Reg:fragmentation in OBIEE

Hi All,
I query, we are trying to use Aggregate tables in our design by Materialized views as option. When we want to use these MVs should these MVs not contain any operators like MINUS, UNION ALL etc?
Does OBIEE support fragmentation??
Any pointers would be of great help.
Thanks in advance.
\Cheers

Hi
thank you for the quick reply.
I will rephrase my question here
If I go for aggregate table and Materialized Views as option which contains. UNION,MINUS operators.
Does OBIEE support Aggregates and Fragmentation on same table source?
\Cheers

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Aggregate navigate or Fragmentation in OBIEE

Whats the better approach aggregate navigate or Fragmentation in OBIEE BMM layer and how ? What are the pros and cons of each one of them

I still cannot understand the original question: "aggregate navigate or Fragmentation.."
Searching the documentation I can find:
Setting Up Fragmentation Content for Aggregate Navigation
When a logical table source does not contain the entire set of data at a given level, you need to specify the portion, or fragment, of the set that it does contain. You describe the content in terms of logical columns in the Fragmentation content box in the Content tab of the Logical Table Source dialog.
and
Setting Up Aggregate Navigation by Creating Sources for Aggregated Fact Data
Aggregate tables store precomputed results from measures that have been aggregated over a set of dimensional attributes. Each aggregate.....

Fragmentation in OBIEE

Version = OBIEE 10.1.3.3
I need some help getting fragmentation to work correctly.
I have two tables SALES and SALES_HIST.
SALES has all date after 2/1/1998
SALES_HIST has all data before 2/1/1998
I have created a logical table "SALES" in the BMM and set the sources to SALES and SALES_HIST. In the fragmentation field on the content tab, this is what I have entered -
For SALES = "Sales History (SH)".Times."Time ID" >= '01/01/1998' AND "Sales History (SH)".Times."Time ID" <= '01/31/1998'
For SALES_HIST = "Sales History (SH)".Times."Time ID" > '01/31/1998' AND "Sales History (SH)".Times."Time ID" < '12/31/2008'
When I query for data in Answers without any filter, Answers returns all data from SALES and SALES_HIST. That is great because thats what I expect OBIEE to do. When I look in the NQuery.log, I see a UNION ALL between SALES and SALES_HIST which is what I expected.
However, when I add a filter a filter for example -
TIME_ID >= '01/20/1998' AND TIME_ID <= '2/25/1998'
and run the query it returns data only upto 1/31/2008. When I look at NQuery.log, I only see a query against SALES_HIST table.
The SALES table is not being queried at all. I would appreciate it if someone can give me some pointers about what could be wrong.
Thanks

Suppose you have 1 million rows fact table, but 20% are requested 80% of time, by 80% of users.
For example : these 20% represents the current and previous year facts (interesting data for analyst), and the 80% left are old data.
You don't want to "read" these 1 million rows each time a report wants to display the 20%.
So, in your ETL, you split the data into 2 tables (or more). The first one (we'll call it Fact_main) has the 20% data, and the second one (Fact_old) the 80% old data.
Now, in OBIEE :
- in the physical layer : you insert all the tables. Each of the 2 fact table are linked to the correct dimensions.
- n the logical layer : only 1 logical fact table with 2 sources.
BUT, OBIEE has to choose the right source depending on the request. And, sometimes, OBIEE has to do use the 2 sources at the same time (if you want to request data for the 3 or more last years, for example).
So, in the logical source definition, in "content" page, you'll define the "fragmentation" option by putting : "dim_time.year in (2010, 2009)" (or use variable like current year) in one, and dim_time.year <= (2008) in the second one. Then, active the option : "this source will be combined...".
In Answers :
- if you do a report with a filter "year > 2009", only the first source will be used
- if you do a report with a filter "year <= 2008", only the second source will be used
- if you do a report without any filter on the year, the 2 sources will be used (thanks to a Union)
Another case : an international company has a big fact table and a big customer table, with fact and clients from all the world. But you know that in 80% of case, end-users analysts will be focus on 1 country based on their organization. So you will fragmente data : 1 table for France, 1 table for USA, 1 table for Spain etc. Or, 1 table for Europe, 1 for North America, and so on... But only 1 logical table in your logical layer.

Reg approach in OBIEE

Dear all,
I am new to OBIEE. My requirement is to retrieve scheduling information stored in a database which would include the recepients to whom the report has to be mailed and the filtering criteria for the report data and based on this we would query another database to retrieve the actual report and send it via smtp to the intended recepients.Can some one give me some insight about the best suitable approach to achieve it.
Thanks in Advance.

