When db = down, but is still shutting down
$OH/bin > sysresv -f
$OH/bin > sysresv -help
sysresv: illegal option -- help
usage : sysresv [-if] [-d < on/off >] [-l sid1 < sid2 >...]
-i : Prompt before removing ipc resources for each sid
-f : Remove ipc resources silently, overrides -i option
-d : List ipc resources for each sid if on
-l sid1 <sid2> .. : apply sysresv to each sid
Default : sysresv -d on -l $ORACLE_SID
Note : ipc resources will be attempted to be deleted for a
sid only if there is no currently running instance
with that sid.