when running dsmadmc in the CONSOLE mode, is it possible to have the
messages prepended with timestamps?

Something like:
[root@tristan ~]# dsmadmc -console
IBM Tivoli Storage Manager
Command Line Administrative Interface - Version 5, Release 4, Level 1.0
(c) Copyright by IBM Corporation and other(s) 1990, 2007. All Rights Reserved.

Enter your user id:  <XXX>

Enter your password:

Session established with server TRISTAN: Linux/i386
  Server Version 5, Release 3, Level 5.1
  Server date/time: 07/30/2007 12:32:27  Last access: 07/30/2007 12:03:19

07/29/07 15:45:45 ANR2017I Administrator CCC issued command: QUERY PROCESS
07/29/07 15:45:46 ANR2017I Administrator CCC issued command: QUERY SESSION

instead of just:
ANR2017I Administrator CCC issued command: QUERY PROCESS
ANR2017I Administrator CCC issued command: QUERY SESSION

--
Warm regards,
Michael Green