Avoid cubes with single dimension

When designing SSAS CUBE in SQL SERVER BIDS 2008R2 we get a message on the cube object stating "Avoid cubes with single dimension".
We are using just 1 dimension and 1 fact table .
Is there any specific reason for this issue ?
Mudassar

Hi Mudassar,
This rule analyzes cube dimensions to determine whether a cube contains only one cube dimension. Generally, a cube that contains only one cube dimension should have that dimension split into multiple cube dimensions based on logical business entities. Splitting
a single cube dimension into multiple cube dimension will also improve usability in most user scenarios. This is the best practices recommendation from Microsoft when designing dimension. Because under most circumstances, if the cube only contains one dimension,
it means that all the attributes were put into this dimension.
In your scenario, you just use one dimension and one fact table. So you get this warning. And you needn't split the dimension into multiple dimension since there is only one dimension used in your cube.
For more information about how to define dimensions, see
Designing Dimensions in SQL Server Books Online.
Regards,
Charlie Liao
TechNet Community Support

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OWN_HOST:              localhost.localdomain
PARTNER_HOST:          XXXXX
SYSTNR:                00
SYSID:                 XXX
CLIENT:                100
USER:                  8379
LANGUAGE:              S
ISO_LANGUAGE:          ES
OWN_CODEPAGE:          4102
OWN_CHARSET:           UTF16
OWN_ENCODING:          utf-16
OWN_BYTES_PER_CHAR:    2
PARTNER_CODEPAGE:      4103
PARTNER_CHARSET:       UTF16
PARTNER_ENCODING:      utf-16
PARNER_BYTES_PER_CHAR: 2
OWN_REL:               720
PARTNER_REL:           701
PARTNER_TYPE:          3
KERNEL_REL:            701
TRACE:
RFC_ROLE:              C
OWN_TYPE:              E
CPIC_CONVID:           00000000
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+# [OdiSAPBWConn3] num of infoCubes=0+
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Has Anyone have imported a cube with similar number of dimensions?
Any sugestion will be appreciated.
Thank's in advance.

Hi Jyothi,
This error usually comes because of presence of zombie ./ bad request. I would suggest you to check few of the tables and search for your request "REQU_DBCFVY9N1691OYQYNCMUGCSGM" in them if you are able to find it then delete that entry from there, there after you should not face error. Check if the request mentioned above is present in the below mentioned tables? If yes delete them from there.
RSREQICODS, RSTSODS, , RSICCONT, RSODSACTREQ.
Also check if the notes mentioned in the below thread are applicable in your case?
Error when deleting requests in cube
Thanks

Cubes with different dimensions based on the same fact table

I have a fact table (f_a) with three dimensions (dim_a, dim_b, dim_c) and a one measure (m_a).
Is it possible to create cube with only one dimension (dim_a)?
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Of course i can create second fact table with only one dimension, and then creating that cube would be no problem.
But is it possible doing this directly from the primary fact table (without creating second fact table)?
Raf
PS:i use AWM 9.2 to create target cubes. Source cubes i create with OEM 9.2

At the beginning i was confused by the numberous kind of cubes...
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I spent much time until i could see my first sample cube in Discoverer or Excel as a final user should see it. :-)
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Raf

Getting error while deploying a cube with time dimension

Hi,
I created a time dimension using WB with Cal yr and day heirarchy. Designed a cube using both and tried to deploy it. I got the following error.
Appreciate your help..
Name
Type
Status
Log
TIME_CUB1
Cube
Success
VLD-0001: Validation completed successfully.
TIME_CUB1
Description : Runtime User : OWB_REP_OWNER Started : 2006-12-13 15:37:17.0
Name
Action
Status
Log
TIME_CUB1
Create
Error
ORA-06510: PL/SQL: unhandled user-defined exception
ORA-06512: at "OLAPSYS.CWM2_OLAP_CUBE", line 394
ORA-06512: at line 5

