It is also not possible to remove the auto update process from the Dimensions server, although the dfs/upgrade_config.dat file may be configured to prevent the dmupgradesrv process from connecting to a database, effectively disabling it.
DMUPGRADESRV 2019/02/07 22:34:26 UTC 0.002 E P28941 T1 UpgSrv: main: Exiting due to an unexpected Dimensions exception: MDHNET4502205E Error: Failed to open file /opt/serena/dimensions/14.4/cm/dfs/registry.dat (fopen() failed with 13 Permission denied)