Star Schema Using OWB 10g

Hello,
I would like to know whether is it possible to build a star schema using Oracle OWB 10g?
If so how could I do build one? Any help is highly appreciable.
Regards

Hi ,
You can use Oracle SQL Developer Data Modeler .
SQL Developer Data Modeler provides a full spectrum of data and database modeling tools and utilities, including modeling for Entity Relationship Diagrams (ERD), Relational (database design), Data Type and Multi-dimensional modeling, full forward and reverse engineering and DDL code generation. The Data Modeler imports from and exports to a variety of sources and targets, provides a variety of formatting options and validates the models through a predefined set of design rules.
Oracle SQL Developer Data Modeler can connect to any supported Oracle Database and is platform independent
http://www.oracle.com/technology/products/database/datamodeler/index.html
Thanks,
Sutirtha

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Relational Star Schema with oWB 10g

Hi,
It is an interesting forum. I like to explore the different approached to build ETL using OWB to load Star Schema built around Oracle 10g relational structures.
How do we take advantage of additional features of Oracle DB 10g and OWB 10gR2?
What features does help? Which one should stay away from?
Thanks in advance.
Ram

Hi ,
You can use Oracle SQL Developer Data Modeler .
SQL Developer Data Modeler provides a full spectrum of data and database modeling tools and utilities, including modeling for Entity Relationship Diagrams (ERD), Relational (database design), Data Type and Multi-dimensional modeling, full forward and reverse engineering and DDL code generation. The Data Modeler imports from and exports to a variety of sources and targets, provides a variety of formatting options and validates the models through a predefined set of design rules.
Oracle SQL Developer Data Modeler can connect to any supported Oracle Database and is platform independent
http://www.oracle.com/technology/products/database/datamodeler/index.html
Thanks,
Sutirtha

Error with creating star schema using HsvStarSchemaACM

Hi,
I am trying to create a star schema using the API HsvStarSchemaACM. But when calling the create function of API, i get the below exception. Exception from HRESULT: 0x80040251 (A general error occurred while trying to obtain a database Reader/Writer lock). Is this something to do with the parameters passed and its connections(connection works fine and createstarschema is running thru workspace).
Any solutions to this is more welcome.
Thanks,
Logu

Can you provide details on HsvStarSchemaACM API? How is it related to ODI?

Help In XML schema using oracle 10g

i want to give seminar in XML schema using oracle 10g. n i m very new in this topic. so help me out which topic i include & any document regarding this

XML Schema has various aspects.
1. Creating an XML Schema, which may be done in JDeveloper.
2. Initializing an XML document from an XML Schema, which may also be done in JDeveloper.
For creating and initializing an XML Schema please refer
http://www.regdeveloper.co.uk/2007/10/01/build_xml_schema_jdeveloper/
3. Validating an XML document with an XML Schema.
http://www.oracle.com/technology/pub/articles/vohra_xmlschema.html

How to join 2 star schemas using a Dimensional table( like Bridge Table)

How to join 2 star schemas using a Dimensional table( like Bridge Table) in OBIEE?

Complex joins and Content levels is all you need, have you tried the forum search?

Comparing schema using OEM 10g

Hi,
IS there any way to compare schema from 2 different schema for Prod and test environments using OEM 10g.
I have a comparison script which will work for mr but the report generated is not easily readeble.
Please point out the steps if there is any option to do so in OEM 10g. My database version is 9i.
Thanks
Anky

You can use Oracle Enterprise Manager Grid Control or SQL Developer, in either case you need to have the change management pack licensed other then that you are looking at 3rd party tools such as Toad, older version of OEM or custom scripts.
You can try some of these tools which include scripts, etc. as these may also be of help to you.
http://dgielis.blogspot.com/2006/01/compare-2-oracle-schemas.html
Mike M.

Why is EA Star Schema used ?

Hello,
I have a simple question on why the Star Schema is used ? Getting an answer from Wiki is not what I wanted , some response from the Gurus would be great to hear. Every time when there is a Metadata Update in HFM during Monthly Change and Maintenance a New Star Schema should be created and only then I run the Dimension Update Job in Essbase, what is the real reason for that. If you say that it Updates the New Dimension changes in HFM to Essbase , then for that we already have an EAL taking care of Updating the Essbase Metadata in Tandem with HFM.
Any comments.
Thanks !!

I was on a Extended Analytics project in 2008. There was no EAL. EA was it.
Regards,
Cameron Lackpour
P.S. Thankfully, I can't remember the functionality other than it was like being cooked, slowly, over a roaring fire.
Edited by: CL on Jan 9, 2013 3:42 PM

To run a mapping using owb 10g expert

Hi All,
My requirement is to run the mapping in OWB using an expert.I created an expert using OWB and associated the mapping with the expert using Add/Remove expert option.I validated and generated the expert.But when i run the expert through start option in design center then my target table in the mapping does not get loaded.This shows that i am unable to associate my expert with mapping.
In expert editor, i linked start_task with custom_dialog_task which is again linked with the end_task.It seems i am missing some steps.Please let me know what all steps need to be followed in expert editor interface to run the mapping.Response is awaited.
Thanks

You're better off asking that question in the [OWB forum|http://forums.oracle.com/forums/forum.jspa?forumID=57].