Hi,
I'm having problems to deploy this cube (this was the origin of my problem), when I change it to "Deploy Data Object Only", It don't generate code and the cube is not created. This is what I get:
-- Product : Oracle Warehouse Builder
-- Generator Version : 11.1.0.6.0
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-- Modified Date : Wed May 12 08:41:59 CST 2010
-- Created By : edennis
-- Modified By : edennis
-- Generated Object Type : TABLE
-- Generated Object Name : FACT_TMP_SALDOS
-- Comments :
-- Copyright © 2000, 2007, Oracle. All rights reserved.
WHENEVER SQLERROR EXIT FAILURE;
Ideas?
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Creating a cube with more than one dimension

I have been able to create a cube with one dimension using our own data. I am able to view data from this cube in Cube Viewer and in a presentation created with BI Beans in JDeveloper.
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You can use Analytic Workspace Manager 10.1.0.4 to create analytic workspaces (MOLAP) in Oracle OLAP 10.1.0.4. The Model View in this GUI tool utilizes the OLAP AW Java API that was introduced in Oracle OLAP 10g. This Java API fully abstracts the logical dimensional model from physical design.
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OWB Forum:
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Using Pivot-Slicers on a SSAS Cube with Access Rights

Dear all,
we're using a SSAS Cube and try to access the data by an Excel Pivot. That works fine.
Furthermore, we are using the slicer feature of Excel 2010 to select the specified data.
The problem is that we have a dedicated rights concept and only some users are allowed to see all dimension elements. Other users are not allowed to see all the data. This is ok and works for Pivots, as we can see there only the elements which the respective
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Best Regards
Bjoern

Hi Charlie,
I guess we have some kind of language barrier here because i did not fully understand your explanation.
I've got a User Günther who is only to allowed to see the revenues of his own company.
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// Do I perhaps have misplaced the question into the wrong forum?
Best Regards
Bjoern

Cubes - how to extract a single dimension and save it in a table

Hi,
I am new to the cubes concept, although I've used it several times in the past to analyse the data but never explored options beyond that. using excel, I can get different dimentions from the cube such as customer information, location, etc.
is there a way to extract (automatically) a single dimension and save it in a table...? e.g I want to pull customer name and revenues only from the cube, how would I do it?
Thanks

Hi,
tparvaiz wrote:
Hi,
I am new to the cubes concept, although I've used it several times in the past to analyse the data but never explored options beyond that. using excel, I can get different dimentions from the cube such as customer information, location, etc.
is there a way to extract (automatically) a single dimension and save it in a table...? Sure, you can do that.
Say you had a table with many customers, and you were interested in only one of those customers: what would you do? You'd write a query with a WHERE clause that included only the customer you wanted to see.
A cube is a table with many dimensions. You're interested in only one of those dimensions, so what can you do? You can write a query with a WHERE clause to include only the dimension you want to see.
e.g I want to pull customer name and revenues only from the cube, how would I do it?Exactly how to do it depends on the table(s), your requirements and your Oracle version. As the others have said, post a little sample data (CREATE TABLE and INSERT statements to simulate what your real table looks like), and the results you want from that data.
Always say which version of Oracle you're using (e.g. 11.2.0.2.0).
See the forum FAQ {message:id=9360002}

How to tune performance of a cube with multiple date dimension?

Hi,
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Hi amit2015,
According to your description, you want to improve the performance of a SSAS cube with multiple date dimension. Right?
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Problem while adding a new dimension in a existing cube with data in BW3.5

Hi,
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Regards,
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hi,
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OWB10gR2 - Cube with relations to a dimension with more than one hierarchy

Hi,
I have defined a time dimension with two hierarchies. The standard hierarchy with the levels year-> month-> day,
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Hi, i assume this logic is for Dimension formula?
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I am trying to animate a file in photoshop with vanishing point. And when I "Return 3D layer to photoshop", I'll get a cube with dimensions. It´s not what I can see in tutorials, aperfect 3D space. Using win7.

I am trying to animate a file in photoshop with vanishing point. And when I "Return 3D layer to photoshop", I'll get a cube with dimensions. It´s not what I can see in tutorials, a perfect 3D space. Using win7.

