SQL Server Agent 2012 not executing SSIS 2012 package that connects to Oracle but runs OK from SSIS

I've been fighting this for a while now, and tried many things, I am finally overwhelmed.

I had many SSIS packages in SQL Server 2008 working perfectly, bringing data from SQL, MySQL and Oracle. Then I decided to upgrade to SQL 2012 and the packages won't run. I created them all again using VS2010 and they run great from SSIS, but the ones that connect to Oracle do not work. After several errors, I got this:

Executed as user: Domain\UserName. Microsoft (R) SQL Server Execute Package Utility Version 11.0.2100.60 for 64-bit Copyright (C) Microsoft Corporation. All rights reserved. Started: 12:00:00 PM Error: 2014-03-01 12:00:04.25 Code: 0xC0208449 Source: SalesBacklog ADO NET Source [2] Description: ADO NET Source has failed to acquire the connection {01F532A5-4542-4833-9103-5FCAEC4EA4A2} with the following error message: "Attempt to load Oracle client libraries threw BadImageFormatException. This problem will occur when running in 64 bit mode with the 32 bit Oracle client components installed.". End Error Error: 2014-03-01 12:00:04.25 Code: 0xC0047017 Source: SalesBacklog SSIS.Pipeline Description: ADO NET Source failed validation and returned error code 0xC0208449. End Error Error: 2014-03-01 12:00:04.25 Code: 0xC004700C Source: SalesBacklog SSIS.Pipeline Description: One or more component failed validation. End Error Error: 2014-03-01 12:00:04.25 Code: 0xC0024107 Source: SalesBacklog Description: There were errors during task validation. End Error DTExec: The package execution returned DTSER_FAILURE (1). Started: 12:00:00 PM Finished: 12:00:04 PM Elapsed: 3.297 seconds. The package execution failed. The step failed.

My new server specs are:

• Platform: NT64
• System: Xeon L5520 2.27GHz (16 proc), 66.1GB RAM
• OS: Windows Server 2012
• DB: SQL Server 2012 – 11.0.2100

I've installed, uninstalled, over and over, in different order, the Oracle 32 and 64 Clients. But no luck.

Lately I strongly believe that my problem might be related to permissions of the SQL Agent to run the package and not a problem with the Oracle Clients. I tried all types of authentications (which are quite confusing at times) and I get another wide arrange of errors.

Is anyone out there with any idea of how should I go about it? I am starting from scratch and I will try every step, all over again. If I find the issue, I'll keep you posted.

Thank you!