Error vendor code 942 when connecting with different user

Hello,

I'm using CR2013 with SP1 and Oracle 11r2.

I created a report to be used in several applications. Each application access the database with a different username.

Each username (userapp1, userapp2...) was created by a DBA user giving grants to access to all tables needed to run the report.

What is happening is when I run the report through the application using DBAuser credencials everything runs smoothly.

But when I try to run the report using the "userapp" credentials I get the error vendor code 942.

In the Crystal Reports I can use any credentials (DBAuser ou userapp) that works fine, but through the application I always get this error.

Anyone can help?

Thanks in advance

Luis