Dimension creation in a cube

Hi friends,
what considrations should be takeen while creating a dimension in a infocube?. I want to know what type of cahrs to be included in one dimension to improve reporting performance and also the cube.
Can anyone please tell me or direct me to any documents.
Regards
Ananth.

Hi Ananth,
Here are few points to be considered while you model a cube
Create as many dimensions as possible.
Group similar objects in a dimension
Take care that the dimension table size does not exceed more than 20% of the fact table size.
Create a line item dimension for characterstics like sales document which have a very high granularity ratio.
Check the cardheight option while assigning the dimensions if there are relatively more number of objects in a dimension.
http://help.sap.com/saphelp_nw04/helpdata/en/fb/184538650fb10de10000009b38f842/content.htm
The above link is also much resourcefull.
regards

Similar Messages

Is there any limit in Dimensions creation

Hi Friends, Ques :1 Is there any limit for dimensions creations in Essbase can we create more than 11 dimensions for exampls like a banking project.i want to the limit of dimensions creations? Ques: 2 Once we create a outline[dimesion & members] if client wants to add some more dimension then we create the additional dimension to the existing outline if yes then we add to delete all the data & freshly we had to load the data once again in the cubes. Pls help me friends by solving the above queries? Thanks & Regards 

Hi Syed, Ans1: Theoritically Yes. But if you go on increasing the dimensionsthe number of blocks(if the new dimension is sparse). the block size (if the new dimension is dense) may be theissues. If you are in planning application. there is a limit of 20dimesions.(6-system defined(Account, Entity,Scenario,Version,Timeand Period), 14 custom defined) Ans2: Once you create the outline and if client want to add adimension. you can do that. Whn you are adding new dimension itwill ask which member in new dimension you want to associate tehpresent data. hope this helps.

Problem while adding a new dimension in a existing cube with data in BW3.5

Hi,
We are trying to create a new dimension with new characteristics in a existing cube. But while activating we are getting error that "InfoCube contains data; intentional changes not permitted". Can we add a new dimension in a existing cube with data in BW3.5? If it is not possible then we can take the backup and delete the data from cube and then change the cube. But my question is that, when we will transport the cube with changes to quality then will it transport successfully or same procedure needs to be done there as well.
Regards,
Saikat

hi,
Adding new infoobject /dimension to the cube containing data in 3.5 is not possible.
easier solution is create a new cube similar to old and add the new dimension and proceed.
else you have to drop data and transport.
Ramesh

Creation of Virtual Cube

Hi all,
My requirement is creation of virtual cube based on Function Module.
Would you please tell me what all are the steps need to be done, how to create Function Module,What is the structure of Function Module.
Regards,
K.Krishna Chaitanya.

I think you may be confusing two different concepts. I have provided links to more on both.
1) Extract data into Virtual InfoCubes using function modules
[http://help.sap.com/saphelp_nw04/helpdata/en/e3/e60138fede083de10000009b38f8cf/frameset.htm]
2) Creating function modules
[http://help.sap.com/saphelp_46c/helpdata/en/ea/e9af304c7211d189520000e829fbbd/frameset.htm]

