Use the set /HOST send_break_action command to bring the server to a menu from which you can choose to go to the OpenBoot PROM prompt (ok). If you have configured the kmdb debugger, then specifying the send_break_action=break command brings the server into debug mode.
Specify send_break_action=dumpcore to force a core dump.
-> set send_break_action=value
where value can be:
break – Sends a break to the host.
dumpcore – Forces a panic core dump of the managed system OS (not supported by all OS versions).