNECT BY Clause degrades performance?
As you can see the Rows Section is 0 but the Query and elapsed time is taking longer
Regards
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