UnExpected System Error:New DataDource in DashBoad Designer

Hi,
You might see this Error when you try to create your First Business Intelligence DashBoard using DashBoard Designer.

So how to resolve this issue.
Check all these Steps if you have performed correctly

1. Do the following Central Administration >> Application Management >> Manage Service Application, and after that you will need to double click Secure Store Application followed by Generate New Key.
2. Also do the following Central Administration >> Application Management >> Manage Service Application >> PerformancePoint Service Application >> Manage, and then choose Update the PerformancePoint Unattended Service Account which is the first option.
3. This step has to be successful, and in the event that it fails you will have to get rid of the PerformancePoint Service Application and after that you will have recreate it.Do the following:Central Administration >> Application Management | Manage Service Application >> PerformancePoint Service Application >> Administrator, and then Add the Unattended Service Account as well as Mark Full Control.
4. PerformancePoint Services Application.Check if you see the performance point service application listed in the secure store service screen.
5. Ensure that the account running performance point services in Step3 has access to the site collection where you are trying to deploy the dashboards.
6. The credentials that you use to connect to the site using dashboard designer needs to be a site collection admin on the site collection.
7. The Account in Step3 has access to the Content Database of the BI Site Collection.

Installing Oracle 11g Client on Windows 2008 R2 64 bit to use in SSIS

Step 1: Download the 32 Bit and 64 Bit Client from the following location. http://www.oracle.com/technetwork/database/enterprise-edition/downloads/112010-win32soft-098987.html

Step 2: Install 64Bit Version of the Client first and repeat the same Steps for 32 Bit Client.

Here I am only showing screenshots for 32 Bit installation.Select Custom as shown in the ScreenShot below.

Step 3: Select the language you can to use in the Client tools.

Step 4: Specify the path where you want to Install the Oracle Client. Here I have selected D:\Oracle . You should use same path for 64 Bit Client Installation also. I have shown a summary for 64 Bit Client in Step 7 so its easy to understand on how to configure 64 Bit Client.

Step 5: Select all componenets expect Oracle Scheduler Agent.

Step 6: Port No by default is 2030. Keep it the default one. I selected 2031 because I had installed wrong version of Oracle Client before which used up the Port 2030 :) .

Step 7: Here is the Summary of 64 Bit Client Installation.

Step 8: If you have already installed 64 Bit Client it will give an Error/Warning saying the Service already exist. Just Click Continue because this service is already created by the 64 Bit Client Installation.

Step 9: For Listener just click Perform typical configuration and click Next.

Step 10: Finally it will finish and just Click End/Finish and the Oracle Client is Installed successfully.

Step 11: To complete either the 32-bit or 64-bit Oracle client installation processes make the following registry changes:
1. For both 32-bit and 64-bit installations, open up REGEDIT and make the following registry changes:
HKEY_LOCAL_MACHINE\Software\Microsoft\MSDTC\MTxOCI
OracleOciLib contains the value oci.dll
OracleSqlLib contains the value orasql11.dll (old value is SQLLib80.dll)
OracleXaLib contains the value oraclient11.dll (old value is xa80.dll)
2. For 64-bit installations:
HKEY_LOCAL_MACHINE\Software\Wow6432Node\Microsoft\MSDTC\MTxOCI
OracleOciLib contains the value oci.dll
OracleSqlLib contains the value orasql11.dll (old value is SQLLib80.dll)
OracleXaLib contains the value oraclient11.dll (old value is xa80.dll)

Step 12: Configure the Oracle clients (both 32 and 64 bits) by editing  the files tnsnames.ora and sqlnet.ora. 

Both files should be placed in the following Folders

D:\oracle\product\11.1.0\client_64\network\admin

D:\oracle\product\11.1.0\client_32\network\admin

Tnsnames.ora file should contain similar connection string as follow

AB10P =

  (DESCRIPTION =

    (ADDRESS_LIST =

      (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.190.12)(PORT = 1527))

    )

    (CONNECT_DATA =

      (SERVICE_NAME = AB10P .test.com)

    )

  )

Step 13: Use the "Oracle provider for OLE DB" from SSIS, don't use the "Microsoft Provider for Oracle" because a 64 bit version of it does not exist.

Sample Connectionstring : 

Provider=OraOLEDB.Oracle;Password=testPassword;Persist Security Info=True;User ID=User1;Data Source=AB10P

Tableprefix: Test1"."

Provider: Oracle Provider for  OLE DB