topic Re: Old Memory logs in Operating System - HP-UX

Old Memory logs

AL_3001 — Tue, 23 Oct 2007 23:21:25 GMT

Hi Friends,
How to find old memory logs in HP-UX 11.1. One way is through diagonistic logs in /var/stm/logs through log tool cstm, however it did not help much. Is there any other way to find logs?

I need to find memory log of 18th Oct 2007 and today is 24th Oct 2007. I need to investigate why memory dumps were generated for SAP.

Thanks.

Re: Old Memory logs

whiteknight — Tue, 23 Oct 2007 23:53:21 GMT

Ashish

You need check on /var/opt/resmon/log/event.log

WK

Re: Old Memory logs

Torsten. — Wed, 24 Oct 2007 00:29:51 GMT

It depends.

The diagnostic will log hardware related logs about the memory, but if you receive a core dump due to application problems you will have a core file, but no diagnostic log about this.

Re: Old Memory logs

Torsten. — Wed, 24 Oct 2007 00:38:23 GMT

And BTW, a recoverable memory error will be invisible to your application, a non-recoverable error will take the server down.

What error is recoverable or not depends on the hardware.

Re: Old Memory logs

Hein van den Heuvel — Wed, 24 Oct 2007 06:24:11 GMT

If/when I needed to investigate SAP memory dumps I never looked in system information. The SAP saved data normally is more than enough.

The SAP transaction ST22 will list the available short-dumps. And, as always, SM21 will give a summary of all reported problems and potentially provides a little more context ('what else was going on')

The dumps themselves would live in /usr/sap/$SID/work if I recall.

hth,
Hein.

Re: Old Memory logs

Andrew Merritt_2 — Thu, 25 Oct 2007 03:22:48 GMT

Hi Ashish,

I think you are confusing problems due to lack of available memory with hardware problems with the memory itself. CSTM reports on hardware problems; if your application is failing and producing a core file (I assume that's what you mean by 'memory dump'; in that case, it's not even necessarily a problem due to lack of memory anyway), then that's not going to be logged in the hardware memory log.

You need to analyse the core file, or whatever is that is being produced, and find out why your application is dying. You may need to contact your software vendor for assistance.

Andrew

Re: Old Memory logs

AL_3001 — Thu, 25 Oct 2007 04:02:20 GMT

Thanks everyone for your inputs.