Dear all,
I am new to OBIEE. My requirement is to retrieve scheduling information stored in a database which would include the recepients to whom the report has to be mailed and the filtering criteria for the report data and based on this we would query another database to retrieve the actual report and send it via smtp to the intended recepients.Can some one give me some insight about the best suitable approach to achieve it.
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thanks

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Hi
I have two dim tables
Dim A and DIm B connected to Fact table joins are there in BMM layer and physical
when i create the repor in query from columns of the both dims the joins are not formed in session query...result it is doing a cartesian product and reportin is runninig for longer time
Where could be the issue?
Thanks!
Edited by: user511637 on Dec 15, 2009 4:28 AM

Hi user511637,
I got a follow up for the first question:
-- Are all three tables (Dim A, Dim B and Fact) in the same physical database?
YesSo all the tables are on the same physical (Oracle?) database. How are they setup in your RPD? Are they also setup in the same physical database object in the RPD? If not, that will cause them to execute separately.
Have you tried to drop all the joins and re-create them like you read in the other post?
If you have all of these setup appropriately and you're still getting join issues, here's what I recommend.
1) Pick a schema to be the master schema
2) Create synonyms for all tables that are not in the same schema and make sure that schema user has select on the tables. Since all your tables are on the same DB, this can be done.
3) Import the synonym objects into a single RPD database/schema.
4) Setup the joins the way they should be
5) Retest
-Joe

OBIEE Fragmentation using Essbase as data sources

Hi-
How can we create a fragmentation on OBIEE taking data sources from 2 cubes? For example:
I have 3 dimensions (same outline on both cubes):
Account:
- Account 1
- Account 2
Product:
- Product 1
- Product 2
Year:
- Y2008
- Y2009
And how can we set the fragmentation, if we want to take Y2008 data from cube 1, and Y2009 data from cube 2?
I've tried to set:
on BMM:
Account:
-source:
--cube1
aggregation content, group by: Logical level
fragmentation content: cube1."year"."Gen2,year" = 'Y2008'
--cube2
aggregation content, group by: Logical level
fragmentation content: cube1."year"."Gen2,year" = 'Y2009'
Year:
-source:
--cube1
aggregation content, group by: Logical level
Mapped Year to Gen2,year
fragmentation content: cube1."year"."Gen2,year" = 'Y2008'
--cube2
aggregation content, group by: Logical level
Mapped Year to Gen2,year
fragmentation content: cube1."year"."Gen2,year" = 'Y2009'
It still only taking the data from cube 1.
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State: HY000. Code: 10058. [NQODBC] [SQL_STATE: HY000] [nQSError: 10058] A general error has occurred. [nQSError: 42043] An external aggregate is found in an outer query block. (HY000)
Please advise,
Kind regards

Hello,
I'm having the same problem as you.
Have you found a solution?
Can you share
Thank you

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Hi All,
I need some clarifiration on Fragmentation content on OBIEE RPD side, for what purpose we can use these fragmentation in OBIEE.

Hi Deva,
Thanks for You are Quick Response...
Actually in my project we have total 9 tables are there in these 9 tables 3 were FACT tables remaining are the Dimensional Tables.
For each day we are getting around 7 to 8 lacks data into our DB.
When ever client to see or to pull one month data its taking around 9 to 10 mins , but for pulling one day or one week its taking less then 20 sec only .
So for improving response time what are the steps i need to follow, could you please guide me.
For each Fact and each Dimensional tables i'm using single logical source only and am not using multiple logical sources .In each fact table for 10 or 15 colums am using sum function only, at max am doing sum claculations for 20 columns in both fact tables..
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Aggregation and Fragmentation

Hi Gurus,
what is meant by aggregation and fragmentation in OBIEE .Do we use these only when we want to improve the performance of the report if no in which type of scenarios when will go for these.Please any one help me with exact scenario.
Regards,
Rafi

Hi,
As per the below link
http://108obiee.blogspot.com/2009/01/fragmentation-in-obiee.html
In fragmentation after fragmenting the table in database and reimporting the tables and making the joins in Physical layer. we have to drag the table in BMM layer .
When we generating the report on channels table with channel id greater than 5 then how the biserver will go to the particular table(i.e.Channels_Other). How the biserver will follow the link between two tables(i.e. CHENNELS and CHENNELS_OTHERS) when fetching the data in the report.
In logical table source why we have to enable the option This source should be combined with other source at this level if we won’t enable this option what it will happens.
Thanks,
Edited by: Rafi.B on Aug 2, 2012 1:06 AM

Best ways to create rpd or reports if we have data in more fact tables

I have fact and dimensional data in one or more different tables. Then each logical table source represents one data segment.Please suggest me some methods or ways like fragmentation through which i can use them in creating rpd and report and main problem here is facts too large contains 25 million records.But adding tables in BMM layer effecting performance so can anyone other ways doing it in database side.
Thanks in advance
Edited by: user2989722 on Dec 3, 2009 3:09 PM

hi,
For the fragmentation you can create on dimension .The procedure is clearly explained in this blog
http://108obiee.blogspot.com/2009/01/fragmentation-in-obiee.html
http://www.rittmanmead.com/2007/06/19/obiee-data-modeling-tips-2-fragmentation/
For the performance point of view you can create a Materialized view (based on columns that your report is using) so that it will hit that particluar view instead of hitting whole table(25million records table) please look into this post
Re: Materialized views in OBIEE
thanks,
saichand.v

How to do Fragmentatiom of Two Essbase cubes.

