SSRS reports with Oracle Database Datasource

Other SQL Server Topics
1

I was asked to write SSRS Report that connects to Oracle Database and I have not done it before.
what are the options for the people who connected before?
we have vendor oracle Database and we want to write report using SSRS

thanks in advance.
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2

Can you check this

http://www.codeproject.com/Articles/857489/Creating-Report-using-Report-Builder-and-Oracle-DB