Re: Oracle listerner problem

From: Voyager <rt_at_astro.ocis.temple.edu>
Date: 1995/12/09
Message-ID: <4ab99t$6rt_at_cronkite.ocis.temple.edu>#1/1


Hello,

RF interference can cause many of these problems. A little bit of inductive coupling can go a long way in terms of highs and lows within TTL logic. There were cases where CBs with illegal 200w linear amplifiers hanging machines. Also broadcast radio antennas are a nuisance to such equipment. You should see how they automatically reprogram burglar alarms. :-)

Also try to use some sort of line conditioner or perhaps a UPS with clamping/boosting circuitry. I would recomend Minuteman. Make sure the power to the machines are "clean." Flakey power and delivery systems can definately cause a machine to hang. These may be reasons that they work at your site and fail at another site.

Man-yuen Cheung (manyuen_at_uhunix.uhcc.Hawaii.Edu) wrote:
: I have a mystery problem with Oracle and hope somebody have the answer.
: We are running Oracle7 on SCO Unix server with SQLNET v1. with a
: single PC client as a demo unit. We are using 10Base2 cable between them.
: Everything works in house but when we bring the unit on site for demo.
: Sometime, the application that's written in Powerbuilder would hang. After
: further troubleshooting, we found out that the oracle listerner would
: stop responsing on the server. If you do "tcpctl status", it would hang
: and nothing show and you have to do Crtl-C to break out, but the funny
: thing you could still ping the server from client or vice versa. We
: have tried different cable, network card, server with same setup. The problem
: still happens outside the office. When we bring the unit back and it would
: work like a champ. Ususally, we have to restart the database or listerner.
: Could it be power source related or interference? Any suggestion would
: be appreciated.
 

: BTW, we are using Wollongong Pathway TCP/IP stack on the client PC.
Received on Sat Dec 09 1995 - 00:00:00 CET

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