Aggregates for cube

HI,
How can we goahead for creating Aggregates for cube.
IF large amount of data in cube or any other cases.
Reg,
Paiva

Hi,
An aggregate is a materialized, aggregated view of the data in an InfoCube. In an aggregate, the dataset of an InfoCube is saved redundantly and persistently in a consolidated form into the database.
Advantages: It speeds up the query performance because the query when executed first looks at the aggregate for data. If the data is not found it is then that the data from cube is fetched.
Disadvantage:We need to maintain the aggregates each time a data load is done. The aggregate occupies space on the database.
To go or not to go for aggregates primarily depends on the query performance. If the query performance is good and the response time is goodthen the aggregates are not needed.
For more info refer:
http://help.sap.com/saphelp_nw04/helpdata/EN/7d/eb683cc5e8ca68e10000000a114084/frameset.htm
check this links u will get idea abt aggregates
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/3f66ba90-0201-0010-ac8d-b61d8fd9abe9
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/e55aaca6-0301-0010-928e-af44060bda32
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/cbd2d390-0201-0010-8eab-a8a9269a23c2
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/2299d290-0201-0010-1a8e-880c6d3d0ade
and check
Refer this thread for for info:
https://www.sdn.sap.com/sdn/collaboration.sdn?contenttype=url&content=https%3A//forums.sdn.sap.com/topusers.jspa%3FforumID%3D132
Re: Performance ....InfoCube and Aggregates
-Shreya

Similar Messages

Help!Create Aggregates For Cube 0C_C03 Ocurs Eror

When I create a aggregate for cube 0ic_c03, and fixed value to characteristic '0PLANT', Error occurs as following: ,how can I do?
'acna': InfoCube '0IC_C03 contains non-cumulatives: Ref. char. 0PLANT not summarized
Message no. RSDD430
Diagnosis
InfoCube 0IC_C03 contains key figures that display non-cumulative values. The non-cumulative values, however, can only be correctly calculated, if the aggregate contains all characteristic values of the reference characteristics (the characteristics for the time slice).
System response
The aggregation level was set to 'not aggregated' for the reference characteristics.

Hi Shangfu,
Info cube 0IC_C03 consists of non-cumulative key figures which means breifly the values are aggregated in run-time based on Time characteristics.
Include time characteristics "0CALDAY" as part of the aggregate in addition to "0PLANT" object to avoid this problem.
There are many OSS Notes explaining the purpose and usage of Non-cumulative key figures.
Cheers
Bala Koppuravuri

Aggregates for Cubes in Production

Hi,
My client has a few cubes in the production system that they would like to improve performance in. I was planing to build aggregates for them. Is it okay to build aggregates for Cubes already in the Production System, do i have to do anything before i transport the aggregates in the Production system (such as delete all data from Production)?
Thanks

Hi Dave,
Dependant on your Prod rights, you should be able to do it directly on the PROD box.
In most cases you would start of with looking at aggregate proposals from the system. With DEV data this would most likely never apply to PROD as well, as the one is test and the other live data.
Most clients always apply directly in PROD. You don`t need to reload or delete data. Just fill the created aggregates manually before the batch runs at night for safety sake...
And don`t collapse as yet! You could always delete the aggregates...but having the collapse set on as well, compressed data can not be altered or reverted on if required after wards.
Martin

Aggregates for inventory cube

hello
Can I use aggreagates for inventory cube (non-cumulative)?
thanks

Hi,
yes, you can suggest the aggregate for non cumulative (inventory cube) but with special care of time char. You need to include all time char in aggregates.
also see the help doc for details on how to use aggregates with non cumulative data model.
Dev

Problems of using of Aggregates for Transactional Cube

Hi,
Are there problems or disadvantages of using of Aggregates for Transactional Cube?
Tx.
AndyML

Hi,
have a look at SAP's docu: http://help.sap.com/saphelp_nw04/helpdata/en/c0/99663b3e916a78e10000000a11402f/frameset.htm
/manfred

How to create suitable aggregates for queries on multiprovider ?

