DELETE query takes long time more than 30 min
Hi
I have delete query as below.It takes 1300 sec to execute .Please let me know how to reduce the time of execution.I have indexes on both the columns jdoid,jdoversion of deletion.
DELETE FROM SIT7016.DEVICEINTERFACE WHERE JDOID = :1 AND JDOVERSION = :2
Regards
Pandu
udnapp wrote:
I have delete query as below.It takes 1300 sec to execute .Please let me know how to reduce the time of execution.I have indexes on both the columns jdoid,jdoversion of deletion.
DELETE FROM SIT7016.DEVICEINTERFACE WHERE JDOID = :1 AND JDOVERSION = :2Pretty meaningless information without an the execution plan.
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PROD> select count(*) from patient_ad a,patient_master_data p , patient_contracts c
2 where a.patient_id=p.patient_id and c.patient_id = a.patient_id and
3 to_date(a.admit_date,'dd/mm/yyyy') >= '29/12/2008' and
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5 p.nationality_code <> 16 and c.CONTRACT_NO= 2207;
Execution Plan
Plan hash value: 801996662
| Id | Operation | Name |
| 0 | SELECT STATEMENT | |
| 1 | SORT AGGREGATE | |
| 2 | NESTED LOOPS | |
| 3 | NESTED LOOPS | |
|* 4 | INDEX RANGE SCAN | PATIENT_CONTRACTS_NDX2 |
|* 5 | TABLE ACCESS BY INDEX ROWID| PATIENT_AD |
|* 6 | INDEX RANGE SCAN | PATIENT_AD_NDX1 |
|* 7 | TABLE ACCESS BY INDEX ROWID | PATIENT_MASTER_DATA |
|* 8 | INDEX UNIQUE SCAN | PK_PATIENT_MASTER_DATA |
Predicate Information (identified by operation id):
4 - access("C"."CONTRACT_NO"=2207)
5 - filter(TO_DATE(INTERNAL_FUNCTION("A"."ADMIT_DATE"),'dd/mm/yyyy')<
='17/12/2009' AND TO_DATE(INTERNAL_FUNCTION("A"."ADMIT_DATE"),'dd/mm/yyy
y')>='29/12/2008')
6 - access("C"."PATIENT_ID"="A"."PATIENT_ID")
7 - filter("P"."NATIONALITY_CODE"<>16)
8 - access("A"."PATIENT_ID"="P"."PATIENT_ID")
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THIS QUERY TAKING A LONG TIME EVEN AFTER 24 HOURS NOT YIELDING ANY RESULT.
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Execution Plan
Plan hash value: 801996662
| Id | Operation | Name |
| 0 | SELECT STATEMENT | |
| 1 | SORT AGGREGATE | |
| 2 | NESTED LOOPS | |
| 3 | NESTED LOOPS | |
|* 4 | INDEX RANGE SCAN | PATIENT_CONTRACTS_NDX2 |
|* 5 | TABLE ACCESS BY INDEX ROWID| PATIENT_AD |
|* 6 | INDEX RANGE SCAN | PATIENT_AD_NDX1 |
|* 7 | TABLE ACCESS BY INDEX ROWID | PATIENT_MASTER_DATA |
|* 8 | INDEX UNIQUE SCAN | PK_PATIENT_MASTER_DATA |
Predicate Information (identified by operation id):
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SELECT ENEXT.NUM_PRSN_EMPLY ,ENEXT.COD_BUSUN ,ENEXT.DAT_CALDE ,ENEXT.COD_SHFT
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ENEXT.DAT_CALDE
call count cpu elapsed disk query current rows
Parse 2 0.00 0.00 0 0 0 0
Execute 2 0.00 0.00 0 0 0 0
Fetch 2 40.45 40.30 306 17107740 0 24
total 6 40.45 40.30 306 17107740 0 24
what is wrong in my query?
why it take long time?user13344656 wrote:
what is wrong in my query?
why it take long time?See PL/SQL forum FAQ
https://forums.oracle.com/forums/ann.jspa?annID=1535
*3. How to improve the performance of my query? / My query is running slow.*
SQL and PL/SQL FAQ
For instructions on what information to post an how to format it. -
Oracle SQL Select query takes long time than expected.
Hi,
I am facing a problem in SQL select query statement. There is a long time taken in select query from the Database.
