If your're Netbackup cluster switches or restarts unexpected, you can find the process causing the switch in :
/usr/openv/netbackup/bin/cluster/AGENT_DEBUG.log
A example:
# grep "Detected process offline" AGENT_DEBUG.log
02/23/10 14:55:091 Detected process offline:nbemm monitor::main
02/23/10 15:00:331 Detected process offline:vmd monitor::main
02/23/10 15:02:331 Detected process offline:nbemm monitor::main
02/23/10 15:42:031 Detected process offline:vmd monitor::main
02/23/10 15:44:031 Detected process offline:nbstserv monitor::main