OWB 10g/11g version control

I am using OWB 10g release 2 but there is no feature for version control. The snapshot feature and export/import can help but Its very difficult with big project.
Is there any new feature with OWB 11g release 1 or 2 for version control ? Do you have any proposition for version control in 10g ?
Robin
Edited by: user451399 on 2009-06-12 08:07

Hi Robin,
In the repository there can be only one version at the moment. If you have to work on an older release, you have to load it into another repository.
We proceed as follows:
1. Build a collection containing all objects that belong to the release
2. Export that collection
3. Check the file into CVS
4. Import the file into production repository (in production db)
5. Deploy from the production repository to the production target schema
That way the release that is currently deployed on production is also in the production repository. You may do hotfixes directly here or just have a look at what is currently deployed.
In our development repository we can work on new features.
I gave a talk about automating this process on DOAG 2008. You may request the presentation here [http://www.metafinanz.de/leistungen/leistungsbereiche/bi-reporting/data-warehousing/kontaktformular/|http://www.metafinanz.de/leistungen/leistungsbereiche/bi-reporting/data-warehousing/kontaktformular/]
Though the slides are in german they show the architecture and should give you some idea.
Regards,
Carsten.

OWB 10G R2 with 9.2 DB....

At my company the standard for databases is still 9.2. Since this is a large organization, we are a little slow to adopt the latest versions (we are still running OWB 9.2.0.8).
According to the FAQ, Design repositories for OWB 10g R2 can be setup on a 9.2 DB.
http://www.oracle.com/technology/products/warehouse/htdocs/owb_10gr2_faq.html#37
In the FAQ, it also says to look at the Certify page in Metalink to see what databases are supported by OWB 10g R2:
http://www.oracle.com/technology/products/warehouse/htdocs/owb_10gr2_faq.html#35
In the Certify page, only 10g R2 DB appears to be certified for OWB 10g R2.
Is anyone running OWB 10g R2 with 9.2 DB (for both Design and Runtime environments)? Any problems with this setup?
Since OWB 10g R2 is a new release, could it be certified for 9.2 DB later?
Since it is not certified for 9.2 DB, will Oracle give support if we run into problems?
I thought one of the major advantages of OWB was suppose to be compatibility between database versions. I was surprised not to see that 9.2 was not certified.

Hi,
You can have OWB 10G R2 on Oracle 9.2.
We are using OWB 10G R2 on Oracle 9.2.
I have done instalation on both Windows and Unix environment.
What you need is patch 9.2.0.6.0
Regards
Amit
9820579749

OWB 10g R1 : Installation required in Production Environment?

Hi All,
We are using OWB 10g Release 1.
We are planning to create a production environment, where we will only deploy the code generated by OWB. But, the mappings(packages) that are generated using OWB , use some audit tables. So , we are wondering if we have to install OWB in production environment also.
Anybody who is having idea abt this , please reply
Thanks in Advance

No; you CAN have only one design repository and in this, as many runtime connections as you would like: (development, test, education,pre-production, production etc). This might go against good application development practice, but it is possible, and can be perfectly ok in smaller warehouse projects with few developers. And thenyou don't have to go through the hazzle of moving metadata between repositories, in the correct order. One advice though: Have different passwords for the runtime connections, so you don't connect to the wrong runtime environment by mistake ;-)
best regards
Henrik Verup

ODBC Connectivity in OWB 10g

Hi,
I have one of my data source as AS400. I have setup a DSN to connect to this data source. I want to know how I can connect using OWB 10g to the AS400 data source using this DSN.
Is there any other way that I could connect to the AS400 data source using OWB 10g without using any additional drivers which involve a cost :-) ?
Thanks for your help in advance.
Thanks & Regards,
Harshad Borgaonkar

Hi Harshad,
You can do this with the heterogeneous services.
http://www.datadirect.com/developer/odbc/oracle_heterogeneous/index.ssp
has a good description of what to do.
You'll have to setup the heterogeneous service on an Oracle database on the same platform for which you have ODBC drivers for, presumably Windows.
You should then be able to connect to this database in OWB and create a connection under Databases -> Other -> ODBC or Other.
Cheers,
Colin

OWB 10g: how control files are generated?

We are using OWB 10g within a 10g Database. We want to know how control files are generated by OWB in the file system. The reason we need to know is because our DBAs do not want to create directory objects pointing to NAS devices, their policy states that all directory objects should be on SAN shares. We rather use NAS shares since it simplifies our batch (too long to explain here). OWB has the "CREATE ANY DIRECTORY" privilege granted. Is it using this privilege to create a directory object for the path we specify the control file in the mapping or is it writing directly to this path? We checked the directory objects created (SELECT * FROM DBA_DIRECTORIES) after deploying a control file and it didn't seem to have created any new ones. Anyone knows how OWB creates these control files?

