[Spacewalk-list] [Spacewalk-devel] I think I found the root cause of the PostgreSQL Idle in transaction connection build up.

[Paul Robert Marino]

Well you are right there is nothing in the change log that idicates that
this issue existed or how its fixed.
But as I said it seems to fix it there is probably a side effect fix that
was not planed but seems to work.
The results are rediculously obvious initialy now honestly I think it needs
a few days of testing to prove it, and I would like for others to confirm
it but from my initial test it on one of my development instances it looks
good. I would like other people to test it because I'm not using monitoring
on that instance and I only have a few systems attached to it but the
difference is so obvious there is deffinitly something there.
By the way I've seen the change log betwean 701to 702 but I haven't seen
the change log betwean 702 and 703 and I looked its not on their site or in
the source package as far as I could initialy tell.

While I admit I can't point to a reason in the change log why, it at least
initialy seems to work. I think if any thing it may be a compound
correction of multiple bugs that may of fixed a larger harder to pinpoint
issue.
 On Nov 6, 2012 12:01 AM, "Tom Lane" <tgl at redhat.com> wrote:

> Paul Robert Marino <prmarino1 at gmail.com> writes:
> > Ive been doing some testing and I am fairly positive I found out why
> > the number of connections in PostgreSQL increases and its not a
> > spacewalk bug at all.
> > It looks like its a JDBC bug [ and is fixed in 8.4-703 ]
>
> This is really interesting, but I looked through the upstream commit
> logs, and I can't see any patches between 8.4-701 and 8.4-703 that look
> like they'd cure a "connection leak" such as you're describing.  There
> are a couple of fixes for possible loss-of-protocol-sync issues, but it
> doesn't seem like that would result in silent leakage; the symptoms
> would be pretty obvious.
>
> Have you poked into the client-side state to see what that end thinks
> it's doing with the idle connections?
>
>                         regards, tom lane
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://listman.redhat.com/archives/spacewalk-list/attachments/20121106/0926b833/attachment.htm>