Combining relation facts with dimensions from an Essbase cube

Hi!
I am having trouble combining relational measures (from EBS) with dimensions from an Essbase cube. The dimensions that we want to use for reporting (drilling etc) are in an Essbase cube and the facts are in EBS.
I have managed to import both the EBS tables and the cube into OBIEE (11.1.15) and I have created a business model on the cube. For the cube I converted the accounts dimension to a value based dimension, other than that it was basically just drag and drop.
In this business model I created a new logical table with an LTS consisting of three tables from the relational database.
The relational data has an account key that conforms to the member key of the accounts dimension in the Essbase cube. So in the accounts dimension (in the BMM layer) I mapped the relational column to correct column (that is already mapped to the cube) - this column now has two sources; the relational table and the cube. This account key is also available in the LTS of my fact table.
The content levels for the LTS in the fact table have all been set to detail level for the accounts dimension.
So far I am able to report on the data from the fact table (only relational data) and I can combine this report with account key from the account dimension (because this column is mapped to the relational source as well as the cube). But if expand the report with a column (from the accounts dimension) that is mapped only to the cube (the alias column that contains the description of the accounts key), I get an error (NQSError 14025 - see below).
Seeing as how I have modeled that the facts are connected to the dimension through the common accounts key, I cannot understand why OBIEE doesn't seem to understand which other columns - from the same dimension - to fetch.
If this had been in a relational database I could have done this very easily with SQL; something along the lines of select * from relational_fact, dim_accounts where relational_fact.account_key=dim_accounts.account_key.
Error message:
[nQSError: 14025] No fact table exists at the requested level of detail
Edit:
Regards
Mogens
Edited by: user13050224 on Jun 19, 2012 6:40 AM

Avneet gave you the beginnings of one way, but left out that a couple of things. First, you would want to do the export of level zero only. Second, the export needs to be in column format and third, you need to make sure the load rule you use is set to be additive otherwise the last row will overwrite the previouse values.
A couple of other wats I can think of doing this
Create a replicated partition that maps the 3 non used dimensiosn to null (Pick the member at the top of the dimension in your mapping area)
Create a report script to extract the data putting the three dimensions in the page so they don't show up.
Use the custom defined function jexport in a calc script to get what you want

Detailed analysis about the dimension tables of a cube

Hi Experts,
how can I get a detailed analysis about the dimension tables of a cube? (E.g. how many records include the fact tables, dimension tables and how much percent are these records compared with the whole records of the cube?!)
Thx in advance for your answers!

Hi,
You will get most of the information in LISTSCHEMA transaction code. If you want to see further you can see the records in SE11.
Regards
Githen

Compare all dimensions in all detail cubes

How to Create a way to compare all dimensions in all detail cubes. If discrepancies are identified, then correct the detail cube that has the discrepancy. If a new cube is being built from a master file, the master file needs to be included in this comparison. The comparison needs to run monthly.

The do it yourself approach would be to create "master" cubes, one for each common dimension. These would get rebuilt each month from whatever metadata repository you use. Then, create partitions from them to each of the detail cubes. The partitions could use the first stored member of each dimension in the detail cube that isn't in the master cube, and you would only use them for updating the outline.However, this assumes you aren't into buying an off the shelf tool for handling this. Hyperion Application Builder is able to handle the bulk of this in a more robust (albeit more expensive) way. Look into it and you may find it well worth the expense, as it targets your need very well.

Dimensions for the below cubes.

Hi All,
My interview Q was :
Could you plz provide me the Dimensions for the below Cubes:
0SD_C03, 0SD_C05, 0SD_C01, 0PUR_C01
How to find out the dimensions from the help files?
Any other Dimensions except unit, time n pkg Dim ?? Are there any particular/specific Dim for each of these cubes ?
Thanks in Adv.

Hi,
0sd_c03 having following dimensions by default
Data Package, Time, Unit, Organization, SD Document Category, Customer, Material, Value Type, Version, Sales Area, Document Classification.
install your required infocube's from BI content.
double click on the particular infocube. you can able to see the dimensions available for that infocube's.
hope this help you
regards
harikrishna N

Dimension,Dimension Member,Property and Cube in BPC

I am learning BPC. I've knowledge on relational database.
Please help me in understanding Dimension,Dimension Member,Property and Cube.

Hi,
Please refer to the below link from help.sap:
http://help.sap.com/saphelp_bpc75/helpdata/en/5A/69200C88AA40C9B18844A25259F147/frameset.htm
This link will guide you through all the BPC concepts.
Hope this helps.

