Another possibility is a full console message buffer. If any keys have been
struck on the console keyboard, the system thinks someone is in the process
of entering a command, and will suppress console messages until it sees a
carriage return. As console messages accumulate, the buffer eventually
fills, and anything that needs to issue a console message (such as a signon)
will hang waiting for the message to be delivered. This situation can
usually be cleared by hitting the return key on the console. I have seen
situations where a hard reset of the console terminal is necessary to clear
the problem.
I would like to recommend the Auto Restart/iX product. This allows you to
send memory dumps to disc files. A dump is very quick with this product, so
you are not faced with the choice of delaying production availability in
order to get a problem diagnosis.
-----Original Message-----
From: Eben Yong [mailto:[log in to unmask]]
Sent: Friday, December 06, 2002 7:37 AM
To: [log in to unmask]
Subject: HP3000 'unavailable' question
I arrived at the office at about 6:15am this morning and was greeted by
an 'unresponsive' HP3000-not the most auspicious beginning for any day,
much less Friday.
Here are the symptoms:
* was able to ping the system, and received replies
* was able to get an HP prompt, but unable to log in (system would
'hang' after the HELLO statement)
* the last console message appears to be at approx. 12:14am
* rebooted the system and verified that the system became
unresponsive shortly after midnight (our Job Rescue log did not show any
auto-scheduled jobs as having run)
I chose to bring up the system since it is a production day, rather than
attempting a dump (that would have cut an additional 60-90 minutes-or
longer-out of the work day... and folks were here at 5:30am ready to
work).
The system (997/600 running MPE 6.5pp2) is up and running now; if there
are similar experiences, with known or highly suspect causes, I would be
glad to hear of them. Thanks.
-------------------------------------
Eben Yong
MIS Manager
Health Plan of San Mateo
TEL:650-616-2010
FAX:707-281-2691
www.hpsm.org
[log in to unmask]
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