The query is as follows.
select /*+rule */ f1.id,f1.fdn,p1.attr_name,p1.attr_value from fdnmappingtable f1,parametertable p1 where p1.id = f1.id and ((f1.object_type ='ne_sub_type.780' )) and ( (f1.id in(select id from fdnmappingtable where fdn like '0=#1#/14=#S0058-3#/17=#S0058-3#/18=#1#/780=#5#%')))order by f1.id asc
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PurushothamSQL> @/alcatel/omc1/data/query.sql
2 ;
9 rows selected.
Execution Plan
Plan hash value: 3745571015
| Id | Operation | Name |
| 0 | SELECT STATEMENT | |
| 1 | SORT ORDER BY | |
| 2 | NESTED LOOPS | |
| 3 | NESTED LOOPS | |
| 4 | TABLE ACCESS FULL | PARAMETERTABLE |
|* 5 | TABLE ACCESS BY INDEX ROWID| FDNMAPPINGTABLE |
|* 6 | INDEX UNIQUE SCAN | PRIMARY_KY_FDNMAPPINGTABLE |
|* 7 | TABLE ACCESS BY INDEX ROWID | FDNMAPPINGTABLE |
|* 8 | INDEX UNIQUE SCAN | PRIMARY_KY_FDNMAPPINGTABLE |
Predicate Information (identified by operation id):
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6 - access("P1"."ID"="F1"."ID")
7 - filter("FDN" LIKE '0=#1#/14=#S0058-3#/17=#S0058-3#/18=#1#/780=#5#
8 - access("F1"."ID"="ID")
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Statistics
0 recursive calls
0 db block gets
0 consistent gets
0 physical reads
0 redo size
0 bytes sent via SQL*Net to client
0 bytes received via SQL*Net from client
0 SQL*Net roundtrips to/from client
0 sorts (memory)
0 sorts (disk)
9 rows processed
SQL> -
Select query taking long time (more then 6 min)
Dear experts,
DATA:IT_CHEQ2 TYPE TABLE OF TY_BSAS,
WA_CHEQ2 LIKE LINE OF IT_CHEQ2.
DATA : IT_CHEQ3 TYPE STANDARD TABLE OF TY_BSAS WITH HEADER LINE.
TYPES:BEGIN OF TY_BSAS,
BUKRS TYPE BSAS-BUKRS,
HKONT TYPE BSAS-HKONT,
AUGDT TYPE BSAS-AUGDT,
AUGBL TYPE BSAK-AUGBL,
ZUONR TYPE BSAK-ZUONR,
GJAHR TYPE BSAK-GJAHR,
BELNR TYPE BSAK-BELNR,
BUZEI TYPE BSAK-BUZEI,
BUDAT TYPE BSAK-BUDAT,
XBLNR TYPE BSAK-XBLNR,
BLART TYPE BSAK-BLART,
SHKZG TYPE BSAK-SHKZG,
DMBTR TYPE BSAK-DMBTR,
WMWST TYPE BSAK-WMWST,
AUGGJ TYPE BSAK-AUGGJ, " CLEARING FYSICAL YEAR
OT_TAX TYPE BSAK-DMBTR,
TDS TYPE BSAK-DMBTR,
VAT TYPE BSAK-DMBTR, "Vat amount
WCT TYPE BSAK-DMBTR,
ADV TYPE BSAK-DMBTR, "Advance
CHAMT TYPE BSAK-DMBTR,
CHNO TYPE PAYR-CHECT,
CHDATE TYPE PAYR-ZALDT,
DBIT_NOTE TYPE BSAK-DMBTR,
PAY_ADJ TYPE BSAK-DMBTR,
PEND_SES TYPE BSAK-DMBTR, "PENDING SES
CR_PARTY(50) TYPE C,
END OF TY_BSAS.
SELECT BUKRS HKONT AUGDT AUGBL ZUONR GJAHR BELNR BUZEI BUDAT XBLNR BLART SHKZG
DMBTR WMWST
FROM BSAS INTO " APPENDING
CORRESPONDING FIELDS OF TABLE IT_CHEQ3
FOR ALL ENTRIES IN IT_CHEQ2
WHERE AUGBL = IT_CHEQ2-AUGBL and
BUKRS = IT_CHEQ2-BUKRS AND
* AUGBL = IT_CHEQ2-AUGBL
GJAHR = IT_CHEQ2-GJAHR
AND XBLNR = IT_CHEQ2-XBLNR.
