Re: JDBC causing the connection to close after executing a COPY command

From: Kris Jurka <books(at)ejurka(dot)com>
To: Altaf Malik <mmalik_altaf(at)yahoo(dot)com>
Cc: Dave Cramer <pg(at)fastcrypt(dot)com>, pgsql-jdbc(at)postgresql(dot)org
Subject: Re: JDBC causing the connection to close after executing a COPY command
Date: 2007-12-13 16:36:18
Message-ID: Pine.BSO.4.64.0712131126070.28251@leary.csoft.net
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On Thu, 13 Dec 2007, Altaf Malik wrote:

> Also if i enable logging in JDBC, and only execute the COPY statement,
> log shows that FrontEnd sent a Terminate message.
>

What's happening is that after receiving the server's message that it
wants to do a COPY, the driver doesn't understand the protocol and dies
with an "java.io.IOException: Unexpected packet type: " error. Once this
happens the driver can't do anything but close the connection. As part of
the connection closing process it issues a Terminate message to the
server, in case it's still listening and the protocol is in a good enough
state that the server might receive it. The driver is not explicitly
terminating the connection upon receiving a copy request, that's just what
happens when it gets confused.

Kris Jurka

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