I did try what you suggested:
sdelayer -o register -l M_SIGN_INVENTORY,GEOM -C OBJECTID -u %USERID% -p %USERPASSWORD% -e 3npM -x 0,0,3048 -z 0,10000 -P HIGH -t SDO_GEOMETRY -G file=%CRSFILE%
sdetable -o add_uuid_column -t M_SIGN_INVENTORY -u %USERID% -p %USERPASSWORD% -c GLOBALID
The add_uuid_column, as I found, has nothing to do with GlobalID because after replication of feature layers the features are read-only which implies that GlobalId is not defined as esri sees that. Last thing to try is a python script:
# Import system modules
import arcpy
from arcpy import env
# Set workspace
env.workspace = "C:/Data/MySDEdata.sde"
# Set local variables
in_dataset = "AMS_AA.M_SIGN_INVENTORY"
# Execute AddGlobalIDs
arcpy.AddGlobalIDs_management(in_dataset)
Where AMS_AA is schema name, [M_SIGN_INVENTORY] is feature class name, the same as Oracle table. However, the scrip above fails with errorExecuteError: ERROR 000582: Error occurred during execution.
Failed to execute (AddGlobalIDs).
However, I do not know anything about python, I just took above script from documentation and replaced feature class name with mine.