oracle BI database security benefits

We have an oracle EBS (financials) database and the data is copied to the BI database for reporting. From a security angle, we did some checks for weak and default passwords in the EBS, and the exact same issues were found in the BI database, For anyone familiar with BI, does it just copy the entire database including user accounts and passwords. And if so is there any value locking down the passwords in the BI database, if they will be just overwritten constantly by the EBS data when it is reimported?
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pma111Asked:
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MikeOM_DBACommented:
The BI database passwords as well as the security provisions are (should be) independent of the source database and therefore also maintained independently -- that is unless you have a non-standard environment.

BI is not just a copy of the source database but rather equivalent to a data-mart (or a subset of a data-warehouse) where the data is rather constantly added to it.

If in your scenario the BI database is being entirely replaced every period, you may have a grave issue.

Talk to the architects who installed/created the database.
Good luck!
:p
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pma111Author Commented:
>you may have a grave issue

can you elaborate?

thanks for the feedback
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MikeOM_DBACommented:
BI database is (or should be a datamart/data warehouse)  that supports OLAP (OnLine Analytical Processing) and is used for reporting and analyzing data.
Typically it has a special architecture (schemas) which data is fed from the transactional database.
Therefore just duplicating the source database would not fulfill the requirements of BI -- which is the issue here.
What I am stating is purely a generic overview.
PS: Typically there is a second layer of security provided by the software used to exploit the BI database.
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