Yes, indeed that's what we were after. We basically wanted to be sure we are not breaking an internal policy that says that "Oracle directory objects can not be located on NAS shares". The reasoning behind this policy is that NAS shares are not deemed highly available or high I/O devices hence our Oracle DBAs will not allow us to create any Oracle directory objects in NAS shares. The policy states that all database data should be stored in SAN shares which are directly attached to the servers and are therefore high I/O devices. It is arguable if the OWB data we want to load is really part of a database, we believe it is not. There are other implications in our environment about using NAS instead of SAN (NAS can run in active-active mode across different data centres, whereas SAN requires replication since it doesn't usually work well in an active-active mode across different data centres). So based on your answer we should be fine since OWB reads and writes directly to the files without using Oracle Directory Objects which supports our theory that these are not DB specific files and are only "OWB App" files which can then sit on a NAS without breaking the above stated policy.

Owb 10g R2

I’m new to owb and I’m using owb 10g R2. I need to create a map to return a set of values based on the latest process’s date.
The map reads data from a view source and then using sorter operation to sort data by ORDER_NUMBER, DATE_PROCESS, ORDER_STATUS asc
ORDER_NUMBER     DATE_PROCESS     ORDER_STATUS
A00378091          06/23/2011               1
A00378091          06/25/2011               3
A00378091          07/15/2011               5
A00447816          05/17/2011               3
A00447816          05/20/2011               5
A00447816          06/25/2011               4
I use the aggregator group by order_number to get the max(date_process) but I don’t know how to get a value of order_status.
How do I crate a map to return the value as
A00378091          07/15/2011               5
A00447816          06/25/2011               4
I very appreciate your help, thanks.

Thanks Igor. I still don’t know how to do it. I’m sorry that I’m not clear that the set of data are not in a table yet.
The following is a list of steps in the map.
1. Read data from view (~ 900,000 rows)
2. Sort data using sorter operation.
Sorter operation ORDER_NUMBER, DATE_PROCESS, ORDER_STATUS asc (data are not in a table)
A00378091      06/23/2011      1
A00378091      06/25/2011      3
A00378091      07/15/2011      5
A00447816      05/17/2011      3
A00447816      05/20/2011      5
A00447816      06/25/2011      4
3. Aggregator group by order_number to get the max(date_process). I don’t know what expression on mrp_order_status to get the latest value based on max(date_process). I can’t use min/max(order_status) because it gave me a wrong order_status’s value
4. table (loading type Update/Insert)
order_number is a key on a table and I need to get the latest data of date_process and order_status from the sorter (or aggregator) to update/insert into a table. So the data in a table will contain
A00378091      07/15/2011      5
A00447816      06/25/2011      4
I never use table operator, I try to find the site so I can learn more about it. Would you please explain step by step? I very appreciate your help.

Understanding Star Schema Operations

Hi All,
I worked on Oracle Answers and have knowledge on Data Warehousing concepts. I have enough oracle documentation on OLAP, OBIEE, Data Warehousing.
But i 'm not able to understand the star schema concepts in and out. I'm lost on all documents, where i'm getting the simple answer on the following topics:
1. Is it necessary to create dimensions using CREATE DIMENTION or it can be a simple relational table structure with CREATE TABLE statement?
2. What will be the steps to create a very basic/simple star schema using DML statements not using any tool?
3. Where I can get very basic level step by step tutorial to create a very simple star schema by sql -> loading test data by sql commands -> then what queries we can use to get BI reports or using OBIEE to create a simple rpd.
Please give me some idea on this as I have to create a small OBIEE repository where i have to do create the warehouse and ETL process, everything.
Pls advise.
Thanks in Advance.
Sudipta

No my question was on creating the star schema. If i have to create a very simple star schema then can I create the star schema with the following relational tables?
create table dim_products (
product_id number primary key,
product_name varchar2(32),
brand varchar2(32),
category_name varchar(32),
sub_category_name varchar2(32)
create table dim_time (
time_id number primary key,
selling_date date,
selling_day number(2),
selling_month varchar2(12),
selling_Quarter varchar2(6),
year number(4)
create table dim_region (
region_id number primary key,
store_name varchar2(32),
city_name varchar2(32),
state_name varchar2(32),
country_name varchar2(32),
region_name varchar2(32)
create table fact_sales (
sale_id number primary key,
region_id number ,
time_id number ,
product_id number ,
unit_sold number,
constraint fact_sales1 foreign key (region_id) references dim_region (region_id),
constraint fact_sales2 foreign key (time_id) references dim_time (time_id),
constraint fact_sales3 foreign key (product_id) references dim_products (product_id)
Or I have to create the DIMENSIONS explicitly, in order to building the hierarchy levels?
Regards
Sudipta

Star Schema Using OWB 10g

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