Skip to Content

Scenario

With Software Update Manager (SUM) 1.0 SP 20 (and higher), a new use case is introduced for DMO of SUM: DMO with System Move. This blog provides an introduction into this use case, which is of course described in the respective DMO guide, section “DMO with System Move”.

Note: you should be familiar with the DMO introduction before reading this blog.

Scenario is that you want to change the host of your Primary Application Server (PAS) instance during the DMO procedure. Until now, this was not possible during DMO.

Feature

With this use case, it is possible

  • to change the PAS host inside your System landscape, or
  • to move your system to a different network area / data center, or
  • to migrate your system from on-premise to HANA Enterprise Cloud (HEC), or other cloud providers

Note:

  • for SAP internal colleagues, this procedure was known as “DMO to SAP Cloud”. It is now available not only for targeting SAP Cloud.
  • “DMO with System Move” works for target database type SAP HANA and SAP ASE.
  • Restrictions are listed in the SAP note for DMO, see http://support.sap.com/sltoolset.

Approach

Preparation

  • Before starting the DMO procedure, you have to set up the new PAS host in the target landscape, in addition to the target database
  • You do not have to set any specific control file or parameter before starting the SUM

Enabling the use case

  • On the dialog with DMO details (like Migration Key), an option “DMO with System Move” is offered.
  • When this option is selected, the SUM will execute some tasks in the source landscape (like export the data from the source database), and afterwards execute some tasks in the target landscape (like Import the data to the target database).
  • In the source landscape, the target database parameters (like database host name) do not have to be provided
  • Once the tasks in the source landscape are finished, the SUM will tell you on a dialog to copy the SUM directory to the target landscape, in which the procedure will be continued. The SUM directory contains all required files
  • Transfer of SUM directory can be done e.g. via network (if possible), or via USB disk.

To reduce the downtime, it is possible to use a parallel mode in which data export and data import is running in parallel. Interested? You have to consult the DMO guide anyhow – the parallel mode is described in there, and is beyond this short introduction.

Kind regards,

Boris Rubarth
Product Manager SUM, SAP SE

To report this post you need to login first.

130 Comments

You must be Logged on to comment or reply to a post.

  1. J A

    Hello Boris Rubarth,

    Can we move to Cloud provider using Classic DMO (no System Move) then uninstall PAS and ASCS in source datacenter and then install a new ASCS and PAS on cloud provider?

    Is this technically possible and/or supported? 

    Best regards,

    JAM

    (0) 
    1. Boris Rubarth Post author

      Hello JAM,

      for standard DMO, this approach is not supported, and we have noted this in the respective SAP note on DMO:

      “Using DMO for a migration across data center is not supported (PAS host and DB host in different data center). …”

      You find the actual note listed in http://support.sap.com/sltoolset.

      Best regards, Boris

       

      (0) 
      1. J A

        Thank you for the input Boris Rubarth . Let me explain a little more the scenario:

        The system we want to migrate is currently on iSeries platform. We want to move the system to a cloud provider where there’s no iSeries Platform available. Thats why we can’t use the “System move” option.

        So we were thinkg about using the Standard DMO across datacenters until the migration process is done, Not for productive use. After the DMO process have finished, uninstall the PAS and ASCS on current datacenter and then install them in the Cloud datacenter, then Go Live. Can this be supported or work as an exception?

        Best regards,

        JAM

         

         

        (0) 

Leave a Reply