line company code hkont augdt augbl zuonr gjahr belnr buzei budat
1 1018 0012100030 20110831 2100009710 20110831 2011 2100009710 005 20110831
xblnr blart shkzg
RA03 KZ H 37067.00 0.00 2011 0.00 0.00
2 1018 0012100030 20110831 2100009710 20110831 2011 2100009710 006 20110831
RA03 KZ H 393850.00 0.00 2011 0.00 0.00
3 1018 0012100030 20110831 2100009710 20110831 2011 2100009710 004 20110831 RA03 KZ S 723589.13 0.00 2011 0.00 0.00
4 1018 0012100030 20110831 2100009710 20110823 2011 3900001250 001 20110823 RA03 RS H 712921.13 0.00 2011 0.00 0.00
5 1018 0023200000 20110831 2100009710 20110831 2011 2100009710 008 20110831 RA03 KZ H 21788.00 0.00 2011 0.00 0.00
6 1018 0023200000 20110831 2100009710 20110831 2011 2100009710 007 20110831 RA03 KZ H 1162821.00 0.00 2011 0.00 0.00
if i put same entry in se11 for bsas it takes 7 second
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help me gurus
regards
victorTested point 2.
There is no difference.
REPORT Z_YZ_SELECT_ORDER.
types: begin of t_orderadm,
description type CRMT_PROCESS_DESCRIPTION,
created_at type COMT_CREATED_AT_USR,
LOGICAL_SYSTEM type CRMT_LOGSYS,
TEMPLATE_TYPE type CRMT_TEMPLATE_TYPE_DB,
VERIFY_DATE type CRMT_VERIFY_DATE,
GUID type CRMT_OBJECT_GUID,
end of t_orderadm.
types: begin of t_orderadm_1,
GUID type CRMT_OBJECT_GUID,
description type CRMT_PROCESS_DESCRIPTION,
LOGICAL_SYSTEM type CRMT_LOGSYS,
TEMPLATE_TYPE type CRMT_TEMPLATE_TYPE_DB,
created_at type COMT_CREATED_AT_USR,
VERIFY_DATE type CRMT_VERIFY_DATE,
end of t_orderadm_1.
data: lt_orders type table of t_orderadm,
lt_orders_1 type table of t_orderadm_1.
select description created_at logical_system template_type verify_date guid
into table lt_orders
from crmd_orderadm_h.
select guid description logical_system template_type created_at verify_date
into table lt_orders_1
from crmd_orderadm_h.
write 'done'.
First select - mixed order of fields. Response time: 82.155 microseconds for 39380 records selected.
Second select - fields in the order of the table. Response time: 81.061 microseconds for the same 39380 records selected.
Then I changed the order of SELECT statements. I have put first the select with ordered fields, and second - select with mixed order of fields. The runtimes were the following:
Ordered fields - 82.649 microseconds
Mixed order of fields - 80.270 microseconds.
So I'm going to change the Wiki page in order to avoid in future advices that make no sense. -
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Also check this.........Recommendations for Modeling MultiProviders
http://help.sap.com/saphelp_nw70/helpdata/EN/43/5617d903f03e2be10000000a1553f6/frameset.htm
Hope this helps......
Regards,
Debjani...... -
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data first, and then loading the data back. Worked much better. -
Saving a query takes long time
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I think, Siggi is right.
In such situations I usually do the following:
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Query takes long time - Please help!
I've a query like below (not actual query)
update (select eds.title eds_title,edv.title edv_title from mia_data_staging eds, mia_doc_Versions edv where eds.id = edv.id and eds.title != edv.title) set edv_title = eds_title;
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Plan hash value: 2242214163
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| 0 | UPDATE STATEMENT | | 1627K| 1405M| | 18E (1)| |
| 1 | UPDATE | MIA_DOC_VERSIONS | | | | | |
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PLAN_TABLE_OUTPUT
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Predicate Information (identified by operation id):
---------------------------------------------------user652494 wrote:
I've a query like below (not actual query)
| 3 | TABLE ACCESS BY INDEX ROWID | MIA_DOC_VERSIONS | 1627K| 701M| | 18E (1)| |
| 4 | BITMAP CONVERSION TO ROWIDS| | | | | | |
| 5 | BITMAP INDEX FULL SCAN | IDX_30 | | | | | |This part of your execution plan looks very suspicious: It's performing a bitmap index full scan to do then a single row access by rowid apparently for all rows of the table, which seems to be a very inefficient operation. It also shows an unreasonable cost for that operation. The question is why it is not using a "full table scan" to access the MIA_DOC_VERSIONS table?