An update -
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Dimension Design - Single Dimension with Multiple Hierarchies

Morning,
the purpose of this discussion is to understand how we should design a specific dimension with 3 levels and multiple hierarchies for optimal performance.
We have an institution dimension with the following characteristics:
Characteristics
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Levels:
1. Total Bank (TB) Level
2. Peer Group (PG) Level
3. Institution Level
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2. ALL the hierarchies have a TB level and an Institution level
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Levels:
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Hierarchy 1 PG Level
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Thanks

No, it is not possible to have multiple hiearchies in a PC logical dimension.
The concept of the Parent-Child (PC) hierarchy is completely different from the level-based hierarchy. Specifically the PC hierarchy expects a predefined / architected table with corresponding PC column/value structuring with or without attributes.
Short story even shorter it is not possible.
Longer...
In the RPD the BMM actually prevents you from adding a new logical level, child level, or parent level when you have selected that the logical dimension be a parent child logical dimension with Parent-Child hierarchy.
On another note...
Have you tried architecting/building your PC source table so that it represents the roll-up and bottom child-levels like you are seeking? That is, that same member in the child column more than once having a separate parent value. That should be doable.
That was a great question, please award points if this answered your question or it was helpful.
Cheers,
Christian
http://www.artofbi.com

Issue with loading data into cube with duplicate members in different dimensions

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Users wouldnt like it...
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Tnanx

You may have to use fully qualified name something like
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Regards,
Sunil

How to create an unsolved cube with awm???

hi all,
I readed the "Oracle Olap developer's guide to the Oalp api" and I found there's 2 type of Cube: Solved and Unsolved Cubes. And this document says: "... if all the data for a cube is specified by the DBA, then the cube is considered to be Solved. If some or all of the aggregate data must be calculated by Oracle OLap, then the cube is unsolved ..."
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SH is not a relational OLAP data model which is quite different from the GLOBAL schema which is based on an Analytic Workspace.
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Keith Laker
Oracle EMEA Consulting
BI Blog: http://oraclebi.blogspot.com/
DM Blog: http://oracledmt.blogspot.com/
BI on Oracle: http://www.oracle.com/bi/
BI on OTN: http://www.oracle.com/technology/products/bi/
BI Samples: http://www.oracle.com/technology/products/bi/samples/

BOXIR2 FP4.6 -WebI report with merged dimensions: Incorrect data

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Could you please advice me on this issue.

Hi Hiteshwar,
MaxDate variable returns a maximum of Reservation date from Query 1 i.e. 1/15/01 which is correct. If you put that variable separately it will display that date correctly but you are grouping it along with objects from the query2 thatu2019s why it is displaying correct value for Query 2 where it finds 1/15/01, but for other values WEBI canu2019t group this value as it refers its formula which contains Query 1 reservation date.
Hence we canu2019t say it is displaying values from Query 2 it is taking values from Query1 itself for 1/15/2001 and for remaining values it is taking non matching values from Query 2 with which it is grouping.
If you put that variable with objects from Query1 it wonu2019t display 1/15/01 but all values reservation date from query 1 contains because it is grouping based on reservation date though it is single max value.
Even when you write "=Max(Query 2.Reservation Date) formula and use it with objects from query 1 though it contains so many values it matches (Groups) only the values from reservation date from Query 1.and displays only those values i.e. 1/1/2001 and 1/15/01.
MaxDate returns 1/15/01 as Maximum Date value from Query 1 but Query 2 contains value far more greater than 1/15/01 hense that will be more incorrect data if WEBI displays maxdate as 1/15/01 along with Query 2 objects.
Here we can avoid this behavior by Custom SQL but MaxDate is a report level variable hence we canu2019t edit SQL.
If your data contains some duplicate values WEBI will repeat MaxDate value like
Reservation date     Restaurant           Future_Guests    Total Guests
1/1/01                          ABC                         3                   3
1/15/01                       XYZ                          4                   8
1/16/01                       XYZ                          4                   8
By default, WEBI Groups Total Guests based on the Restaurant and Reservation Date, but if we want we can group those values based only on Restaurant which will duplicate Total Guest values for Restaurant XYZ. But you report contains only one dimension with all unique Values we canu2019t group those.
I hope this is clear.
Thanksu2026
Pratik

Avoid cubes with single dimension

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