Re: Hung JDBC connections

Mike,

It was implemented in the 9_2 code

Dave Cramer

dave.cramer(at)credativ(dot)ca
http://www.credativ.ca


On Mon, Jun 11, 2012 at 11:02 AM, Mike Charnoky <noky@nextbus.com> wrote:
>
> On 06/09/2012 11:39 PM, Craig Ringer wrote:
>>
>>
>> Of course, It's not very friendly for the JDBC driver to wait indefinitely
>> without periodically checking and seeing if the connection was progressing,
>> so I'm glad to see that's changed in  9.1.
>>
> I took a look at the 9.1 JDBC driver source code, very enlightening. I see
> that Statement.setQueryTimeout() doesn't actually do anything! The method
> sets a member variable which is never accessed locally or by any subclasses
> or via getQueryTimeout(). There is even the following comment in
> AbstractJdbc2Statement:
>    /** Timeout (in seconds) for a query (not used) */
>    protected int timeout = 0;
>
> I see that ConnectionFactoryImpl does allow the underlying Socket's
> so_timeout and so_keepalive options to be set using the connection
> parameters string: http://jdbc.postgresql.org/documentation/91/connect.html
> (socketTimeout and tcpKeepAlive). Didn't realize these options existed, I
> will definitely be taking advantage of these.
>
> However, I see these options were available as far back as 8.4. What exactly
> are these driver changes in 9.1 that you mentioned???
>
>
> Mike
>
>
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