Query execution Flow

Dear Experts,
I would like to know how does the query execution happens @ runtime.
Definitely its a SQL which been executed in backend.
I have one scenerio Like Cube is having Material As Characteristic (M1,M2,M3)
& Navigation Attribute Material group (MG) also some kef Figure Like Sales-Values.
So can you please let me know what will be the order of tables which will be
referred @ runtime when I execute the query.
Please Advice.
Regards,
Vivek

Hi,
Check in RSRT with execute+debug and select SQL display, you will find the information.
Check the below blogs for more info:
/people/arun.varadarajan/blog/2009/07/19/how-to-utilize-your-sql-skills-in-sap-bw--part-2--understanding-query-execution
/people/arun.varadarajan/blog/2009/07/19/how-to-utilize-your-sql-skills-in-sap-bw--part-3--query-execution-and-analysis
Reg
Pra

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Query execution process in OBIEE 11g

Hi all,
I am confused with Web logic server, enterprise manager server and other components of
Obiee 11g architecture with respect to query execution in Answers of Presentation services.
Please explain me in detail...from the login page i.e when a user logins
into the presentation services for query request. Explain how exactly the various
servers communicates starting from logging into presentation services (how exactly user authenticates),
then query execution (which servers communicates). I am confused with the flow of query process.
Regards
Chandra kanth.

Gurus and Experts,
Please take your valuable time to answer my question.
regards
chandra kanth.

Issue while query execution on web analyser.

Hi,
I am getting an error message while query execution on web ie Record set too large , data retrieval restricted by configuration .I am able to run the same query in bex analyser without any issue .Any idea what could be the reason and solution for this issue .
Regards,
Neetika.

Hi Neetika,
The Query is exceeding the set limits,i suggest you to Reduce the time LIne for the Query, as it may be having more number of Cells in terms of Rows and Columns.
Execute the Query for Less number of Days,if u r executing it for 1 Month then execute it for 10 Days.
Rgds
SVU123

SSRS Error : Query execution failed for dataset 'dataSet'. (rsErrorExecutingCommand) Semantic query execution failed. Invalid object name 'RPT.*********'. (rsSemanticQueryEngineError)

I am new to SSRS and I am trying to migrate reports from 2008 to 2012. As I have so many reports to migrate, I simply got the back up of ReportServer,
ReportServerTempDB, and Encryption Key and restored them to test environment. I made necessary configuration from RS configuration tool. I am able to see the reports now when I browse //hostname/reports. But when I open any particular report I am getting some
error.
· An error has occurred during report processing.
(rsProcessingAborted)
Query execution       failed for dataset 'dataSet'.
      (rsErrorExecutingCommand
Semantic query        execution failed. Invalid object name
       'RPT. ******'. (rsSemanticQueryEngineError)
****** - I am assuming this is a custom data class.
Does anyone have insight on this? or any better way that I can migrate the reports to new server with less efforts.
I don’t have the reports solution file to deploy the reports, so I have followed backup and restore process.

Hi Kishore237,
According to your description, you migrated some reports from Reporting Services (SSRS) 2008 to 2012. Now you get error when accessing the reports on SSRS 2012. Right?
In this scenario, did you modify the report data source in database after migration? You can try to open the report in Report Builder or Report designer and check the report dataset. If you can preview the report in Report builder or Report designer,
please try to redeploy the report to Report Server. If it is still not working, please try to restore the database from backup. And for migrating reports, please follow the "Content-Only Migration" in the link below:
http://msdn.microsoft.com/en-us/library/ms143724(v=sql.110).aspx
If you have any question, please feel free to ask.
Best Regards,
Simon Hou

