Oracle Message ORA-00474 - SMON process terminated with error

ERRORSMON process terminated with error
CAUSEThe system cleanup process died
ACTIONWarm start instance

1014418ORA-07445 [KKSFREEHEAP] and database crash on 10.2.0.2
308880Database processes crash
541695ORA-00470/ORA-00471/ORA-00472/ORA-00473/ORA-00474
172747SAP on HP-UX: OS kernel parameter recommendations