On Thu, 2 Oct 2003 09:56:38 -0400
David E Ehresman <deehre01 AT LOUISVILLE DOT EDU> wrote:

Now this makes some bells ring over here. IIRC there was some bug in the AIX
5.1 TCP code, which in particular would shouw on TSM servers. I don't know
what it was any more, nor what the fix is (It was just smalltalk with some
engeneer once). You might want to check the APAR DB....


> I had that problem and it was a aix tcp tuning issue.  Do a
>    netstat -v ent1 | grep "Receive Pool Buffer"
> where ent1 is the adaptor that your tsm traffic runs on.  If your "No
> Receive Pool Buffer Errors:" line is greater than zero you have the same
> problem I had.  We raised our receive pool buffer size up to 2048 and
> that fixed our problem.
>
> The ethernet adaptor has to be down to change the setting.  The command
> is:
>   chdev -l ent"x" -a rxbuf_pool_size=2048
> where x is the adaptor name.
>
> David Ehresman
> University of Louisville
>
>
> >>> mark.ferraretto AT DB DOT COM 10/1/2003 8:21:01 PM >>>
> All,
>
> I am running TSM 5.1.6.1  on AIX 5.1ML3.  In the last few weeks it's
> started exhibiting a rather strange problem where the scheduler seems
> not to contact the clients to start the backup schedule.
>
> Halting TSM and restarting it seems to fix it for a few days and then
> it will start again.
>
> Checking the actlog, I stop seeing 'Schedule prompter contacting...'
> messages.  And, of course, the following day I see a whole stack of
> 'Missed' backups.  Sometimes the prompter may contact one or two (out of
> about 100) systems before stopping altogether.  We have 100 Nodes - 50
> Unix (Solaris/Linux/AIX) and 50 NT/2000 systems.  All are running
> file-based backups.   We also have a single Notes server (NT) that's
> backed up using TDP.  All are in prompted mode.
>
> I haven't been able to find any error messages in the TSM log.  Just an
> absence of prompter messages like I said before.
>
> Can anyone help?
>
> Mark
>
>
> --
> Mark Ferraretto
> Unix Systems Administrator
> Deutsche Bank Hong Kong
> w: +852 2203 6362        m: +852 9558 8032        f: +852 2203 6971
> mark.ferraretto AT db DOT com
>
>
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