Unable to select the filter value after query execution

hi,
I am unable to drill down my keyfigures.
1.i have a lC and GC values out of which GC is hidden so after the query execution i would like to filter my value between GC and LC but i do get only LC value in the filter and i do not get GC value to select .
Could any one tell me how this can be done.this is very urgent.
Thx
Subha

resolved on my own,so i am closing this.
Thx
Subha

Asset query execution performance after upgrade from 4.6C to ECC 6.0+EHP4

Hi,guys
I am encounted a weird problems about asset query execution performance after upgrade to ECC 6.0.
Our client had migrated sap system from 4.6c to ECC 6.0. We test all transaction code and related stand report and query.
Everything is working normally except this asset depreciation query report. It is created based on ANLP, ANLZ, ANLA, ANLB, ANLC table; there is also some ABAP code for additional field.
This report execution costed about 6 minutes in 4.6C system; however it will take 25 minutes in ECC 6.0 with same selection parameter.
At first, I am trying to find some difference in table index ,structure between 4.6c and ECC 6.0,but there is no difference about it.
i am wondering why the other query reports is running normally but only this report running with too long time execution dump messages even though we do not make any changes for it.
your reply is very appreciated
Regards
Brian

Thanks for your replies.
I check these notes, unfortunately it is different our situation.
Our situation is all standard asset report and query (sq01) is running normally except this query report.
I executed se30 for this query (SQ01) at both 4.6C and ECC 6.0.
I find there is some difference in select sequence logic even though same query without any changes.
I list there for your reference.
4.6C
AQA0FI==========S2============
Open Cursor ANLP                                    38,702 39,329,356 = 39,329,356      34.6     AQA0FI==========S2============   DB     Opens
Fetch ANLP                                         292,177 30,378,351 = 30,378,351      26.7    26.7 AQA0FI==========S2============   DB     OpenS
Select Single ANLC                                  15,012 19,965,172 = 19,965,172      17.5    17.5 AQA0FI==========S2============   DB     OpenS
Select Single ANLA                                  13,721 11,754,305 = 11,754,305      10.3    10.3 AQA0FI==========S2============   DB     OpenS
Select Single ANLZ                                   3,753   3,259,308 = 3,259,308       2.9     2.9 AQA0FI==========S2============   DB     OpenS
Select Single ANLB                                   3,753   3,069,119 = 3,069,119       2.7     2.7 AQA0FI==========S2============   DB     OpenS
ECC 6.0
Perform FUNKTION_AUSFUEHREN     2     358,620,931          355
Perform COMMAND_QSUB     1     358,620,062          68
Call Func. RSAQ_SUBMIT_QUERY_REPORT     1     358,569,656          88
Program AQIWFI==========S2============     2     358,558,488          1,350
Select Single ANLA     160,306     75,576,052     =     75,576,052
Open Cursor ANLP     71,136     42,096,314     =     42,096,314
Select Single ANLC     71,134     38,799,393     =     38,799,393
Select Single ANLB     61,888     26,007,721     =     26,007,721
Select Single ANLZ     61,888     24,072,111     =     24,072,111
Fetch ANLP     234,524     13,510,646     =     13,510,646
Close Cursor ANLP     71,136     2,017,654     =     2,017,654
We can see first open cursor ANLP ,fetch ANLP then select ANLC,ANLA,ANLZ,ANLB at 4.C.
But it changed to first select ANLA,and open cursor ANLP,then select ANLC,ANLB,ANLZ,at last fetch ANLP.
Probably,it is the real reason why it is running long time in ECC 6.0.
Is there any changes for query selcection logic(table join function) in ECC 6.0.

An error has occurred during report processing. (rsProcessingAborted). Query execution failed for dataset 'DimUserWorkCentre'. (rsErrorExecutingCommand). The Cube either does not exists or has not been processed

Hi,
I'm having issues with the report created using SSAS cube.
An error has occurred during report processing. (rsProcessingAborted)
Query execution failed for dataset 'DimUserWorkCentre'. (rsErrorExecutingCommand)
The Operator_Performance cube either does not exist or has not been processed.
I have searched through internet and tried all the solutions, but didn't worked for me.
SSRS services running as NETEWORK SERVICE user.
SSRS Execution running as a Different user, which is the login is used to logon ot that server. I have also verified this user has access to database. I'm using Shared DataSource(SSAS Source) for this report.
Can any one please help me.
Thank You,
Praveen.
Praveen

Hello,
Have you tried it to execute on report manager , Is your data source properly configured in Report Manager and your report is mapped with Datset correctly?
Have you executed the Dataset query MDX editor now?
What is the volume of data you are fetching in the report. Try it to execute in other than IE , I don't know the exact reason but some of our report with large volume of data are failing on IE , on the other hand these reports are running fine Google
Chrome
blog:My Blog/
Hope this will help you !!!
Sanjeewan

