The phase EUCLONEMIGDTRUN is a core downtime migration phase within the Database Migration Option (DMO) procedure. A key optimization feature of DMO is the parallel execution of data export from the source database and data import into the target database. For each data package (bucket), DMO initiates a pair of R3load processes: one for export and one for import. The SUM user interface, specifically the Charts Control Center, visualizes each of these concurrent pairs as a single "process bucket". Therefore, seeing 40 process buckets means 40 export processes and 40 import processes are running simultaneously, which correctly utilizes the 80 total R3load processes configured by the user for the downtime phase.

B. This is incorrect; the number of processes is determined by the user's downtime configuration (80 in this case), not a fixed, lower limit for this specific phase.

C. This is incorrect because the phase name suffix DT explicitly signifies that the SUM tool is operating in the technical downtime phase.

D. This is incorrect; while CPU cores are a factor for performance, they do not impose a rigid technical limit on the number of R3load processes. The system can schedule more processes than available cores.

1. SAP SE

"Database Migration Option (DMO) of Software Update Manager 2.0 SP17" Guide

(2023-05-12).

Section 2.2

"DMO-Specifics"

Page 10: "To reduce the technical downtime

DMO runs the import and the export of application tables in parallel. The R3load processes for the export read the data from the source database

and the R3load processes for the import write the data to the target database." This document confirms the parallel export/import mechanism

which forms the basis of R3load "pairs".

2. SAP SE

"Database Migration Option (DMO) of Software Update Manager 2.0 SP17" Guide

(2023-05-12).

Section 5.4.3.2

"Migration - Advanced"

Page 61: This section shows the dialog screen "Number of R3load Processes for Uptime/Downtime" where the user defines the number of parallel processes. This confirms that the number of processes (80 in the scenario) is a user-defined parameter for the downtime phase

which is then split between the paired export and import tasks.