Cannot Fetch data from database

Hello All

This has been my biggest deadlock these days.

I am Using BIRT to fetch data from a DB2 databse and create report.

I am following the process as
1. create a blank BIRT Project
2. Add Report
3. Create a Datasource for the report by providing Driver information, driver url, user and password.
4. create a dataset and fetch the table data as a query

Now all the above steps are success. The only problem is that the datasource which is connecting to the database is not picking all the tables.

I have gone thru hell lot of blogs but getting the solution.

Can anybody guide me really fast.

i will be ever grateful
Thanks a lot