Query execution time

Dear SCN,
I am new to BOBJ Environment. I have created a webi report on top of bex query by using BISC connection. Bex query is build for Vendor Ageing Analysis. My bex query will take very less time to execute the report (max 1 min). But in case of webi is takeing around 5 min when i click on refresh. I have not used any conditions,filters,restrictions are done at webi level all are done at bex level only.
Please let me know techniques to optimize the query execution time in webi. Currently we are in BO 4.0.
Regards,
PRK

Hi Praveen
Go through this document for performance optimization using BICS connection
http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/d0e3c552-e419-3010-1298-b32e6210b58d?QuickLink=index&…

Steps involved in Query execution

Can anyone please suggest the exact steps that take place in a query execution. I know on the broad level. But I want to know to basic level. For example we would like to know all the steps that an OLAP processor does to get the data, process it and then send it for display.
Also, say the total time taken for the query execution is xx msec, we would like to know the complete break up of this time for all the activities that are completed from the time of query execution till the display of result.
Thanks

Hi Suchitra,
Please go through these links:
/people/vikash.agrawal/blog/2006/04/26/in-what-147sequence148-olap-processor-look-for-query-relevant-data
/people/prakash.darji/blog/2006/01/26/query-optimization
Assign points if helpful
Thanks,
Amith

An error has occurred during report processing. (rsProcessingAborted).. Query execution failed for data set

Hi All,
I'm facing a strange problem..
I've developed few reports. they are working fine in develop environment. after successfull testing they were published on web.
in web version, all reports are executing for first time.. if I change any of parameters values or without chaning also..
if I press "View Report" following error occurs..
An error has occurred during report processing. (rsProcessingAborted)
Query execution failed for data set 'dsMLGDB2Odbc'. (rsErrorExecutingCommand)
For more information about this error navigate to the report server on the local server machine, or enable remote errors
please suggest any alternative ways to overcome this issue
thanks in adv.

in my case the problem is
one virtual machine is for developers
other for testers
in developers i created a report, then save like *.rdl and copy to testers machine, does not work there
the error what testers get is
Error during the local report processing.
Could not find a web-based application at http://developersMachine/AnalyticsReports/DataBaseConnector.rsds
and the solution is to use alternative url or in some cases http://localhost/

An error has occurred during report processing. (rsProcessingAborted) Query execution failed for dataset 'dsPriority'. (rsErrorExecutingCommand)

click report error:
log file:
processing!ReportServer_0-2!104c!04/27/2015-19:15:21:: e ERROR: Throwing Microsoft.ReportingServices.ReportProcessing.ProcessingAbortedException: An error has occurred during report processing., ;
Info: Microsoft.ReportingServices.ReportProcessing.ProcessingAbortedException: An error has occurred during report processing.
---> Microsoft.ReportingServices.ReportProcessing.ReportProcessingException: Query execution failed for dataset 'dsPriority'.
---> Microsoft.AnalysisServices.AdomdClient.AdomdErrorResponseException: Query (26, 25) The ALLMEMBERS function expects a hierarchy expression for the argument. A member expression was used.
   at Microsoft.AnalysisServices.AdomdClient.AdomdDataReader..ctor(XmlReader xmlReader, CommandBehavior commandBehavior, AdomdConnection connection)
   at Microsoft.AnalysisServices.AdomdClient.AdomdCommand.ExecuteReader(CommandBehavior behavior)
   at Microsoft.AnalysisServices.AdomdClient.AdomdCommand.System.Data.IDbCommand.ExecuteReader(CommandBehavior behavior)
   at Microsoft.ReportingServices.DataExtensions.AdoMdCommand.ExecuteReader(CommandBehavior behavior)
   at Microsoft.ReportingServices.OnDemandProcessing.RuntimeDataSet.RunDataSetQuery()
   --- End of inner exception stack trace ---
   at Microsoft.ReportingServices.OnDemandProcessing.RuntimeDataSet.RunDataSetQuery()
   at Microsoft.ReportingServices.OnDemandProcessing.RuntimeDataSet.Process()
   at Microsoft.ReportingServices.OnDemandProcessing.RuntimeParameterDataSet.Process()
   at Microsoft.ReportingServices.OnDemandProcessing.RuntimeDataSet.ProcessConcurrent(Object threadSet)
   --- End of inner exception stack trace ---
open http://localhost:8080/tfs/TeamFoundation/Administration/v3.0/WarehouseControlService.asmx?op=ProcessWarehouse click Invoke:
System.Web.Services.Protocols.SoapException: TF221029: Reporting for Team Foundation Server does not have any warehouse jobs defined. Use the Team Foundation Administration Console to rebuild the reporting. : 2015-04-27T19:30:29:782 ---> System.InvalidOperationException:
TF221029: Reporting for Team Foundation Server does not have any warehouse jobs defined. Use the Team Foundation Administration Console to rebuild the reporting. at Microsoft.TeamFoundation.Warehouse.WarehouseAdmin.QueueJobs(String collectionName, String jobName)
at Microsoft.TeamFoundation.Warehouse.WarehouseControlWebService.ProcessWarehouse(String collectionName, String jobName) --- End of inner exception stack trace --- at Microsoft.TeamFoundation.Warehouse.WarehouseControlWebService.ProcessWarehouse(String collectionName,
String jobName)

