topic Re: Source Quench Received Problem in Operating System - HP-UX

Source Quench Received Problem

SHIRISH_1 — Wed, 11 Oct 2000 12:51:52 GMT

We are running up on HP-UX 11.x with Oracle Applications (ERP). There is a breakage in conactivity during the working hours and users are disconnected while doing any processing at client end. When we ping the server, it flashes the message 'source quench received'. This causes useless processes on the server and hence unnecessary load on server. Please suggest the way-out as early as possible.
Thanks in anticipation.

Re: Source Quench Received Problem

Alex Glennie — Wed, 11 Oct 2000 13:00:29 GMT

Receiving "Source Quench Received" messages on primary network interface.

These errors are totally harmless but can be a nuisance if a ping monitor is
being run on the network. There is currently no patch to remove the message but
the change has been implemented in HP-UX release 11.01. It is not known at this
time when 11.01 will be released. In the interim, there are two ways that these
error messages can be suppressed. A single command will take care of them
temporarily or the /etc/rc.config.d/nddconf file can be modified to make the
change permanent.

The following command will suppress the messages until the next time the system
is reset.

# ndd -set /dev/ip ip_send_source_quench 0

A permanent solution is to add the following lines to the file
/etc/rc.config.d/nddconf:

TRANSPORT_NAME[INDEX]=ip
NDD_NAME[INDEX]=ip_send_source_quench
NDD_VALUE[INDEX]=0

Note: Substitute INDEX with a proper value depending on what other entries are
in the file. See the comment in the nddconf file for advice on how to set the
value of INDEX.

Re: Source Quench Received Problem

Matt Runyan — Tue, 28 Nov 2000 15:48:17 GMT

you say that the source quench messages can be safely ignored?

I'm confused. I've noticed that on my server, when I again re-enable source quench...my users connecting to oracle/sqlnet port 1521:

a) cannot ping my server, they receive a source quench error

b) suffer intermittent (at best) connectivity to the server, with disappearing connections.

I am trying to determine if this is purely coincidental (I don't believe so)... when I disable source quench everything once again returns to "normal"...enable it and I have connectivity issues.

any ideas?

Re: Source Quench Received Problem

Dan Keister — Fri, 16 Mar 2001 16:53:32 GMT

Matt Runyan,
I am experiencing the same problem, oracle users are being disconnected and when pinging the server source quench messages are being returned. you stated in your post that when you turn off sourch quench you have better client communication results. Is this still true and if so do you contribute it to the sourch quench being off? If you found that sourch quench was not the problem what did you find the reason for clients being disconnected? any info on the subject would be greatly appreciated.

Thank you in advance,
Dan

Re: Source Quench Received Problem

Rita C Workman — Fri, 16 Mar 2001 19:20:46 GMT

Take a look at this thread...maybe it will help answer it for you:

http://forums.itrc.hp.com/cm/QuestionAnswer/1,1150,0xea6837f45ef7d4118fef0090279cd0f9,00.html

/rcw