Hi,
I could find only this in one of the SAP note. Note 592393 - FAQ: Oracle
Point -11
- 11. Where can I find the Oracle installation or upgrade CDs?
To install the Oracle software, use only the Oracle RDBMS CDs delivered by SAP. You must not use CDs obtained directly from Oracle.
For example, you can order the RDBMS CDs by opening a message on component XX-SER-SWFL-SHIP. It is important that you correctly specify the database release and operating system.
If this is not sufficient for your customer, then I would advise to raise a SAP message and get SAP expert's comments on same.
That should be sufficient for your customer. I am sure SAP also would response the same but at-least you will have something to show your customer with confidence. I used to do the same 
Cheers !!!
Ashish