Hi shelman,
I'd like to know whether you configured TFS reporting service properly, and if you can get the report normally before. From the error message, you might has wrong data source or the parameters of the dataset 'dsPriority'. You can check whether the data source
for your report is available, try to use windows authentication. Or check the parameters of dataset 'dsPriority' make sure the query works when you execute it manually.
To process the TFS data warehouse and analysis services cube, I'd like to know which operation you selected before clicking Invoke button. Please follow the instructions on this
page to process TFS data warehouse and analysis service cube manually. You can also refer the James's last reply in this
thread or this
blog to check if the solutions work for you.
Another option is run TFS best practice analyzer to check if there any configure issues on your TFS server machine. And check event logs to see if there any useful information, elaborate more details about your scenario including reproduce steps if the problem
persists.
Best regards,

Query Execution/Elapsed Time and Oracle Data Blocks

Hi,
I have created 3 tables with one column only. As an example Table 1 below:
SQL> create table T1 ( x char(2000));
So 3 tables are created in this way i.e. T1,T2 and T3.
T1 = in the default database tablespace of 8k (11g v11.1.0.6.0 - Production) (O.S=Windows).
T2 = I created in a Tablespace with Blocksize 16k.
T3 = I created in a Tablespace with Blocksize 4k. In the same Instance.
Each table has approx. 500 rows (So, table sizes are same in all the cases to test Query execution time ). As these 3 tables are created under different data block sizes so the ALLOCATED no. of data blocks are different in all cases.
T1 = 8k = 256 Blocks = 00:00:04.76 (query execution time/elapsed time)
T2 = 16k=121 Blocks = 00:00:04.64
T3 = 4k = 490 Blocks = 00:00:04.91
Table Access is FULL i.e. I have used select * from table_name; in all 3 cases. No Index nothing.
My Question is why query execution time is nearly the same in all 3 cases because Oracle has to read all the data blocks in each case to fetch the records and there is a much difference in the allocated no. of blocks ???
In 4k block size example, Oracle has to read just 121 blocks and it's taking nearly the same time as it's taking to read 490 blocks???
This is just 1 example of different data blocks. I have around 40 tables in each block size tablespace and the result are nearly the same. It's very strange for me because there is a much difference in the no. of allocated blocks but execution time is almost the same, only difference in milliseconds.
I'll highly appreciate the expert opinions.
Bundle of thanks in advance.
Best Regards,

