Upgrade from SAP R/3 4.6C to SAP ECC 6.0

Dear All,

Our organisation has been running SAP R/3 4.6C on Solaris 8 with Oracle 8i database. We are considering an upgrade to SAP ECC 6.0.

I have already checked the SAP Marketplace (Product Availability Matrix) and found that SAP R/3 4.6C first needs to be upgraded to mySAP ERP 2004 (SAP ECC 5.0) and then from SAP ECC 5.0 to SAP ECC 6.0.

My first question is whether I am on the right track.

Secondly, I was going through various SAP Upgrade strategies and curious to know the difference between technical upgrade and functional upgrade.

Please correct me if I am wrong - technical upgrade is when you technically upgrading the SAP ECC release from 4.6C to 5.0 (that is, upgrading Operating System, Database and ECC).

Once it has been completed, business processes (functional modules) need to be remapped. The development needs to be reworked upon (Modification Adjustment). This is what is known as functional upgrade.

I would appreciate if someone throws some light on my understanding on this subject.

Regards.

Wolfgang.