It's taking too much time(more than 10 min)

Hi All,
Below query is taking more time.I need to tune this.
Could you some one help to tune or give me new idea for re-write the query.
1) Database version
Version: 10.2.0.3.02)Query
SELECT    COUNT(C.ITEM_RESPONSE_ID) cnt,c.item_id
    FROM     CAT_ITEM_USER_RESPONSE C, TEST_SESSION_DETAIL T,
    TEST_SESSION S, TEST_DETAIL D, INSTITUTION E,cat_item_parameter g
    WHERE    D.TEST_DETAIL_ID = 1
    AND     TRUNC(T.TEST_END_DATE) BETWEEN ADD_MONTHS(TO_DATE('01-AUG-09','DD-MON-YY'),-48)
    AND     TO_DATE('31-AUG-2009','DD-MON-YY')
    AND     T.TEST_SESSION_STATUS_ID = 3
    AND     C.RESTART_FLAG=0
    and     pretest=1
    AND     S.INSTITUTION_ID=E.INSTITUTION_ID
    AND     SUBSTR(E.INSTITUTION_ID_DISPLAY,8,3) <> '000'
    AND     T.TEST_DETAIL_ID = D.TEST_DETAIL_ID
    AND     S.TEST_SESSION_ID = T.TEST_SESSION_ID
    AND     C.TEST_SESSION_DETAIL_ID = T.TEST_SESSION_DETAIL_ID
    AND     G.ITEM_ID = C.ITEM_ID group by c.item_id3)Explain plan
explain plan succeeded.
PLAN_TABLE_OUTPUT
Plan hash value: 3230521769
| Id | Operation                                  | Name                        | Rows | Bytes | Cost (%CPU)| Time     | Pstart| Pstop |
|   0 | SELECT STATEMENT                           |                             | 1340 |    99K|   104K (1)| 00:20:56 |       |       |
|   1 | HASH GROUP BY                             |                             | 1340 |    99K|   104K (1)| 00:20:56 |       |       |
|* 2 |   FILTER                                   |                             |       |       |            |          |       |       |
|* 3 |    HASH JOIN                               |                             |   116K| 8624K|   104K (1)| 00:20:56 |       |       |
|   4 |     PARTITION HASH ALL                     |                             | 2312 | 18496 |    25   (0)| 00:00:01 |     1 |     5 |
|* 5 |      TABLE ACCESS FULL                     | CAT_ITEM_PARAMETER          | 2312 | 18496 |    25   (0)| 00:00:01 |     1 |     5 |
|* 6 |     TABLE ACCESS BY GLOBAL INDEX ROWID     | CAT_ITEM_USER_RESPONSE      |    19 |   228 |    17   (0)| 00:00:01 | ROWID | ROWID |
|   7 |      NESTED LOOPS                          |                             |   116K| 7716K|   104K (1)| 00:20:56 |       |       |
|* 8 |       HASH JOIN                            |                             | 6279 |   343K| 6325   (1)| 00:01:16 |       |       |
|* 9 |        INDEX FAST FULL SCAN                | INSTI_ID_NAME_COUN_DISP_IDX | 7571 |   103K|    17   (0)| 00:00:01 |       |       |
|* 10 |        HASH JOIN                           |                             | 6280 |   257K| 6307   (1)| 00:01:16 |       |       |
| 11 |         NESTED LOOPS                       |                             | 6330 |   197K| 4641   (1)| 00:00:56 |       |       |
| 12 |          PARTITION HASH SINGLE             |                             |     1 |     5 |     0   (0)| 00:00:01 |     4 |     4 |
|* 13 |           INDEX UNIQUE SCAN                | PK_TEST_DETAIL_NEW          |     1 |     5 |     0   (0)| 00:00:01 |     4 |     4 |
|* 14 |          TABLE ACCESS BY GLOBAL INDEX ROWID| TEST_SESSION_DETAIL         | 6330 |   166K| 4641   (1)| 00:00:56 | ROWID | ROWID |
|* 15 |           INDEX RANGE SCAN                 | TEST_SESSION_DETAIL_FK2_I   | 26065 |       |    68   (0)| 00:00:01 |       |       |
| 16 |         INDEX FAST FULL SCAN               | TEST_SESSION_AK_1           | 1182K|    11M| 1661   (1)| 00:00:20 |       |       |
|* 17 |       INDEX RANGE SCAN                     | CAT_ITEM_USER_RESP_IDX1     |    19 |       |     2   (0)| 00:00:01 |       |       |
Predicate Information (identified by operation id):
   2 - filter(ADD_MONTHS(TO_DATE('01-AUG-09','DD-MON-YY'),-48)<=TO_DATE('2009-08-31 00:00:00', 'yyyy-mm-dd hh24:mi:ss'))
   3 - access("G"."ITEM_ID"="C"."ITEM_ID")
   5 - filter("PRETEST"=1)
   6 - filter(TO_NUMBER("C"."RESTART_FLAG")=0)
   8 - access("S"."INSTITUTION_ID"="E"."INSTITUTION_ID")
   9 - filter(SUBSTR("E"."INSTITUTION_ID_DISPLAY",8,3)<>'000')
10 - access("S"."TEST_SESSION_ID"="T"."TEST_SESSION_ID")
13 - access("D"."TEST_DETAIL_ID"=1)
14 - filter("T"."TEST_SESSION_STATUS_ID"=3 AND TRUNC(INTERNAL_FUNCTION("T"."TEST_END_DATE"))<=TO_DATE('2009-08-31 00:00:00',
              'yyyy-mm-dd hh24:mi:ss') AND TRUNC(INTERNAL_FUNCTION("T"."TEST_END_DATE"))>=ADD_MONTHS(TO_DATE('01-AUG-09','DD-MON-YY'),-48))
15 - access("T"."TEST_DETAIL_ID"=1)
17 - access("C"."TEST_SESSION_DETAIL_ID"="T"."TEST_SESSION_DETAIL_ID")

