How to refresh OLAP Cubes in AWM?

Right click on the cube in AWM and select 'Maintain Cube ...' from the menu to bring up the 'Maintenance Wizard' dialog. Then just follow the instructions on screen.

Similar Messages

How to create olap cube using Named Query Table in Data source View

I Create on OLAP Cube using Existing Tables Its Working Fine But When i Use Named Query Table with RelationShip To other Named query Table It Not Working .So give me some deep Clarification On Olap Cube for Better Understanding
Thanks

Hi Pawan,
What do you mean "It Not Working"？ As Kamath said, please post the detail error message, so that we can make further analysis.
In the Data Source View of a CUBE, we can define a named query. In a named query, you can specify an SQL expression to select rows and columns returned from one or more tables in one or more data sources. A named query is like any other table in a data source
view (DSV) with rows and relationships, except that the named query is based on an expression.
Reference:Define Named Queries in a Data Source View (Analysis Services)
Regards,
Charlie Liao
TechNet Community Support

How to use OLAP cubes in Crystal Reports R2?

Dear All,
I hope someone can help me with the following issue: We are trying to link Crystal Reports XI-R2 with an OLAP cube but the login keeps on failing while the same setup/connection works with Excel.
The OLAP cubes are created through SSAS 2008 and require a windows account for authentication. Because it works via Excel (through pivot table --> external data) the cubes are accessible and the username & password are correctly as well.
Through the OLAP wizard in Crystal Reports the following message is displayed: "The connection could not be established. The logon attempt failed".
Thank you in advance.

Hi,
Please check the trouble shooting guide in this article: /people/reuben.cox/blog/2009/12/10/troubleshooting-olap-connectivity-in-business-objects-products
If, after performing these tasks, it still doesn't work, please reply back to this thread with more details about what you have tried and what doesn't work.
Reuben

How to get OLAP cube objects size info?

Hi,
I am new at OLAP cube.
I want to know OLAP Cube objects size information like VIEW.
is any query to get size of Cube objects?
Please help me out on this.
Thank you,
Nitin

Nitin,
This will give you some idea.
*(1). Size of the whole AW:*
select dbal.owner||'.'||substr(dbal.table_name,4) awname,
to_char(round(sum(dbas.bytes)/1024/1024, 1), '999,999.9') as mb, dbas.tablespace_name, logging
from dba_lobs dbal, dba_segments dbas
where dbal.column_name = 'AWLOB' and dbal.segment_name = dbas.segment_name
group by dbal.owner, dbal.table_name, dbas.tablespace_name, logging
order by sum(dbas.bytes) desc
*(2). Size of internal objects:*
Each cube has an associated _STORED variable and a 'PXX' partition.
_PRTCOMP is cube's partition's composite dimension.
_AGGMAP is the aggregation map that is used during aggregation of data.
Replace table AW$BNSOLAP with the name of your AW table.
select partname,
round(sum(dbms_lob.getlength(awlob))/1024,0) KB
from bawolap.aw$bnsolap
where extnum = 0
group by partname
order by kb desc
+;+

Drill-through from 1 OLAP Cube to another.

Hi.Is it possible to drill-through from 1 OLAP Cube to another OLAP cube for AWM?Thanks!

Where are you in the process ?
If you don't have build the metadata for OLAP, do it first.
Here a beautiful example :
http://www.oracle.com/technology/obe/olap_biee/index.html
Once you can query your OLAP cube, create all the join in the physical layer for your ROLAP source.
Drag and drop the ROLAP fact measures on the measure of the OLAP cube
and add the ROLAP column dimension table to your OLAP dimension table.
At this point, you can then create the new ROLAP level in your dimension.
Just add the new ROLAP dimension column in the presentation layer and you're done.
The trick is that normally you don't have the same dimension column in your MOLAP and ROLAP environment.
In this way, OBIEE will choose the good dimensional schema (ROLAP or MOLAP).
Cheers
Nico
Edited by: gerardnico on Jul 29, 2009 3:25 PM Modify the trick with dimension column

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 ..."
I tried with awm 10.2.0.3.0A to create an unsolvedCube but I can't. All cubes I created are solvedCube. To know if a cube is solved or unsolved, I wrotte an program in Java to read informations of package mtm.
Some one can tell me how to create an unsolved cube with AWM ou other soft please!