Creation of offline cubes from pivot table[Automation]

I have a pivot table on which i can slice data based on 3 different users so i create the offline cube for each of them independently
using Analyse->OLAP Tools->Offline OLAP.
So i need to repeat this process 3 times since each time i only select one user and deselect the other 2 in the offline OLAP offline
cube creation wizard.
My question is that can this process be automated because in case there are ,say 100 users the manual work will be too much.
Can i get information on the plugin in Excel which does the Offline Cube Creation.

Hi,
I have taken the steps that you mentioned.
It works perfectly when the number of dimensions on which i slice data are small(around 10).
However i need to do this operation on around 90 dimensions so as a result i just keep on seeing this:
RUNNING OLAP QUERY ... (PRESS ESC TO CANCEL)
Is there any way out?
Thanks

SSRS Expression Current month in a Fiscal calendar dimension from a SSAS cube

How to create an expression for a default SSRS parameter to a SSAS cube when using i Fiscal Year calendar - and where I want to show current Calendar month and year (for example February 2014)
This is an example of my Time dimension for February 2014:
[Time].[FiscalYMD].[Fiscal_Year].&[2013].&[10]
The fiscal calendar goes from May - May - which means that April 2014
would look like this:
[Time].[FiscalYMD].[Fiscal_Year].&[2013].&[12]
and May 2014 would look like this:
[Time].[FiscalYMD].[Fiscal_Year].&[2014].&[01]
Please advise

Hi HCMJ,
To represent the fiscal calendar, you shift the current date by 4 months back. Then you can do:
="[Time].[FiscalYMD].[Fiscal_Year].&[" & Year( DateAdd( "m", -4, Today() ) ) & "].&[" & Month( DateAdd( "m", -4, Today() ) ) & "]"
It just gets the year and month of '4 months ago'. I have not tested it, but I guess it should work.
Regards
Andrew Borg Cardona

Can't view my Cube and Dimension Data with the Cube Viewer

I'm new in using OWB, i'm using Oracle 10g release1 with OWB R2 also Oracle WorkFlow 2.6.3.
When studying with the steps from the OTN pages (start01, flat-file02, relational-wh-03, etl-mappings, deployingobjects, loading-warehouse and bi-modeling)
the loading was success, i guess...
But when I want to see the data in the cube and dimension, an error occurs.
It says
" CubeDV_OLAPSchemaConnectionException_ENT_06952??
CubeDV_OLAPSchemaConnectionException_ENT_06952??
     at oracle.wh.ui.owbcommon.dataviewer.dimensional.DataViewerConnection.connect(DataViewerConnection.java:115)
     at oracle.wh.ui.owbcommon.dataviewer.dimensional.DimDataViewerMain.BIBeansConnect(DimDataViewerMain.java:433)
     at oracle.wh.ui.owbcommon.dataviewer.dimensional.DimDataViewerMain.init(DimDataViewerMain.java:202)
     at oracle.wh.ui.owbcommon.dataviewer.dimensional.DimDataViewerEditor._init(DimDataViewerEditor.java:68)
     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) "
Can somebody explain what is happening, I really don't understand, when the cube viewer window appears, there's no data in it....
I realy need help with this...

I'm new in using OWB, i'm using Oracle 10g release1 with OWB R2 also Oracle WorkFlow 2.6.3.
When studying with the steps from the OTN pages (start01, flat-file02, relational-wh-03, etl-mappings, deployingobjects, loading-warehouse and bi-modeling)
the loading was success, i guess...
But when I want to see the data in the cube and dimension, an error occurs.
It says
" CubeDV_OLAPSchemaConnectionException_ENT_06952??
CubeDV_OLAPSchemaConnectionException_ENT_06952??
at oracle.wh.ui.owbcommon.dataviewer.dimensional.DataViewerConnection.connect(DataViewerConnection.java:115)
at oracle.wh.ui.owbcommon.dataviewer.dimensional.DimDataViewerMain.BIBeansConnect(DimDataViewerMain.java:433)
at oracle.wh.ui.owbcommon.dataviewer.dimensional.DimDataViewerMain.init(DimDataViewerMain.java:202)
at oracle.wh.ui.owbcommon.dataviewer.dimensional.DimDataViewerEditor._init(DimDataViewerEditor.java:68)
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) "
Can somebody explain what is happening, I really don't understand, when the cube viewer window appears, there's no data in it....
I realy need help with this...

