ORA-00449: background process 'LGWR' unexpectedly terminated with error 340 ??

Hi we have a server that is stoping at wierd times. I have done a search on the error below and have found nothing. Does anyone have any idea?

• 2002-09-05 00:08:22.734
• SESSION ID:(14.19) 2002-09-05 00:08:22.515 kgefec: fatal error 0
• 2002-09-05 00:08:22.781 ksedmp: internal or fatal error ORA-00603: ORACLE server session terminated by fatal error ORA-00449: background process 'LGWR' unexpectedly terminated with error 340 ORA-00340: IO error processing online log of thread ORA-00449: background process 'LGWR' unexpectedly terminated with error 340 ORA-00340: IO error processing online log of thread ----- Call Stack Trace ----- calling call entry argument values in hex location type point (? means dubious value) -------------------- -------- -------------------- -

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