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ERP 2004 to ERP 6 Ehp 5 Upgrade with conversion from 32-bit to 64-bit

Hello everyone,

After reading numerous install/upgrade guides, SAP notes, forum, and blog entries, I have still have questions on the upgrade we are currently planning. The current state is:

ERP 2004 SPS 11 (ERP SP Level 11, NW SP level 16)

Windows 2003 32-bit

SQL Server 2000 32-bit

Our desired end state:

ERP 6 EhP 5 (assumes it will have been released prior to starting our upgrade)

Windows 2008 R2 64-bit

SQL Server 2008 R2 64-bit.

Current thoughts:

The PAM for ERP 6 indicates that 32-bit and SQL 2000 are supported for upgrade only so:

Step 1: Upgrade current ERP 2004 SPS 11 in-place to ERP 6 EhP 5

Step 2: Migrate to new 64-bit VMs with Windows 2008 R2/SQL Server 2008 R2

The reason we are planning the 64-bit migration second is that SQL Server needs to be v2005+ to run 64-bit and ERP 2004 needs to be at a higher SP to support SQL 2005. We strongly desire to avoid having to do two regression/user acceptance test cycles (one for the migration, one for the upgrade.)

So my questions are:

Is our desired plan techinically doable?

Are there any other intermediate stopping points that we need to be aware of that would cause this to be more than a two hop process?

Is there something else that we are not taking into consideration that would significantly alter our plan?

Thanks,

Brian

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3 Answers

  • Best Answer
    Posted on May 03, 2011 at 10:18 AM

    Hello Brian,

    Your plan appears fine. As per the PAM you can have 32-bt for the upgrade.

    I would recommend to take complete backups after the upgrade and before the 32-bit -> 64-bit migration to ensure you have safe points but other than that, this is a valid procedure.

    Regards,

    Paul

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  • Posted on May 03, 2011 at 09:00 PM

    Hi,

    I always prefer to move to 64 bits and new machine Before upgrade just for the advantage in memory management and faster HW because this usually means less downtime but as you are moving to 2008 and SQL 2008 and there is more experience and Notes around 2003 I will second your plan (if something happens there it is more likely that you will find the solution). Also if going to a newer SPS in actual version will complicate the plan so this is a good reason too to keep that plan.

    Regards,

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    Former Member
    Posted on May 04, 2011 at 01:01 PM

    ERP 6.0 is supported on MS SQL SERVER 2000 and WINDOWS SERVER 2003 32BIT, but with a restriction

    Productive applications might require more address space than the 32 bit limitations allow. The usage of 32 bit platforms for productive Netweaver 7.xx scenarios is not recommended. See SAP note 996600 for more details

    Data from PAM.

    So it is better you move to 64 bit before Upgrade and then carry out Upgrade to ECC 6.0

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    • Yes, when EHP5 is released then you will be able to upgrade to ERP 6 EHP5 in one step, I don´t see why you couldn´t, in fact in the Guide and SAP Notes you will find that for an upgrade to a higher version you don´t need to be at an specific SPS unless you are planning to do an thechnical upgrade only.