Hmm, I guess I fell into the trap of assuming everyone is on the same operating system as I am - sorry. I am on AIX, and the databases are started using operating system scripts. If this is the case, the actual startup command is run from a svrmgr session that is run from within the startup script. In this case, just run the script by issuing the command
'@script_name' before the exit statement that terminates the svrmgr session.

If you are on NT where the database is started via services, then, sorry, I am unable to help you.

HTH

David.