Performing DMO with System Move

You can run an update with database migration including a move of the primary application server from source to target system.

Prerequisites

You have prepared the target system landscape. See: System Move: Preparing Target System Landscape.
You have provided the complete download directory for the target system landscape in a separate directory. See: System Move: Providing Download Directory for the Target System
If necessary, you have aligned the operating systems of the different PAS hosts. See: System Move: Switching the Operating System.
In a Software Update Manager dialog, you have enabled the system move during the DMO procedure. See: System Move: Enabling DMO with System Move.

For further the prerequisites and restrictions concerning DMO with System Move, see section I/ Important General Information of the related SAP Note for the DMO that is mentioned in Required SAP Notes.

Context

The database migration option (DMO) of the Software Update Manager (SUM) offers the move of the primary application server instance from the source system landscape to a target system landscape during the DMO procedure.

The approach of this option is as follows: The SUM starts the system update and database migration procedure on the PAS of the source system and executes the first part of the procedure, including the export of the database content into files.

Then the files and the SUM directory are transferred to the target system, and the remaining part of the SUM with DMO procedure happens here. See below an overview of the principle and the steps in detail:

DMO with System Move: Overview

Procedure

You start SUM on the PAS host with the normal system update and database migration procedure.
During the SUM with DMO run, SUM displays a dialog in which you can enable the system move option (see also the prerequisites at the beginning of this chapter).
In a further dialog later on, you are prompted to transfer the SUM directory content from the source system to the target system.

For more information on the data transfer, see System Move: Data Transfer.
After the data transfer, the SUM with DMO procedure is complete on the source system, and you continue with the procedure on the target system.
You finish the system update and database migration procedure on the target system.
After the SUM run, carry out the necessary follow-up activities.
Note
- If you need to perform a reset during the procedure on the source or target system, consider the explanations in section Reset Option During System Move.
- in the title bar of the Software Update Manager, you are informed about the applied tool version including support package and patch level, and the current scenario and strategy as well. Regarding the system move, you are in addition informed about the current host, on which the Software Update Manager runs. This can be useful to better distinguish between source and target system.