hi all,
goal reduce db time of query and improve performance
i have queries on a multicube. I have 5 cubes under the multiprovider. I having performance issue with one of the cubes. it had
high slection/transfer ratio. The same cube had high 94% DB TIme. All the BW and DB indexes and stats are green. I chose
the path of aggregates. when i tried suggest from proposal it is giving me query time and date range and i gave last
3 days and query time 150 sec. it is suggesting huge number of aggregates like 150 of them and not getting reduced much
when i tried optimize funcitonality.
The faulty cube had nearly 9 million records and 4 years of data
1. generally how many aggregates do we need to create on a cube?
2. how do i use propose from last navigation? it is not creating any aggregates
3. is there a way for system to propose less number of aggregates?
4. if nothing works i want to cut the volume of the aggregates base on years or quarters. how do i do that?
i created with time charactersitic 0calquarter and dragged in ocal day and 0calmonth. activated and filled in ..but
query is not hitting it when i do a monthly selection. i tried bringing in all the other dimensions...except line item
dimenisons....no use ...it is not hitting the manual aggregates in RSRT.the slection on 0calquarter is * .
5. should i change it to fixed value and bring in the line items too and create it?
6. I wanted to try propose aggregate from query option..but my query is on multiprovider...and not able to copy it to cube..
plz help me how to find the suitable aggregates for query on multiprovider
7. should i create any new indexes on the cube using the chractrestics in the where condiotion of select statment...but in
that case, select statement changes with drill down.......how do i handle it ?
8. how will i make sure the aggregates work for all queries run time imporvement?
9. plz suggest other approaches if any with procedures
this is a urgent problem plz help...
thanks in advance
points will be assigned for inputs

1. generally how many aggregates do we need to create on a cube?
it depends on your specific needs, you can need none or several.
2. how do i use propose from last navigation? it is not creating any aggregates
Can you elaborate?
3. is there a way for system to propose less number of aggregates?
In any of the menus of screen for creating aggregates you have an option for sytem propose aggregates for one specific queries i am not sure it worked with multicubes.
4. if nothing works i want to cut the volume of the aggregates base on years or quarters. how do i do that?
You should delete 0calday from aggregates in order to accumulate data for any greater time unit. Other solution for times is to study try to do a partition in cube.
5. should i change it to fixed value and bring in the line items too and create it?
Can you elaborate?
6. I wanted to try propose aggregate from query option..but my query is on multiprovider...and not able to copy it to cube..
Answered before, maybe you can create a query only with data on that cube that appears in multicube query in order to proposal any aggregate in thath cube.
7. should i create any new indexes on the cube using the chractrestics in the where condiotion of select statment...but in
that case, select statement changes with drill down.......how do i handle it ?
is not recomendable create new indexes in multidemensional structures. Try avoid selections for navigational attributes, if necesary add navigate attributte as dimension attributes, put filters in filter section in BEX.
8. how will i make sure the aggregates work for all queries run time imporvement?
try transaction st03
9. plz suggest other approaches if any with procedures
Some other approches yet answering
Good luck

How to know Whether Partition is done for Cube or not

Hi All,
I need information regarding Partition of a cube.
a)How do i know the Partition is done or not for Cube
b)On what basis we should make parttion of Cube.
Thanks and Regards,
C.V.

There are several threads on partitioning, so it would be a good start for this question (as with any question) to search the BI forums on "Partitioning" and review thsoe first.
Some basic considerations on partitioning -
- Your DB must support Range partitioning to permit partitioning your InfoCube. The option will be greyed out if it is not available.
- InfoCube must be empty to be partitioned.
- InfoCube can only be partitioned on 0FISCPER or 0CALMONTH. You can define it so that you have a partition for each month/fiscper, or so that each partition will hold a few or several months of data.
- Generally, you would not partition small cubes.
- Thru BW 3.5 Aggregates automatically get partitioned the sme way the InfoCube is partitioned as long as the partitioning characteristic is in the aggregate. In 2004s, I believe you have options as to whether an aggregate gets partitioned or not.
- Partitioning may be done for query performance reasons and data administration. If the queries on the InfoCube regularly run with restrictions/filters on the partitioning characteristic (FISCPER or CALMONTH), the database will "prune" any partitions that do not contain the FISCPER/CALMONTH value(s), so that it does not need to consider them , e.g. most of your users only run a sales query for the current and previous month, but your cube contains 3 years of data. By partitioning on CALMONTH (we'll assume 1 partition / month), the database will exclude all but the two partitions from consideration. This could help query performance a lot. or maybe only a little, depending on a variety of other factors.
Again - it is important that the queries restrict onthe partitioning characteristic to be of any value on query performance. So don't partition on FISCPER if all the queries use CALMONTH for restrictions.
The data adminsitration reason you might partition is to improve selective deletion or archiving time. These processes are capable of using a DB function to Drop the partition, which quickly removes the data from the cube, rather than having to run a resource intensive Delete query. This only happens if you deletion/archiving criteria is set to remove an entire partition of data.
Again - review the other threads on the BI forums on Partitioning. Most questions you have will already have been asked and answered before, and post again on SDN if there is something you still have a question about.

