Cannot access columns in a result set using table alias in Oracle database

I have a query which joins a few tables. There are a few columns in various tables with identical names. In the query, I have assigned table aliases for each table thinking it'll be the manner in which I access a specific column in a specific database table. However, when trying to retrieve the column, I'm getting an exception stating "Invalid column name". I had no problem doing so in my last project when I was coding against MySQL database so this is likely to be a driver implementation issue. My current workaround is to assign a column alias though I find this to be annoying and it does make the query very verbose.
My question is whether this option is perhaps a configuration issue, a bug, or something that I'm missing. Also, I would like to know if anybody has an elegant workaround without accessing columns using their numeric index.
I'm querying an Oracle 10i database in a managed environment (database connection is obtained from a Weblogic data source).
Sample query:
select
a.address1,
d.address1
from
account a
inner join
department d on a.department_id = d.department_id
where
a.account_id = 1000;
When trying to access a ResultSet instance in the following manner, I will get an exception:
rs.getString("d.address1");
Retrieving "address1" will return the first column in the select clause.

jonathan3 wrote:
My question is whether this option is perhaps a configuration issue, a bug, or something that I'm missing. Since you already figured out that you can use an alias one can suppose that it is the last in that you are missing that you already have a solution.
You can try extracting the meta data to see if it has a name without the alias. Probably not.
Also, I would like to know if anybody has an elegant workaround without accessing columns using their numeric index.One can only suppose that you consider using names "elegant".

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