Question : ssrs 2008r2 - Oracle 64bit access problem from Report builder 3.0

Hi,

I have provided environment details as below. I have created shared oracle datasource using TNS. and tested connection successfully using SQLPlus. But when I try to access oracle datasource to create new report from Report Builder 3.0 , once I select database and tested connection successfully , It is asking for password. and By entering password it shows error. (I checked user credentials different way its working when testing connection. I am getting different error from local machine and client machine as described below)

Is this an issue with reporting service configuration or its oracle side connectivity problem. How can I solve this problem? Is it required to install 'Client Tool Connectivity' shared feature for oracle database connection?
Error from local machine ssrs 2008r2 64bit installed with Oracle client 64bit (using oracle client, I am able to access oracle but when I try though Report Builder it gives error as follows )
Unable to connect to datasource 'ORACLE'
An attampt was made to load program with an incorrect format (Exception from HRESULT : 0x8007000B )
Attempt to load oracle client libraries threw BadImageFormatException. This problem will occur when running in 64bit mode with 32bit oracle client components installed.

Error from Client machine when accessing oracle datasource from Report builder (As Report builder access through report manager, oracle client did not installed in this machine )
Unable to connect to datasource 'ORACLE'
System.Data.OracleClient requires Oracle Client software verson 8.1.7 or greater

Steps taken to solve problem:
Provided full access permission to oracle home folder
checked oracle and oracle client version. Its 64bit.

Environment   (from ssrs installation log file)
OS version:                    Windows Server 2003
  OS service pack:               Service Pack 2
  OS region:                     United States
  OS language:                   English (United States)
  OS architecture:               x64
  Process architecture:          64 Bit
  OS clustered:                  No
Description:                   SQL Server Database Services 2008 R2
  ProductName:                   SQL Server 2008 R2
  Type:                          RTM
  Version:                       10
  SPLevel:                       0
  Installation location:         F:\MSSQLInstall\........
  Installation edition:          ENTERPRISE  
Feature:                       Reporting Services
  Status:                        Passed
  MSI status:                    Passed
  Configuration status:          Passed

(From Oracle client log)

OraClient11g_home2
      Oracle Client 11.2.0.1.0
HOME SELECTION
--------------------------------------------------------------------------------
Central Inventory Location: "C:\Program Files\Oracle\Inventory"
Oracle Home           Status
OraClient11g_home2    Selected
PATH = C:\oracle\product\11.2.0\client_1\bin;
C:\Program Files (x86)\Windows Resource Kits\Tools\;
C:\Perl64\site\bin;
C:\Perl64\bin;
C:\Program Files (x86)\Support Tools\;
..........
Oracle 64bit, oracle client 64bit installed on ssrs machine.

Thanks

Answer : ssrs 2008r2 - Oracle 64bit access problem from Report builder 3.0

I resolved this issue myself.

SQL Server Report Builder is a 32 bit client application, it will not be able to use 64 bit version Oracle client and gives error when connecting to Oracle from Report Builder using 64bit client.

Steps for the Solution
1) To solve this, install Oracle client 32 bit version on the client machine to use with Report Builder.

2) Install Oracle client 64 bit version on Reporting Services server.