Aggregates for master data & Line item Dimension

Hi i have question
1 Can we create Aggregate for Master Data?
2 Can we create Aggregate with Navigational Attributes?
3 Can we create Aggregate with Line Item Dimension?
4 How many dimension we can add with how many characteristics in it if we create a new Aggregate

1 Can we create Aggregate for Master Data? - No
2 Can we create Aggregate with Navigational Attributes? - No
3 Can we create Aggregate with Line Item Dimension? - No
4 How many dimension we can add with how many characteristics in it if we create a new Aggregate - You can create a maximum of 13 dimensions in the cube.You can add as many characteristics for an aggregate,adding many characteristics in the aggregate is as good as having the query fetch data from the Cube instead of the aggregates.
Aggregates are subsets infocubes derived from the main InfoCube to increase the query performance.You can create as many aggregates you want in an InfoCube.
For each aggregate,internally dimensions are created based on the selected characteristics.
Take a look at this link for detail information...
http://help.sap.com/saphelp_nw04/helpdata/en/7d/eb683cc5e8ca68e10000000a114084/content.htm

Aggregates in CUBES

Hi,
Im trying to create aggregates in Cubes. I right click and go under "Maintain aggregates" . I choose the option for the system to generate them for me, when i do that a window pops up " SPECIFY STATISTICS DATA EVALUATION" what dates am i supposed to put in there for "FROM" im putting todays date, and for "TO" do i put 12/31/9999 ? What is this for?
Also what can i do to improve a DSO's performance?
Thanks

Hi............
Do you have secondary indexes on your ODS?
As mentioned above.........that will be the best way............
I think you want to improve DSO performance to improve query performance...........if so......its a good way to proceed would be to have your reporting based on the InfoCube, or MultiProviders based on these InfoCubes .
But this will be a bit of development work, and you will have to move the queries from the ODS to Cubes, deal with workbooks etc.
Then you can also create aggregates..........because you cannot create aggregates on ODS........
Check OSS Note 444287
Using ODS will be performance hit in terms of Activation Time , Report Excution Time ( Tabular Reporting ) . Better to load the data from these ODS to Indiviual Cubes .......and then create a multiprovider of them and then report out from multiprovider . Since reporting from Multi-dimensional Structure is faster than Flat table reporting...
Also check this link
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/afbad390-0201-0010-daa4-9ef0168d41b6
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/cccad390-0201-0010-5093-fd9ec8157802
Regards,
Debjani.......
Edited by: Debjani Mukherjee on Sep 26, 2008 8:07 AM

ENT-06954: Error while Displaying BIBean for Cube/Dimension Dataviewer.

Hi all,
I have defined a cube with three dimensions. All elements are deployed and the mappings is executed successfully. If I try to open the dataviewer either for the cube or for the dimensions I receive the following errors:
ENT-06954: Error while Displaying BIBean for Cube Dataviewer.
     at oracle.wh.ui.owbcommon.dataviewer.dimensional.CubeDataViewerMain.getDataviewObject(CubeDataViewerMain.java:391)
     at oracle.wh.ui.owbcommon.dataviewer.dimensional.CubeDataViewerEditor._init(CubeDataViewerEditor.java:66)
     at oracle.wh.ui.editor.Editor.init(Editor.java:1115)
     at oracle.wh.ui.editor.Editor.showEditor(Editor.java:1431)
     at oracle.wh.ui.owbcommon.IdeUtils._tryLaunchEditorByClass(IdeUtils.java:1431)
     at oracle.wh.ui.owbcommon.IdeUtils._doLaunchEditor(IdeUtils.java:1344)
     at oracle.wh.ui.owbcommon.IdeUtils._doLaunchEditor(IdeUtils.java:1362)
     at oracle.wh.ui.owbcommon.IdeUtils.showDataViewer(IdeUtils.java:864)
     at oracle.wh.ui.owbcommon.IdeUtils.showDataViewer(IdeUtils.java:851)
     at oracle.wh.ui.console.commands.DataViewerCmd.performAction(DataViewerCmd.java:19)
     at oracle.wh.ui.console.commands.TreeMenuHandler$1.run(TreeMenuHandler.java:188)
     at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:178)
     at java.awt.EventQueue.dispatchEvent(EventQueue.java:454)
     at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:201)
     at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151)
     at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:145)
     at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:137)
     at java.awt.EventDispatchThread.run(EventDispatchThread.java:100)
ENT-06972: Error while Displaying BIBean for Dimension Dataviewer.
     at oracle.wh.ui.owbcommon.dataviewer.dimensional.DimDataViewerMain.getDimensionListObject(DimDataViewerMain.java:479)
     at oracle.wh.ui.owbcommon.dataviewer.dimensional.DimDataViewerEditor._init(DimDataViewerEditor.java:89)
     at oracle.wh.ui.editor.Editor.init(Editor.java:1115)
     at oracle.wh.ui.editor.Editor.showEditor(Editor.java:1431)
     at oracle.wh.ui.owbcommon.IdeUtils._tryLaunchEditorByClass(IdeUtils.java:1431)
     at oracle.wh.ui.owbcommon.IdeUtils._doLaunchEditor(IdeUtils.java:1344)
     at oracle.wh.ui.owbcommon.IdeUtils._doLaunchEditor(IdeUtils.java:1362)
     at oracle.wh.ui.owbcommon.IdeUtils.showDataViewer(IdeUtils.java:864)
     at oracle.wh.ui.owbcommon.IdeUtils.showDataViewer(IdeUtils.java:851)
     at oracle.wh.ui.console.commands.DataViewerCmd.performAction(DataViewerCmd.java:19)
     at oracle.wh.ui.console.commands.TreeMenuHandler$1.run(TreeMenuHandler.java:188)
     at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:178)
     at java.awt.EventQueue.dispatchEvent(EventQueue.java:454)
     at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:201)
     at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151)
     at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:145)
     at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:137)
     at java.awt.EventDispatchThread.run(EventDispatchThread.java:100)
In another warehouse this function works properly. I am using OWB 10gR2 (10.2.0.1.31).
Any hints to fix this issue would be appreciated.
Thanks in Advance, C.