SH is not a relational OLAP data model which is quite different from the GLOBAL schema which is based on an Analytic Workspace.
If you change the aggregation method you will need to re-compute the whole cube which can be a very big job! You might be able to force the unsolved status be de-selecting all the levels on the Rules tab in AWM. However, I think by default analytic workspace OLAP models always provide a fully solved cube to the outside world. This is the nature of the multi-dimensional model.
Relationally, as keys are located in separate columns a cube can be unsolved in that the key column only contains values for a single level from the corresponding dimension tables. If more than keys for different levels within the same dimension appear within the fact key column then the cube is deemed as being solved.
Therefore, I am not sure you are going to get the information you require from the API. To changes the aggregation method you will have to switch off all pre-compute options and also disable the session cache to prevent previously calculated data being returned when you change the aggregation method.
Hope this helps
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/

Refresh ORACLE OLAP cube

I am new at Oracle OLAP programming, and just wanted to know about Cube´s Data Update. For example, right now I maintained and processed the cube for 2012 data; 2013 data is ready on the fact table and I need to include it on the cube as well...
Thanks!

Are you having any issue loading 2013 data into your cube, using AWM "Maintain Cube" option?
The default cube loading behavior is to add new data during each cube build and keep existing data (unless it is overridden in a cell).
Take a look at the sql script generated by AWM. As long as there is no CLEAR command in it, then your 2012 data will not be cleared.
You can write your own DBMS_CUBE.BUILD statement.
DBMS_CUBE.BUILD procedure provides many ways of loading cube data (as well as dimension refreshes), without using AWM:
http://docs.oracle.com/cd/E11882_01/appdev.112/e16760/d_cube.htm#CHDFIFIA
If you search this forum for "DBMS_CUBE" (select Forum = 'OLAP' and Date Range = 'ALL') , you will find lot of examples for loading cubes and dimensions.
Some examples are:
Mapping to Relational tables
Re: Enabling materialized view for fast refresh method
DBMS CUBE BUILD
Since you are new to all this, initially you should use AWM for all maintenance, and use the scripts generated by it.
Only if you come to a point where AWM cannot be used for something, then write your own DBMS_CUBE.BUILD statement.
.

How to Create a OLAP Cube in DEV using SSAS from Raw file system backup from Production?

How to Create a OLAP Cube in DEV using SSAS from Raw file system backup from Production? I dont have a .abf file available. Two paritions in production are missing data. We were able to get back file system backup which contains the files for these two paritions.
How do I create a cube in Dev using this file system backup.
we are on SQL Server 2008R2.
Thanks,

How to Create a OLAP Cube in DEV using SSAS from Raw file system backup from Production? I dont have a .abf file available. Two paritions in production are missing data. We were able to get back file system backup which contains the files for these two paritions.
How do I create a cube in Dev using this file system backup.
we are on SQL Server 2008R2.
Thanks,

Can a OLAP Cube be Processed in to RAM , Can this be done using Traditional BI ? , If we can place the entire SSAS Cube in RAM for better performance , how can it be done?

I'm trying to increase the performance of my OLAP Cube and i thought placing the CUbe entirely in RAM can solve this problem. can anyone please answer me , if this can be done using Traditional BI i.e SSAS and how?

Hi Nagarjuna:
I do not believe you can load the entire cube into RAM and even if you were able to do so, I don't think you'll be able to solve you performance issues.
Here is a thread with the same discussion and it has some good links that you can visit to learn more about where the performance issues are emanating from -
How to cache all SSAS 2008 cube processed data into RAM
Also, please tale a look at the followoing guide - Analysis Services Performance
Guide
Hope this helps.
Faisal Muhammed My Blog

How to reduce CPU Utlisation while working with OLAP Cubes?

Hi All,
I am working on OLAP cubes on MS SQL Server 2005. I have imported the same in the OBIEE rpd and when I query it in answers, the CPU Utilisation increases to 98%.
So the results also take pretty much time to get displayed.
Is there any other method with which I can reduce the CPU usage?
Regards,
Apoorv

Sorry, but that's like asking "My Data Warehouse is slow! What can I do?!".
Starting from the top of the food chain it depends on:
- how your report is built
- what the logical SQL is that this report fires against the BI server
- your logical business model
- your physical model in the rpd
- whether you use BI server aggregation or external aggregation for the cube source columns
- the structure of your cube
- whether your cube is pre-aggregated or not
- whether you did any performance tuning or your cube
...and tons of other things. I can query 5 dimensions with thousands of dynamic and shared members against dynamic accounts (not stored) without performance impact if I'm hitting an optimized cube (or area of my cube) but have > 1min performance for another comparatively simple query which queries a non-aggregated cube and does aggregation within the BI server (just as an example).
Start by verifying that your cube is nicely built.

