If you are interested in doing ETL with Oracle eBusiness Suite (EBS) using
Oracle Warehouse Builder (OWB), please read on.

Setting up metadata extraction user
===================================
OWB employs a design-deploy-execute model as an ETL solution.  As such, you
need to import metadata from Oracle eBusiness Suite first before you can create 
mappings to perform ETL.  

In EBS, the APPS schema holds key metadata of its tables, views and sequences.
However, in a production environment, it is assumed that you seldom get access
to the APPS schema.  Therefore, you need to set up a metadata extraction user so
that OWB can extract metatdata out instead of from the APPS schema directly.

Here is how you do it:
#1 Ask your DBA to create a user on the database hosting EBS.  This user will need
   at least CONNECT and RESOURCE roles.
#2 Ask your DBA to run the accompanying script (owbebs.sql).  This script performs
   the following:
   (a) Grant SELECT access to FND_APPLICATION, FND_APPLICATION_VL, FND_TABLES,
       FND_VIEWS, FND_SEQUENCES, FND_COLUMNS, FND_PRIMARY_KEYS, FND_FOREIGN_KEYS,
       FND_PRIMARY_KEY_COLUMNS, FND_FOREIGN_KEY_COLUMNS.  These tables are owned
       by the APPS schema and contain metadata of tables, views, sequences and
       keys in EBS.
   (b) In the metadata extraction user's schema, create a synonym for each of
       the above objects.

Setting up data extraction user
===============================
The user you created in the last section only gets you the metadata.  In the
end, you want to extract data out by creating mappings in OWB to perform the
necessary ETL.  As a result, you need a user on the EBS database where you
could extract data.

You could use the same user that you created for metadata extraction purpose, 
or you could use a different user.

You will need to provide your DBA with a list of objects that you need access
in the EBS database.  You DBA will then need to grant this data extraction user
at least SELECT access to each object on your list.

Using OWB to do ETL with Oracle eBusiness Suite
===============================================
#1 You first create an Oracle location to do metadata extraction from your EBS 
   database.  The user name should be the name of the metadata extraction user.
#2 If your data extraction user is different from the metadata extraction user,
   you need to create a second location for that purpose.
#3 Create a module under the "Oracle eBusiness Suite" node, assigning the
   location for metadata extraction purpose to the module.
#4 If you have a data extraction location, you need to edit the module and go
   to the "Data Location" tab, add the data extraction location to the list of
   locations, and choose it as the default.
#5 You then configure the module by doing right-click "Configure" in the 
   console tree, and make sure that the "Location" property is set to the
   data extraction location.
#6 Please note that steps 4 & 5 are only needed if you extract metadata and
   data throught 2 different users.
#7 Import the metadata into the module via the Import wizard.
#8 Design your ETL process with mapping and process flow editor.
#9 Deploy and execute your mappings and process flows.