Dimension Security causing SSAS cube to slow down

Hi,
Experiencing problems with with the SSAS cube once its processed. Sometimes takes around 20 mins for the excel to load once you drag down any dimension.The cube has got no calc scripts/named sets etc.It has around 17 dimensions and one dimension(Employer)
has got 46 attributes and another (member)17.Others are pretty small.The Employer dimension is used twice as role playing and the both employer/member have got dimension security applied to it.There are about 6 roles have been set up to restrict access to
members in these dimensions.
The SQL profiler shows multiple "Query Dimension" (mostly for Employer dimension)followed by a lot of "Calculate Non Empty Current"s .Suspect that the delay is due to the dimension security expression evaluation.This only happens
during first access of the cube within a role and it's relatively quick when I'm accessing via a role which doesn't have dimension security applied to it.Is there anyway to automatically trigger this process right after the cube has been processed so that
it doesn't cause agony to the first user?

You could build a cache warmer that connects with EffectiveUserName=YourDomain\user1 on the connection string and loop through each user. But what is your dimension security expression? Maybe we can speed it up.
http://artisconsulting.com/Blogs/GregGalloway

Adding New Dimension In An Existing Cube (Block)

Hi fellows,
Im not an expert so need you feedback.
I am supporting a cube that was built a decade ago using Essbase 6.5. It has 7 dimensions (3 dense, 4 sparse). With the new reporting requirement, I need to add a new dimension to be called "BaseTimePeriod" that seems like a Time dimension but will show the "Constant Dollar" amount calcuation for difference Scenarios.
Since the cube has been there for so long, and the expert that has pioneered that cube is no longer in the company. All of our reports uses API being called in MS Excel to retrieve data from the cube and format it the way the users wanted it to be. As well as 75% of our data are user input using the Essbase Excel Add-in, "lock/send" commands.
My problem now is that, since I need to introduce another dimension for the "Constant Dollar" calculation, is there any way that if I add a new dimension the existing process of uploading data by the users as well as retrieving data through Excel API will not be affected?
I tried to add new dimension in the R&D server that we have when I try to retrieve historical data from the cube in the Excel since there is "BaseTimePeriod" dimension before, the Excel report layout gets affected and inserts a new row placing "BaseTimePeriod" in that cell since this not yet there before. And when I try to upload data through Excel Add-in "lock/send" action, it did allow me unless I put a member from the "BaseTimePeriod" to complete the dimension member combination.
My questions now are:
1) How can I add a new dimension without impact from the historical data?
2) Is there any way to place a default value for the new dimension for the historical data so it would complete the dimension member combination, so whenever I retrieve and upload data there will be no problem?
Any insights related to this questions is highly appreciated. Thanks!
obelisk

If you add the new dimension to a cube that already has data, you should get a prompt when you save the outline to associate the existing data with a member from the new dimension. You will then go into a dense restructure which could take a while, depending on the size of your database. Another option would be to export your data in column format and load it into a relational table in something like SQL or Access, you can then add the new dimension to the export in the relational tool, export it back out to a text file and use a load rule to reload it.
As far as the lock & send and existing reports, in most cases, adding a new dim will result in all of those needing to be updated. This is why we try not to add new dims to existing cubes, especially ones that have been around a while.
Another thing to consider is the impact of adding a new dim. I don't know the size of your existing database, but you are going to increase it by adding a new dim and things like consolidation time and retrievals can be impacted, so you need to test all of this.
You should evaluate why you need a new dim and determine if you can achieve the same result without adding a new dim. While a new dim might be the preference in a new cube design, when dealing with something that has been around a while you might want to be creative and somewhat more compromising if it is the lesser of two evils. If everyone is committed to a rebuild then go ahead and rebuild especially if it's been around a while, there are probably other things that can stand to be cleaned up as well, but if nobody wants to deal with that, then look to see if you can get their without adding a new dim, perhaps a new roll up in a existing dim or an attribute dim. A more thorough explanation of what the business case is would help to provide an alternate solution.