Hi Chris,
No I'm not using separate databases, it's 8k database with non-standard blocksizes of 16k and 4k.
Actually I wanted to test the Elapsed time of these 3 tables, so for that I tried to create the same size
tables.
And how I equalize these is like I have created one column table with char(2000).
555 MB is the figure I wanted to use for these 3 tables ( no special figure, just to make it bigger than the
RAM used for my db at the db startup to be sure of not retrieving the records from cache).
so row size with overhead is 2006 * 290,000 rows = 581740000(bytes) / 1024 = 568105KB / 1024 = 555MB.
Through this math calculation I thought It will be the total table size. So I Created the same no. of rows in 3 blocksizes.
If it's wrong then what a mes because I was calculating tables sizes in the same way from the last few months.
Can you please explain a little how you found out the tables sizes in different block sizes.Though I understood how you
calculated size in MB from these 3 block sizes
T8K =97177 BLOCKS=759MB *( 97177*8 = 777416KB / 1024 = 759MB )*
T16K=41639 BLOCKS=650MB
BT4K=293656 BLOCKS=1147MB
For me it's new to calculate the size of a table. Can you please tell me then how many rows I can create in each of
these 3 tables to make them equal in MB to test for elapsed time.
Then I'll again run my test and put the results here. Because If I've wrongly calculated table sizes then there is no need to talk about elapsed time. First I must equalize the table sizes properly.
SQL> select sum(bytes)/1024/1024 "Size in MB" from dba_segments> 2 where segment_name = 'T16K';
Size in MB
655
Is above SQL is correct to calculate the size or is it the correct alternative way to your method of calculating the size??
I created the same table again with everything same and the result is :
SQL> select num_rows,blocks from user_tables where table_name = 'T16K';NUM_ROWS BLOCKS
290000 41703
64 more blocks are allocated this time so may be that's y it's showing total size of 655 instead of 650.
Thanks alot for your help.
Best Regards,
KAm
Edited by: kam555 on Nov 20, 2009 5:57 PM

Query Execution Filter Val. Selection take no effect on query based on AG

Hi,
by setting the 'Query Execution Filter Val. Selection' property in query, we can control the value list when we execute the query. with setting 'Only posted value values for navigation', only the data posted to cube can be listed when you do the selection in the Query Execution selection screen and with setting 'values in master data table', all the date will be listed when you do the selection in the Query Execution selection screen.
1. but for queries based on cube or multi-cube, when i select 'values in master data table' in query defination, still only the posted value is displayed when i do the selection in the Query Execution selection screen. is there anyone know why?
2. for queries based on aggregation level, whatever setting i choose, all the values is displayed when i do the selection in the Query Execution selection screen. how i can do select the posted value for this kind of query?
Many Thanks
Jonathan

I apologize I meant the other link:
I will put the useful text from that link here.
Regarding the query built on aggregation level please note the following
the aggregation level is always a Virtual Provider built other
InfoProvider and hence it does not have the dimension table and hence
the F4 mode D is not supported.
Therefore when aggregation level is used in a query, F4 does not supportD-mode: 'Only Values in InfoProvider' and all master data values are
displayed in the value list.
Reference from the note
984229 F4 modes for input help as of SAP NetWeaver 2004s BI
4. Since other InfoProviders do not have a dimension table, the system
displays only posted values if you select "Only Posted Values for
Navigation". Otherwise, it displays the values from the master data
table.
Hope this should clarify your doubts. Please let me know if you have
questions else please confirm the message at your earliest convenie
Edited by: Abhijit N on Apr 2, 2009 6:06 PM

How Can I reduce Query Execution time with use of filter

Dear Experts,
In a query execution is faster when there is no product filter and these products can be a list contaning mare than 300 items.
I am using In operator for that filter.

Maybe if you posted the quer[y][ies] we could get a better idea.

Finding number of working days during query execution

Hi ,
We have a requirement to calculate number of working days during query execution. In the cube we got "received date", this will be used as a variable in the query. Based on the received date value entered, query needs to display number of products received from past 1, 2,3,4 days (working days should include weekends or public holidays).
1day 2 days 3 days 4 days 5 days
10 12 20 15 20
to me it appears as I need to create virtual key figures.
Regards,
Ramz

Hi ramesh,
First try to create formula variables for start data and end date to calculate the no of working days.
Create a Variable ZSTDT --of type replacement path.
Type of Variable = Formula
Variable Name = ZSTDT
Characteristic = <info object>
For Intervals Use = Select From Value
Offset Start = 0000 Offset Length = 0000
Replacement var with : key
use the same steps to create one more formula variable to get end date.
Now create a formula to get the No of days.
once after getting no of days you can create buckets as per your need.
for more info check the below links
http://www.sd-solutions.com/SAP-HCM-BW-Replacement-Path-Variables.html
http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/30f15839-0cf1-2b10-c6a7-ebe68cc87cdc?quicklink=index&overridelayout=true

Query execution Flow

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