OLAP help: How to query a table in a OLAP cube

Hello,
I'm completely new in OLAP (even if I participated to cube creations), and I think a know well PLSQL.
We are on 10g v2.
OLAP cubes have been created with dimensions and tables.
It's possible to see and use the cubes under the AWM
I would like to know if it's possible to access a table within a cube directly from SQLPlus?
I thought about querying table all_objects ... but I didn't see anything good !!
I am stuck !!
Are the cubes saved in the same DB as the relational standard objects ?
I hope that you can give me some help... or provide me with good URLs ...
Thanks in advance,
Olivier

Hello Maxim,
Thanks for your reply..
I looked at the doc you gave, and also I am now able to get the names of cubes and dimensions :
The cubesselect aw_owner||'.'||aw_name||'!'||aw_logical_name cube
from olapsys.ALL$OLAP2_AW_CUBES
order by cube;
The dimensionsselect aw_owner||'.'||aw_name||'!'||aw_logical_name dimension
from olapsys.ALL$OLAP2_AW_DIMENSIONS order by dimension;
So, I start to figure out where I would like to go ...
But, in the doc, there is a lot of CREATE commands ....
I'm puzzled !! ... Do I have to create objects in sqlplus (views or something else) prior to query a table ?
Also, when I see the dimensions in table olapsys.ALL$OLAP2_AW_DIMENSIONS ...
Is it possible to DESC these "tables" or make a SELECT ?
Thanks,
Olivier

Please help: how to connect to SQL Server Analysis Service (OLAP cube) with Crystal Re[ort XI

I'm trying to connect to an OLAP cube on our SQL Server 2005 machine which is running Analysis Services (9.0). When I am trying to use the Crystal Reports menu follow steps mentioned below:
1) New report -> Standard Report Wizard
2) Create New Connection -> OLAP -> Add
Source Type: MS OLE DB Provider fir Analysis Service 9.0
But when I click buttone 'Test', CR prompt me: The connection could not be establiched. Faild to set properties.
HOWEVER: I can connect SQl Server Analysis Server with Excel and other Report tools.
Our softwares are as mentioned following:
- OS: Windows 2003 Server
- SQL Server: SQL Server 2005 Enterprise
- Crystal Reports XI Release 2 Developer Edition
And SQL Server & Crystal Report are running in the same PC.
Any help?

Please re-post if this is still an issue with your OLAP Connectivity please post to Business Objects » Other Business Objects Products Forum or purchase a case and have a dedicated support engineer work with you directly

11g OLAP cube MV's with Query Rewrite option

Hi All,
I am trying to test the 11g OLAP cube MV's with the Query Rewrite option.
I had created a cube on the schema OLAPTRAIN problem by oracle. I an selected necessary options in 'Materialized Views' tab of the Cube definition in AWM. here is the screenshot
!http://i40.tinypic.com/9jzpte.png!
and then I try to run the SQL query
select SUM(S.QUANTITY) AS QUAN,
SUM(S.SALES) AS SALES,
T.CALENDAR_YEAR_NAME,
P.DEPARTMENT_NAME,
C.COUNTRY_NAME
FROM
TIMES T,CUSTOMERS C,PRODUCTS P, SALES_FACT S
WHERE
C.CUSTOMER_KEY = S.CUSTOMER AND
T.DAY_KEY = S.DAY_KEY AND
P.ITEM_KEY = S.PRODUCT
group by T.CALENDAR_YEAR_NAME, P.DEPARTMENT_NAME, C.COUNTRY_NAME;
and observed the Explain plan, it is not using OLAP cube built, instead it is using the relational tables given in the above sql query.
Also, i have observed that , though enabling or disabling of the Query Rewrite option doesn't make any change in the Explain query for the above query.
alter materialized view olaptrain.cb$sales_cube enable query rewrite;
alter materialized view OLAPTRAIN.cb$sales_cube disable query rewrite;
No idea why is this Query Rewrite feature is not working on my Database instance of 11g R2 . Do am I missing any steps that has be taken care of , to make this working. Any inputs would be appreciated.
Thanks
S

