If a simple reset does not clear a system problem, you can power the system off and on with this procedure.
# shutdown -g0 -i0 -y # svc.startd: The system is coming down. Please wait. svc.startd: 91 system services are now being stopped. Jun 12 19:46:57 wgs40-58 syslogd: going down on signal 15 svc.startd: The system is down. syncing file systems... done Program terminated r)eboot, o)k prompt, h)alt?
ok #. ->
-> stop /SYS Are you sure you want to stop /SYS (y/n)? y Stopping /SYS ->
Note - To perform an immediate and ungraceful shutdown, use the stop -force -script /SYS or stop -script /SYS commands. These commands stop everything immediately, so ensure that all data is saved before entering these commands.
-> start /SYS Are you sure you want to start /SYS (y/n)? y Starting /SYS ->
Note - To force a power-on sequence, use the start -script /SYS command.
-> start /SP/console Are you sure you want to start /SP/console (y/n)? y Serial console started. To stop, type #.
The systems displays various messages, followed by the ok prompt.
Sun SPARC Enterprise T5120 and T5220 Servers Administration Guide