If you run OWB using the supplied shell script or batch file are there other errors on the console before the exception. OWB uses a component (OLAPI does some validation over and above any other) which dumps the errors on the the standard output which often illustrates some invalid metadata in the OLAP catalog.

How to create infopackage for Cube to Cune to transaction

HI Experts
I have performed following steps for cube to cube load.
1. Created source cube and loaded the data from R3
2. Created Destination cube
3. Generated Export Data source for the source cube. Here I'm able to see my datasource Icon(8ZFIGL_C01). When I double click on that it is give details.
4. Defined the update rules for Destiination cube by assiging the infosource (8ZFIGL_C01) which is created in step3.
5.Now I'm searching for the infosurce (8ZFIGL_C01) in data modelling -> infosource. its not showing up any name with 8ZFIGL_C01.
Kindly let me know how to create infopackage for this to laod the data from cube to cube.
Additional information:
I have set the optopn Display Generated Object in Settings.
Thanks in advance for your help.
Regards
NLN

Hi,
Right Click on "Infosource" (TA RSA12 Top at the Right side Panel) and choose Insert lost nodes and refresh the screen and now search for your infosource and you will find it.
See solution from SAT:
Problems with Infosource Data Marts
Best regards,
Frank

BI beans does not use QUERY RERWITE for cube

Hello!
First of all I would like to say big thanks to Keith for help on dimension rollup. It works now.
I am creating a pilot environment with
Oracle 10.2.0.3
OWB 10.2.0.3
SS Add-in 10.1.2.2
and one cube ST_R and three dims
DIM_R_NOMA for products
DIM_R_CIDI for stores
DIM_R_TIME for time
Now I have deployed dimensions and cube to CWM2. Dimensions are working quite well. I would say even better than in MOLAP. About 1 second for rollup on 2000 members in level.
Now I am facing second problem. I can not force BI beans (which is used in SS Add-in and Disco and OWB browser) to use summaries prepared by DBMS_ODM package.
1/ I have prepared MV LOGS for dimension and fact tables
2/ I have prepared MV for dimensions using DBMS_ODM
3/ I've prepared materialized view for cube aggs. with
DBMS_ODM.CREATESTDFACTMV('WWHH','ST_R','ST_R.sql','C:\TEMP',true,'FULL');
CWM2_OLAP_CUBE.set_mv_summary_code('WWHH','ST_R','GROUPINGSET');
as described in OLAP REFERENCE on DBMS_ODM page.
I explained all my MVs - they seem to be OK. They support
REWRITE_GENERAL,
REWRITE_FULL_TEXT,
REWRITE_PART_TEXT
There are no support for PCT rewrite etc.
My user 'WWHH' has a privileges:
ANALYSE_ANY
QWERY_REWRITE
GLOBAL_QWERY_REWRITE
My database has setting
QUERY_REWRITE_ENABLED=true
Stale_tolerated=enforced
all MVs and tables are analyzed.
I do not use parallel settings on tables,MVs.
to do some further analisys I've enabled olapcontinuous_trace_file. It generates some useful SQL statements from BI BEANS in UDUMP. These statements DO NOT resolve in MAT VIEW in explain plan
Questions:
Are there any settings for BI BEANS to turn on/off?
Are there any other packages to create MVs?
How to explain WHY MVs are not used?
THanks everybody for cooperation.
Regards,
Kirill Boyko