user575115 wrote:
2)Query
SELECT    COUNT(C.ITEM_RESPONSE_ID) cnt,c.item_id
FROM     CAT_ITEM_USER_RESPONSE C, TEST_SESSION_DETAIL T,
TEST_SESSION S, TEST_DETAIL D, INSTITUTION E,cat_item_parameter g
WHERE    D.TEST_DETAIL_ID = 1
AND     TRUNC(T.TEST_END_DATE) BETWEEN ADD_MONTHS(TO_DATE('01-AUG-09','DD-MON-YY'),-48)
AND     TO_DATE('31-AUG-2009','DD-MON-YY')
AND     T.TEST_SESSION_STATUS_ID = 3
AND     C.RESTART_FLAG=0
and     pretest=1
AND     S.INSTITUTION_ID=E.INSTITUTION_ID
AND     SUBSTR(E.INSTITUTION_ID_DISPLAY,8,3) <> '000'
AND     T.TEST_DETAIL_ID = D.TEST_DETAIL_ID
AND     S.TEST_SESSION_ID = T.TEST_SESSION_ID
AND     C.TEST_SESSION_DETAIL_ID = T.TEST_SESSION_DETAIL_ID
AND     G.ITEM_ID = C.ITEM_ID group by c.item_id
Do you have a function based index for TRUNC(T.TEST_END_DATE) and SUBSTR(E.INSTITUTION_ID_DISPLAY,8,3)?
They are the first things that are obvious.