Hi
How can we create a fragmentation on OBIEE taking data sources from 2 cubes? For example:
I have two cubes basreg(current year) and basreg09(history) .Their is a minor change in cube structure for that reason they created a new cube for year 2010.
I need to pull both cubes data inorder to show report result. Is their any method or way through which i can use both cubes in obiee in creating report.
Regards
Sandeep Artham

Hi Everyone
Please respond to this request. Help me out how to solve this issue.
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Sandeep

COMPLEX PARTITIONING between an EXCEL and a DATABASE (Datasource)

I want to make a complex partitioning between an excel and a Database.
*In the Excel File :
- I have the Data summarized at Month Level,
-Time sales is between 1993 UNTIL 1996.
*In the Database:
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-Time sales is between 1993 until NOW.
In the BMM:
-In my Database's SALES LOGICAL TABLE SOURCE Content:
I put in WHERE SECTION :
" CAST ( EXTRACT( YEAR FROM TRANSACCIONAL."".OLTP.ORDER_HEADER.ORDERED_DATE) AS INTEGER ) > 1996"
To constraint the data from 1996 until NOW.
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To SALES LOGICAL TABLE SOURCE EXCEL FILE: MONTH DAY LEVEL
To SALES LOGICAL TABLE SOURCE DB : DAY LEVEL
I want to make a COMPLEX PARTITIONING(Value-Based and Level-Based).
When I try to make the query:
State: HY000. Code: 10058. [NQODBC] [SQL_STATE: HY000] [nQSError: 10058] A general error has occurred. [nQSError: 14023] None of the fact sources for Times.Calendar_year_cal_year_code are compatible with the detail filter []. (HY000)
SQL Issued: SELECT Times.Calendar_year_cal_year_code saw_0, Sales.Amount_sold saw_1 FROM "Sales BI DataMart" ORDER BY saw_0
Can any1 help me?
Thanks in advance..

Hi,
Actually value based partitioning works fine on the data sources which are stored on RDBMS. I haven't try it with a excel source. There is a detailed description in the link below.
http://108obiee.blogspot.com/2009/01/fragmentation-in-obiee.html
Hope this helps,
Cheers.
Cuneyt

Oracle Data Warehouse DB and OLAP_OBIEE DB [OBIEE11g]

Hi Experts,
I have a problem regarding joining the 2 DB in an Analysis report.
The scenario is this:
Oracle Data Warehouse is DB_1 and OLAP_OBIEE is DB_2
DB_1
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DB_2
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In Analysis report when they are queried or run separately, obviously there will be a report generated.
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Please help how do I fix this issue :(
Thanks,

Hi,
check the following links:
http://www.rittmanmead.com/2007/10/reporting-against-multiple-datasources-in-obiee/
http://108obiee.blogspot.com/2009/01/fragmentation-in-obiee.html
http://gerardnico.com/wiki/dat/obiee/multiple_subject_area

Data from three instances

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1. Physical layer, i created three connection pools and dragged the views (they are all named sample_view) in. I am trying to do a join, but by default i am only able to do 1 to N relationship only. I went ahead created it.
2. BMM layer, i created a new LTS to pull the views from other connection pools. But i dont want to do a join, which will pop up an error/warning if i dont.
This may not be the best way, but i was giving it a try in OBIEE before i ask my DBA to create a view with all data from all three instances in the same one. Please advise if anyone has experienced this situation before.
Thx!

Why don't you use fragmentation?
http://108obiee.blogspot.com/2009/01/fragmentation-in-obiee.html
If you need similar to UNION why do you need join?
Explain a little bit more please..
Regards
Nicolae

VALUE BASED PARTITIONING BETWEEN AN EXCEL AND DATABASE

Can any1 help I have an EXCEL FILES and DATABASE. I want to make partitioning value-based between these sources.
Thanks you in advances.

Hi,
Actually value based partitioning works fine on the data sources which are stored on RDBMS. I haven't try it with a excel source. There is a detailed description in the link below.
http://108obiee.blogspot.com/2009/01/fragmentation-in-obiee.html
Hope this helps,
Cheers.
Cuneyt

Reg:fragmentation in OBIEE

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