Keith,
Thank you for response.
I refreshed metadata, but no result. Again, dimensions are OK, but not cube. I am attaching explanation why it did no rewrite. This explanation is coming from
dbms_mview.Explain_Rewrite
QSM-01150: query did not rewrite
QSM-01263: query rewrite not possible when query references a dictionary table or view
QSM-01284: materialized view MV1125 has an anchor table DIM_R_TIME_V not found in query
QSM-01102: materialized view, MV1125, requires join back to table, DIM_R_CIDI_V, on column, REGION_ID
QSM-01219: no suitable materialized view found to rewrite this query
QSM-01284: - is wrong. I have DIM_R_TIME_V in MView.
Here is my MVIEW script from database:
SELECT
FROM
WWHH.CAWHTB2 a,
WWHH.DIM_R_CIDI_V b,
WWHH.DIM_R_NOMA_V c,
WWHH.DIM_R_TIME_V d
WHERE
b.STORE_ID = a.CIIDCA AND
c.ARTICLE_ID = a.NMIDCA AND
d.DAY_ID = a.CLIDCA
GROUP BY GROUPING SETS ( ...)
Could you tell me where to check in metadata that MVIEW is correctly setup?

No records for cube in production!

Hi,
we have a strange ituation where in i am finding records for a cube in dev but not in production!
i had transported right from infoobjects ( which i had added in dev for cube enhancements ) to update rules to production but still i did not find any records in production!
can u pls tell me what could be the problem? or i had missed something in transportaion?
Thanks,
Ravi

Hi,
I don't understand.... Do you expect to see the same records in your cube in your prod sys than in your deve sys just by transporting the change?
No: you have to load your cube with data in prod!
or do you think that when adding a new IObj in a cube and transport the changes then the new IObj will be populated?
No either, you'll have to reload your data.
please describe in detail your issue
hope this helps...
Olivier.

Best Practice For Cube Design

All,
First post here and was wondering if anyone out there has a best practice for cube design or optimisation. Currently have 7 Cubes that have been populated for the last 6 months and am now looking at ways of speeding up their population.
Are there any hard and fast rules about dimensions?
Should they be kept to a percentage of the fact table?
When should line item dimensions be used?
Regards
Gary Boyle

Hi Gary,
Ideally the DIM tables should be 20% of the fact table and preferably less. You can check the size ratios in RSRV using the Database tables test > Database info about InfoProvider tables. Line items dimensions should be employed where the char has a large number of unique values (like 0MATERIAL, or 0CUSTOMER), so that anothe DIM ID is not created, but the SID values are used directly in the Fact Table.
See these for more:
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/media/uuid/10b589ad-0701-0010-0299-e5c282b7aaad
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/08f1b622-0c01-0010-618c-cb41e12c72be
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/6ce7b0a4-0b01-0010-52ac-a6e813c35a84
Hope this helps...

Bi 7.0 for cube and master data steps

hi friends,
can u give me step by step comparision between bi 7.0 and bi 3.0 for cube ods and master data, ple explaing me what are the steps difference for those in bi 7.0 .
and reporting is same or any difference in bi 7.0 .
other than sap.help.com material, if u have any other or any screen shots. ple send me.
Thanking u
suneel.

what abt master data, in master data we are using only transfer rules, here also we are using transformation and dtp again.
Yes we would be using transformations and DTP's on the masterdata too. but the system would prompt to make IO a infoprovider in order to use the new functionality. There is another work around for it, but we can discuss it later, orelse search the forum for that option, i have replied to couple of questions regarding that.
what abt reporting any things other than calculated kf restricted kf, filters rows columns, free chaststics, variables, any chnages in screen.
The basic functionality of all the above mentioned objects havent changes, and the query designer itself, there are hell a lot of changes in the appearance and it will take a while to get used to it and find your way with all the functionalities.
i have doubt bps menas businees planning simulation what is this, bec i have idea we can use transactional cube and transactional ods for write accress for planninmg also
BPS is something I have no clue abt... (you dont see me answering in Business planning forum)

Aggregates for cube

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