Hi there,
You should check out Note 577293.1 on Metalink - 'Oracle OLAP 11g: How to ensure use of Cube Materialized Views/Query Rewrite'
Thanks,
Stuart Bunby
OLAP Blog: http://oracleOLAP.blogspot.com
OLAP Wiki: http://wiki.oracle.com/page/Oracle+OLAP+Option
OLAP on OTN: http://www.oracle.com/technology/products/bi/olap/index.html
DW on OTN : http://www.oracle.com/technology/products/bi/db/11g/index.html

OLAP cubes from heterogeneous data sources using XML DB

hi.
Q:1
How we can create an OLAP cube (XML cubes) from XML data sources if using XML DB.
Q:2
How we can create an OLAP cubes from warehouses and flat files and covert these cubes into XML cubes.
Q:3
Is there any other tool (Except Analytical workspace manager AWM) which supports the construction of OLAP cubes in XML format from heterogeneous data sources?
Edited by: user11236392 on Aug 21, 2009 3:50 AM

Hi Stuart!
Your undersatnding is partially correct. i am working for providing an architecture for XOLAP, XML is one of my data source.
The idea is to generate uniform cubes from heterogeneous sources that can be integrated into a global cube. instead of building Oracle OLAP cubes from all the sources (this work is already done) i want to generate an XCube from XML data sources using XQuery.
On the other hand if we have generated the Oracle OLAP cube from other sources like warehouses or flat files. i have to convert these Oracle OLAP cube into XML cube for uniformity. in an research paper i find that there is an operator Xcube embedded in XQuery which converts the multidimensional data (cube) into XML cube. im looking for the implementation of this operator in Query that how this operator works.
hope u understand my architecture. but if u still have some confusion, kindly give me ur mail id. i will mail the diagram of my architecture.
thanks.
saqib

Largest Oracle OLAP cube

Forum members,
What is the largest Oracle OLAP cube that is out there in terms of total size, number of dimensions, and metrics? The company I recently joined uses Microsoft SSAS for building cubes pulling data from an Oracle DB. The size of the Microsoft SSAS cube is 18 TB (Tera Bites). I am encouraging these people to use Oracle OLAP, but there is push back saying Oracle OLAP won't scale to the extent Microsoft SSAS has.
I need some real data to defend my case. Has any one moved from Microsoft SSAS to Oracle OLAP?
Thanks,
Logan

Logan,
In addition to the link that David provided, some more points are:
(1). With cube compression, it could be that the same 18 TB cube in MSAS is smaller in OLAP. Its hard to prove it without doing a test load.
(2). Microsoft does have a very feature-rich front-end to develop/build dimensions and cubes for MSAS, compared to Oracle OLAP's AWM.
Most of the work is handled in relational sql-views before loading dimensions and cubes in Oracle-OLAP. That is why there is relatively less functionality in AWM.
(3). Another thing I heard about in MSAS is "Scoped Assignments". I am not sure what it is, so I can't say how it can be done in Oracle-OLAP. If your customer currently use this MSAS feature, then you can post a question on this forum providing some details.
(4). MSAS does provide good Excel reporting. If your client will continue using Excel, then you should look at Simba's Oracle OLAP MDX plugin for Excel. Search this forum and you will find information about it, or goto http://www.simba.com/MDX-Provider-for-Oracle-OLAP.htm
(5). Writeback is another feature that can be done easily in MSAS. With Oracle-OLAP, you will have to come up with a custom (although simple) solution, where the data will be written into a table first and then loaded into Oracle-OLAP cubes. Its a very very quick process.
(6). There are more choices for reporting tools compared to MSAS. Since Oracle-OLAP cubes are queried through SQL SELECT statements, as long as a reporting tool can generate SELECT statements for an Oracle database, it can also work with Oracle-OLAP.
(7). Finally, it is much easier to federate (or combine) relational and multi-dimensional data together between Oracle-OLAP and Relational, as both are in the same database. So you may not have to store all the data into OLAP cube, what is currently loaded into MSAS cube.
Overall, its a slightly different way of doing things between OLAP and MSAS. But I am almost certain that with the power and scalability of Oracle database, Oracle-OLAP will perform better than MSAS. You just have to know how to convert those MSAS cubes/dimensions into OLAP cubes/dimensions.
.

How to refresh OLAP Cubes in AWM?

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