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Hi fiontan,
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Hi fiontan,
Thanks a lot for the response!!!
Yeah!! I kow it's a lotta code, but i thought it'd be more informative if the whole function was quoted.
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the problem is when the users are executing the report at the same time it is taking too much time.because of this the perfoemance is very poor.
is there any way to sort out this issue,like can we send the report to the individual user's mail id
so that they can not log in to the portal
or can we create the same report on the cube.
what could be the main difference if the report made on the cube or ods?
please help me
thanks in advance
sridath

Hi
Try this to improve performance of query
Find the query Run-time
where to find the query Run-time ?
557870 'FAQ BW Query Performance'
130696 - Performance trace in BW
This info may be helpful.
General tips
Using aggregates and compression.
Using less and complex cell definitions if possible.
1. Avoid using too many nav. attr
2. Avoid RKF and CKF
3. Many chars in row.
By using T-codes ST03 or ST03N
Go to transaction ST03 > switch to expert mode > from left side menu > and there in system load history and distribution for a particular day > check query execution time.
/people/andreas.vogel/blog/2007/04/08/statistical-records-part-4-how-to-read-st03n-datasets-from-db-in-nw2004
/people/andreas.vogel/blog/2007/03/16/how-to-read-st03n-datasets-from-db
Try table rsddstats to get the statistics
Using cache memory will decrease the loading time of the report.
Run reporting agent at night and sending results to email. This will ensure use of OLAP cache. So later report execution will retrieve the result faster from the OLAP cache.
Also try
1. Use different parameters in ST03 to see the two important parameters aggregation ratio and records transferred to F/E to DB selected.
2. Use the program SAP_INFOCUBE_DESIGNS (Performance of BW infocubes) to see the aggregation ratio for the cube. If the cube does not appear in the list of this report, try to run RSRV checks on the cube and aggregates.
Go to SE38 > Run the program SAP_INFOCUBE_DESIGNS
It will shown dimension Vs Fact tables Size in percent.If you mean speed of queries on a cube as performance metric of cube,measure query runtime.
3. To check the performance of the aggregates,see the columns valuation and usage in aggregates.
Open the Aggregates...and observe VALUATION and USAGE columns.
"---" sign is the valuation of the aggregate. You can say -3 is the valuation of the aggregate design and usage. ++ means that its compression is good and access is also more (in effect, performance is good). If you check its compression ratio, it must be good. -- means the compression ratio is not so good and access is also not so good (performance is not so good).The more is the positives...more is useful the aggregate and more it satisfies the number of queries. The greater the number of minus signs, the worse the evaluation of the aggregate. The larger the number of plus signs, the better the evaluation of the aggregate.
if "-----" then it means it just an overhead. Aggregate can potentially be deleted and "+++++" means Aggregate is potentially very useful.
In valuation column,if there are more positive sign it means that the aggregate performance is good and it is useful to have this aggregate.But if it has more negative sign it means we need not better use that aggregate.
In usage column,we will come to know how far the aggregate has been used in query.
Thus we can check the performance of the aggregate.
Refer.
http://help.sap.com/saphelp_nw70/helpdata/en/b8/23813b310c4a0ee10000000a114084/content.htm
http://help.sap.com/saphelp_nw70/helpdata/en/60/f0fb411e255f24e10000000a1550b0/frameset.htm
performance ISSUE related to AGGREGATE
Note 356732 - Performance Tuning for Queries with Aggregates
Note 166433 - Options for finding aggregates (find optimal aggregates for an InfoCube)
4. Run your query in RSRT and run the query in the debug mode. Select "Display Aggregates Found" and "Do not use cache" in the debug mode. This will tell you if it hit any aggregates while running. If it does not show any aggregates, you might want to redesign your aggregates for the query.
Also your query performance can depend upon criteria and since you have given selection only on one infoprovider...just check if you are selecting huge amount of data in the report
Check for the query read mode in RSRT.(whether its A,X or H)..advisable read mode is X.
5. In BI 7 statistics need to be activated for ST03 and BI admin cockpit to work.
By implementing BW Statistics Business Content - you need to install, feed data and through ready made reports which for analysis.
http://help.sap.com/saphelp_nw70/helpdata/en/26/4bc0417951d117e10000000a155106/frameset.htm
/people/vikash.agrawal/blog/2006/04/17/query-performance-150-is-aggregates-the-way-out-for-me
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/1955ba90-0201-0010-d3aa-8b2a4ef6bbb2
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/ce7fb368-0601-0010-64ba-fadc985a1f94
http://help.sap.com/saphelp_nw04/helpdata/en/c1/0dbf65e04311d286d6006008b32e84/frameset.htm
You can go to T-Code DB20 which gives you all the performance related information like
Partitions
Databases
Schemas
Buffer Pools
Tablespaces etc
use tool RSDDK_CHECK_AGGREGATE in se38 to check for the corrupt aggregates
If aggregates contain incorrect data, you must regenerate them.
202469 - Using aggregate check tool
Note 646402 - Programs for checking aggregates (as of BW 3.0B SP15)
You can find out whether an aggregate is usefull or useless you can find out through a proccess of checking the tables RSDDSTATAGGRDEF*
Run the query in RSRT with statistics execute and come back you will get STATUID... copy this and check in the table...
This gives you exactly which infoobjects it's hitting, if any one of the object is missing it's useless aggregate.
6
Check SE11 > table RSDDAGGRDIR . You can find the last callup in the table.
Generate Report in RSRT
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/cccad390-0201-0010-5093-fd9ec8157802
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/4c0ab590-0201-0010-bd9a-8332d8b4f09c
Business Intelligence Journal Improving Query Performance in Data Warehouses
http://www.tdwi.org/Publications/BIJournal/display.aspx?ID=7891
Achieving BI Query Performance Building Business Intelligence
http://www.dmreview.com/issues/20051001/1038109-1.html
Assign points if useful
Cheers
SM