You might want to try simply the FULL hint to request a full table scan on the MIA_DOC_VERSIONS table in order to find out how the execution plan then is going to look like:
update (select /*+ FULL(EDV) */ eds.title eds_title,edv.title edv_title from mia_data_staging eds, mia_doc_Versions edv where eds.id = edv.id and eds.title != edv.title) set edv_title = eds_title;or
update /*+ FULL(a.EDV) */ (select eds.title eds_title,edv.title edv_title from mia_data_staging eds, mia_doc_Versions edv where eds.id = edv.id and eds.title != edv.title) a set edv_title = eds_title;Looking at the execution plan of the hinted statement one might get a clue why the optimizer favors an index access path instead.
Regards,
Randolf
Oracle related stuff blog:
http://oracle-randolf.blogspot.com/
SQLTools++ for Oracle (Open source Oracle GUI for Windows):
http://www.sqltools-plusplus.org:7676/
http://sourceforge.net/projects/sqlt-pp/ -
Hi,
I have a table containing around 0.25 million records. It has a time stamp column and its indexed. Now I am deleting records from this table older than one year.
But this is taking more than 10 minutes. Since I am doing this thorough application (has time out setting for 10 min), I am wondering why it is taking so much time.
Delete qury is similar to this
delete from table_name where time_column < (sysdate - 366)
Is that because it is trying to update index at the same time ?
Thanks in advance.Rahul Ner wrote:
I have a table containing around 0.25 million records. It has a time stamp column and its indexed. Now I am deleting records from this table older than one year.
But this is taking more than 10 minutes. Since I am doing this thorough application (has time out setting for 10 min), I am wondering why it is taking so much time.
Delete qury is similar to this
delete from table_name where time_column < (sysdate - 366)
Is that because it is trying to update index at the same time ?Could you please post a complete DBMS_XPLAN.DISPLAY output including the "Predicate Information" section below the plan. Please use the \ tag before and after as I did here to format it in fixed font. Use the "Quote" button in the message editor to find out how I used it here.
Make sure that you use appropriate PAGESIZE and LINESIZE settings in SQL*Plus, suggested values are PAGESIZE 999 LINESIZE 130
How many indexes are on that table?
Are there any constraints defined on the table resp. any foreign keys pointing to that table that need to checked while deleting?
Are any triggers defined on the table?
Regards,
Randolf
Oracle related stuff blog:
http://oracle-randolf.blogspot.com/
SQLTools++ for Oracle (Open source Oracle GUI for Windows):
http://www.sqltools-plusplus.org:7676/
http://sourceforge.net/projects/sqlt-pp/ -
Hi, could anybody help to tune this query,
select /*+ choose*/ r.com , r.tvalue,
t_result.info(r.rt_id,r.rt_ver) rp
from n_result r,
(select /*+ choose*/ rt_id, max(rt_ver) max_ver
from n_result
group by rt_id) re
where
r.s_id = :p_eone
and
r.stat != 'E'
and
r.con not in ('R','M')
and
r.rt_id = re.rt_id
and
r.rt_ver = re.max_veExplain Plan
OPERATION OPTIONS COST CARDINALITY BYTES OPTIMIZER
SELECT STATEMENT 15417 9 837 HINT: CHOOSE
HASH JOIN 15417 9 837
TABLE ACCESS BY INDEX ROWID 5 9 603 ANALYZED
INDEX RANGE SCAN 3 9 ANALYZED
VIEW 15401 4829027 125554702
SORT GROUP BY 15401 4829027 48290270
INDEX FULL SCAN 15401 4916886 49168860 ANALYZEDsome more information which i can give you,
oracle version -8.1.7.4.0
time taken - 4 minutes (same type of queries are more in the package so all together going more than 1 hr)
and tkprof is
call count cpu elapsed disk query current rows
Parse 1 0.02 0.00 0 0 0 0
Execute 1 0.00 0.01 0 0 0 0
Fetch 2 61.55 198.77 38475 15406 2 5
total 4 61.57 198.78 38475 15406 2 5
Misses in library cache during parse: 1
Optimizer mode: CHOOSE
Parsing user id: 43
Rows Row Source Operation
5 HASH JOIN
5 TABLE ACCESS BY INDEX ROWID N_RESULT
6 INDEX RANGE SCAN (object id 24943)
4829162 VIEW
4829162 SORT GROUP BY
4917021 INDEX FULL SCAN (object id 24892)Thanks
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