topic Re: EMS Memory error in Operating System - HP-UX

EMS Memory error

Philemon_2 — Mon, 18 Feb 2008 18:44:12 GMT

I have the following error reported by EMS daiy. All experts please advice me the fix.

Event Monitor notification information:

Notification Time: Sun Feb 17 20:33:46 2008

hrmdev sent Event Monitor notification information:

/system/events/memory_ia64/memory is >= 1.
Its current value is MAJORWARNING(3).

Event data from monitor:

Event Time..........: Sun Feb 17 20:33:46 2008
Severity............: MAJORWARNING
Monitor.............: memory_ia64
Event #.............: 3100
System..............: hrmdev.it.hughessupply.com

Summary:
Memory Event Type : Single bit error (SBE) event. A correctable single
bit error has been detected and logged.

Description of Error:

The memory component: DIMM 0B

is experiencing correctable single bit errors at the same address on the
same component. Since the page has not been deallocated and is still
active, this indicates the address is located in kernel or reserved memory.

Probable Cause / Recommended Action:

Although the single bit errors are being corrected, it may be advisable to
evaluate whether the system should be rebooted. Rebooting the system may
allow the memory page to be deallocated so it is no longer referenced. If
an excessive rate of single bit errors occur, an event with higher severity
will be generated.

Additional Event Data:
System IP Address...: 11.224.21.75
Event Id............: 0x47b8e07a00000000
Monitor Version.....: B.01.00
Event Class.........: Memory
Client Configuration File...........:
/var/stm/config/tools/monitor/default_memory_ia64.clcfg
Client Configuration File Version...: A.01.00
Qualification criteria met.
Number of events..: 65
Received within...: 1 day(s)
Associated OS error log entry id(s):
None
Additional System Data:
System Model Number.............: ia64 hp server rx2600
EMS Version.....................: A.04.10
STM Version.....................: C.46.00
OS Version......................: B.11.23
Latest information on this event:
http://docs.hp.com/hpux/content/hardware/ems/memory_ia64.htm#3100

v-v-v-v-v-v-v-v-v-v-v-v-v D E T A I L S v-v-v-v-v-v-v-v-v-v-v-v-v

Component Data:
DIMM Location...........: DIMM 0B
Serial Number...........: 97b20e45

Re: EMS Memory error

Pete Randall — Mon, 18 Feb 2008 18:58:17 GMT

The fix is adviced right in the notification:

"Although the single bit errors are being corrected, it may be advisable to evaluate whether the system should be rebooted. Rebooting the system may allow the memory page to be deallocated so it is no longer referenced."

Try rebooting.

Pete

Re: EMS Memory error

Andres_13 — Mon, 18 Feb 2008 19:17:07 GMT

Also consider "If an excessive rate of single bit errors occur, an event with higher severity will be generated." If i understood this may your case so i advise to open a call within HP an find and replace the faulting DIMM if any.

HTH

Re: EMS Memory error

Philemon_2 — Mon, 18 Feb 2008 19:32:54 GMT

Hi Pete Randall,

Thanks for your reply I appreciate it. The server was rebooted on 7th Dec 2007 sence then the error was repeating. could you please advice me what to i do? do you want me to reboot onceagain?

Thanks'
Philemon

Re: EMS Memory error

BW Moll — Mon, 18 Feb 2008 19:44:19 GMT

If you reboot and the error still persists, I strongly suspect you may have a faulty DIMM

In that event, a hardware call would be in order to replace the module

Re: EMS Memory error

Torsten. — Tue, 19 Feb 2008 06:34:08 GMT

The last reboot was on 7th feb, the error message is from 17th feb.

So try to reboot and look if the error repeats.

Re: EMS Memory error

Torsten. — Tue, 19 Feb 2008 06:36:56 GMT

Some explanation:

http://forums12.itrc.hp.com/service/forums/questionanswer.do?threadId=1049776