| From: | Merlin Moncure <mmoncure(at)gmail(dot)com> |
|---|---|
| To: | "Tarabas (Manuel Rorarius)" <tarabas(at)tarabas(dot)de> |
| Cc: | Scott Marlowe <scott(dot)marlowe(at)gmail(dot)com>, pgsql-general(at)postgresql(dot)org |
| Subject: | Re: [bulk] Re: Non returning Transactions/Many Locks in Postgres 9.0.4 and 9.0.1 |
| Date: | 2011-06-08 14:38:08 |
| Message-ID: | BANLkTik36muCVfLxARcK3vMyFWOYgOgufA@mail.gmail.com |
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| Lists: | pgsql-general |
On Wed, Jun 8, 2011 at 9:32 AM, Tarabas <tarabas(at)tarabas(dot)de> wrote:
> Hello,
>
> the problem just resurfaced and the Wiki page dows not really help
> very much.
>
> When i look into the pg_stat_activity, i only see that the connections
> all state "<IDLE> in transaction".
>
> Is there any way to find out what the transaction is doing exactly to
> be able to debug the Problem?
The transactions aren't doing anything. Your applciation began
transactions in your application but didn't commit them. Classic
causes of this are:
1) straight up bugs (code branches that do not commit)
2) multi threaded code, especially when threads share connections
(basically a factory for #1 above)
3) busted connection poolers (php_pconnect)
merlin
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