Are these machines communicating through a firewall? Often firewalls
timeout idle tcp/ip connections.
On Fri, Sep 25, 2009 at 12:56 PM, Luiz Bernardi <lb@cplinformatica.com> wrote:
> hi John
>
>
> I have no idea of what may be happening. The system opens a connection and
> communicate normally. But after an idle time, it loses the connection and
> new transactions return with error.
> 16/09/2009 13:39:14 - SQL Error: no connection to the server
> 16/09/2009 13:39:14 - SQL Error: connection not open
>
>
> At this point he reconnects, the server creates a new connection that
> behaves exactly like the previous one.
>
>
>
> --
> Luiz Agnaldo Bernardi
> Fone 41 36755756
> 41 99979849
>
>
>
> On Fri, 25 Sep 2009 10:03:20 -0700
> John R Pierce <pierce@hogranch.com> wrote:
>>
>> Luiz Bernardi wrote:
>>>
>>> I am developing a system, using the ZeosLib, which maintains a permanent
>>> connection to the database.
>>>
>>> When the client loses the connection, the server does not recognize this
>>> and keeps the connection as if it were active. When the client attempts to
>>> reconnect, the server creates a new connection and the previous remains
>>> active.
>>
>> how does this happen ? TCP connections don't just wander off and get
>> lost.
>>
>>> This has caused an excessive increase in the number of active connections
>>> and hampered the use of the system.
>>>
>>> Have any way or setting to make postgres close idle connections?
>>
>> first, you'd have to identify that they were in fact 'lost' and not just
>> idle. we have apps that open a socket to postgres, issue some commands,
>> then sometimes sit for hours before more commands are issued.
>>
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