Importing is taking too much time (2 DAYS)

Dear All,
I'm Importing below support packages together in a queue @ SAP Solution manger 4 .
SAPKB70015             Basis Support Package 15 for 7.00
SAPKA70015             ABA Support Package 15 for 7.00
SAPKITL426             ST 400: Patch 0016, CRT for SAPKB70015
SAPKIBIIP6             BI_CONT 703: patch 0006
SAPKIBIIP7             BI_CONT 703: patch 0007
SAPKIBIIP8             BI_CONT 703: patch 0008
SAPK-40010INCPRXRPM    CPRXRPM 400: patch 0010
SAPK-40011INCPRXRPM    CPRXRPM 400: patch 0011
SAPK-40012INCPRXRPM    CPRXRPM 400: patch 0012
SAPKIPYJ7E             PI_BASIS 2005_1_700: patch 0014
SAPKW70016             BW Support Package 16 for 7.00
importing is taking too much time (2 DAYS) in main import phase, I have seen SLOG, there are many rows " I am waiting 1 sec and 6 sec . and also checked transaction code STMS all support packages imported except one support package "SAPKW70016 "
Please advice.
Best Regards'
HE

Hello Mohan,
The DBTABLOG table does get large, the best is to switch off logging. If that's not possible, increase the frequency of your delete job, also explore one more alternative have a look at the archival object: BC_DBLOGS, you could archive old records (in accordance with your customer's data retention policies) to reduce the size of the table.
Also, have a look at the following notes, they will advise you on how to improve the performance of your delete job:
Note 531923 - Audit Trail: Indexes on table DBTABLOG
Note 579980 - Table logs: Performance during access to DBTABLOG
Regards,
Siddhesh

Combining clob taking too much time - need help

Hello,
I want to append clob values into another clob value like
declare
v_temp clob;
v_c1_temp clob;
cursor c1 as select clob_data from t;
-- here t table contains clob_data column holding clob data
-- t table have more then 1500 rows
begin
v_temp := '';
open c1 into v_c1_temp;
loop
v_temp := v_temp + v_c1_temp; --------- combining clob (concat may be used)
end loop;
close(c1);
end;
above part also repeats in outer loop (not shown here)
my problem is :- it is taking too much time - you dont believe 90% more time due to that concatenation.
is it any smart way to do same thing?
It will be very helpful to me.

Hi ,
You should also always try and have the latest BI content patch installed but I don't think this is the problem. It seems that there
are alot of objects to collect. Under 'grouping' you can select the option 'only necessary objects', please check if you can
use this option to install the objects that you need from content.
Best Regards,
Des.