Addine New Dimension In An Existing Cube

Hi fellows,
Im not an expert so need you feedback.
I am supporting a cube that was built a decade ago using Essbase 6.5. It has 7 dimensions (3 dense, 4 sparse). With the new reporting requirement, I need to add a new dimension to be called "BaseTimePeriod" that seems like a Time dimension but will show the "Constant Dollar" amount calcuation for difference Scenarios.
Since the cube has been there for so long, and the expert that has pioneered that cube is no longer in the company. All of our reports uses API being called in MS Excel to retrieve data from the cube and format it the way the users wanted it to be. As well as 75% of our data are user input using the Essbase Excel Add-in, "lock/send" commands.
My problem now is that, since I need to introduce another dimension for the "Constant Dollar" calculation, is there any way that if I add a new dimension the existing process of uploading data by the users as well as retrieving data through Excel API will not be affected?
I tried to add new dimension in the R&D server that we have when I try to retrieve historical data from the cube in the Excel since there is "BaseTimePeriod" dimension before, the Excel report layout gets affected and inserts a new row placing "BaseTimePeriod" in that cell since this not yet there before. And when I try to upload data through Excel Add-in "lock/send" action, it did allow me unless I put a member from the "BaseTimePeriod" to complete the dimension member combination.
My questions now are:
1) How can I add a new dimension without impact from the historical data?
2) Is there any way to place a default value for the new dimension for the historical data so it would complete the dimension member combination, so whenever I retrieve and upload data there will be no problem?
Any insights related to this questions is highly appreciated. Thanks!
obelisk

I tried to add new dimension in the R&D server that
we have when I try to retrieve historical data from
the cube in the Excel since there is "BaseTimePeriod"
dimension before, the Excel report layout gets
affected and inserts a new row placing
"BaseTimePeriod" in that cell since this not yet
there before. And when I try to upload data through
Excel Add-in "lock/send" action, it did allow me
unless I put a member from the "BaseTimePeriod" to
complete the dimension member combination.Essbase must have all (non-attribute) dimensions represented for any data operation to happen. If you think about it, each cell of data represents the intersection of exactly 1 member from each dimension and, behind the scenes, the storage mechanisms are focused on optimizing those relationships. Thus, you can see how the BaseTimePeriod member got added to your retrieve as Essbase didn't know which member from BaseTimePeriod you wanted and made the assumption that you wanted the dimension level member. If you place that dimension level member into your retrieve range (along side any of the other "page" (i.e. filter) fields, the retrieve will not insert a row. The insertion of the row can be extremely hazardous as it pushes the other rows down by one; your end users may be making decisions that effect the existence of your company based on formulas reading those cells and, effectively, the formulas may be referencing data from the wrong row..
My questions now are:
1) How can I add a new dimension without impact from
the historical data?Although my forte is not cube design (I work mostly with frontends to Essbase), most situations I have seen when this happens the historical data is assigned a distinct member within the new dimension (assuming you aren't going to go back and reload the data from the sources and map the data based on the new dimension's values in the dataset.
2) Is there any way to place a default value for the
new dimension for the historical data so it would
complete the dimension member combination, so
whenever I retrieve and upload data there will be no
problem?As stated above, put a member from the dimension, most likely the dimension member itself, into the existing Excel templates.
Good Luck!
Tim Tow
Applied OLAP, Inc

Dimension creation in a cube

Similar Messages

Maybe you are looking for