Adam wrote:

>--- In firebird-support@yahoogroups.com, Dennis McFall <dennis@a...>
>wrote:
>
>
>>We have the same Windows application running at about a dozen
>>completely independent sites, with a variety of hardware. Client
>>workstations (from 5 to 25 workstations) connect to the Firebird server
>>at the site; some are on Windows servers, some on Linux. The app is
>>running on Windows and Novell networks. Some of the sites have been
>>
>>
>very
>
>
>>active for 5 years. We use IP addresses in the connection string, not
>>server names.
>>
>>Now we have a new installation site, with the database on Linux;
>>
>>
>Windows
>
>
>>network. In every (client) case, after about ten minutes of inactivity,
>>the next attempt to access the database (query, update, etc.)
>>
>>
>results in
>
>
>>this error message:
>>---------------------------------
>>ISC ERROR CODE: 335544721
>>
>>ISC ERROR MESSAGE:
>>Unable to complete network request to host "222.111.44.55". [This
>>
>>
>isn't
>
>
>>a real IP address for us; edited for privacy]
>>Error reading data from the connection.
>>An existing connection was forcibly closed by the remote host.
>>---------------------------------
>>
>>
>>
>
>As you correctly identified, the connection has been broken. IIRC,
>there is no timeout parameter specific to Firebird, so it is either a
>network issue, or some UDF call is crashing the server. Check the
>Firebird log to see if it has been restarting itself. It would not
>surprise me if this is the case considering it is your first Linux
>install. Might be obvious, but make sure there is no "power save"
>setting that could be doing this.
>
>Adam
>
>

Adam:
Thanks for the reply. Actually, we have the app running on Linux servers
(FC3 and FC4) elsewhere with no problem. And we use no Firebird UDFs at
all, so I think that is not involved. I will have the Firebird log
checked: thanks for that tip, and also the one about "power save." I
wonder what "network issues" might include? I have suggested that they
check/replace the NIC, although the specifically "OK-for-10-minutes"
part of it kind of rules that out.

I really appreciate your responding. Have some nice days....

Dennis McFall