Archive Delete job taking too much time - STXH Sequential Read

Hello,
We have been running Archive sessions in our production system in last couple of months. We use SARA and selecting the appropriate variants for WRITE, DELETE and STORAGE options.
Currently we use the Archive object FI_DOCUMNT and the write job is finished as per the normal time (5 hrs based on the selection criteria). After that normally the delete job is used to complete in 1hr or less than 2hrs always (in last 3 months).
But in last few days the delete job is taking too much to complete (around 8 - 10hrs) when I monitor the system found that the Sequential Read for table STXH is taking too much time to read and it seems this is the cause.
Could you please provide a solution for the same, so that the job will run faster as earlier.
Thanks for your time
Shyl

Hi Juan,
After the statistics run the performance is quite good. Now the job getting finished as expected.
Thanks. Problem solved
Shyl

Server0 process taking too much time

Hi All,
Once i start the Netweaver server, the server) process taking too much time.
When i was installed Netweaver that time 13 min, after 2 months 18 min.. then 25 min now it is taking 35 minutes.... to become green color.
Why it is taking too much time, what might be the cause.....
Give some ideas to solve this problem..............
The server0 developer trace has this information continuously 6 to 7 times...
[Thr 4204] *************** STISEND ***************
[Thr 4204] STISEND: conversation_ID: 86244265
[Thr 4204] STISEND: sending 427 bytes
[Thr 4204] STISearchConv: found conv without search
[Thr 4204] STISEND: send synchronously
[Thr 4204] STISEND GW_TOTAL_SAPSEND_HDR_LEN: 88
[Thr 4204] NiIWrite: hdl 0 sent data (wrt=515,pac=1,MESG_IO)
[Thr 4204] STIAsSendToGw: Send to Gateway o.k.
[Thr 4204] STIAsRcvFromGw: timeout value: -1
[Thr 4204] NiIRead: hdl 0 recv would block (errno=EAGAIN)
[Thr 4204] NiIRead: hdl 0 received data (rcd=3407,pac=2,MESG_IO)
[Thr 4204] STIAsRcvFromGw: Receive from Gateway o.k.
[Thr 4204] STISEND: data_received: CM_COMPLETE_DATA_RECEIVED
[Thr 4204] STISEND: received_length: 3327
[Thr 4204] STISEND: status_received: CM_SEND_RECEIVED
[Thr 4204] STISEND: request_to_send_received: CM_REQ_TO_SEND_NOT_RECEIVED
[Thr 4204] STISEND: ok
[Thr 4204] STIRCV: new buffer state = BUFFER_EMPTY
[Thr 4204] STIRCV: ok
[Thr 4204] *************** STSEND ***************
[Thr 4204] STSEND: conversation_ID: 86244265
[Thr 4204] STISearchConv: found conv without search
[Thr 4204] STSEND: new buffer state = BUFFER_DATA
[Thr 4204] STSEND: 106 bytes buffered
[Thr 4204] *************** STIRCV ***************
[Thr 4204] STIRCV: conversation_ID: 86244265
[Thr 4204] STIRCV: requested_length: 16000 bytes
[Thr 4204] STISearchConv: found conv without search
[Thr 4204] STIRCV: send 106 buffered bytes before receive
[Thr 4204] STIRCV: new buffer state = BUFFER_DATA2
[Thr 4204] *************** STISEND ***************
then
[Thr 4252] JHVM_NativeGetParam: get profile parameter DIR_PERF
[Thr 4252] JHVM_NativeGetParam: return profile parameter DIR_PERF=C:\usr\sap\PRFCLOG
this message continuously
Can i have any solution for the above problem let me know .
Thanks & regards,
Sridhar M.

Hello Manoj,
Thanks for your quick response, Previously the server has 4GB RAM and now also it has same.
Yesterday i found some more information, like deployed(through SDM) applications also take some memory at the time of starting the J2EE server...Is it right?
Any other cause...let me know
Thanks & Regards,
Sridhar M.

It's taking too much time(more than 10 min)

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