Unixware problem

Dear All,

I have a HP Netserver LH3 server which has unixware 7 os with oracle. Suddenly it shows a error message that " Raw Stack Dump beigns at 0xFFFDABIC...
Generating Selective dump
Storing system memory image for crash analysis....
#scanning memory....dumping to disk
(Press any key to abort dump)
system memory dump completed
system has halted and may be powered off ( press any key to reboot)

now the server frequently restarted .... please help me out. I have already change the RAM no update found...problem still persists.

Thanx in advanced...
Rgds
Chiranjib