Обсуждение: Too many IDLE in current_query

Dear all,
i'm checking my postgresql server to try to monitoring all activity that are
running.
i run this query:

postgres=#  select
current_timestamp - query_start as runtime,
current_query
from pg_stat_activity
order by 1 desc;

and the resul is many rows like this:


         runtime         |                current_query
-------------------------+---------------------------------------------
 34 days 06:53:59.959751 | <IDLE>
 34 days 06:53:59.924254 | <IDLE>
 34 days 06:53:56.870348 | <IDLE>
 34 days 06:04:34.553884 | <IDLE>
 34 days 06:04:24.975262 | <IDLE>
 34 days 06:04:20.951703 | <IDLE>
 34 days 06:04:11.200763 | <IDLE>
 34 days 02:45:07.633385 | <IDLE>
 20 days 06:21:00.519184 | <IDLE>
 20 days 04:56:16.008164 | <IDLE>
 20 days 04:35:46.465805 | <IDLE>
 20 days 01:44:22.723898 | <IDLE>
 19 days 07:32:29.484493 | <IDLE>
 2 days 09:08:29.955712  | <IDLE>
 2 days 09:08:29.929274  | <IDLE>
 2 days 09:08:29.914055  | <IDLE>
 2 days 09:08:29.910676  | <IDLE>
 2 days 09:08:29.231103  | <IDLE>
 2 days 09:08:29.22941   | <IDLE>
 2 days 09:08:29.20836   | <IDLE>
 2 days 09:08:29.203906  | <IDLE>
 2 days 09:08:29.198813  | <IDLE>
 2 days 09:08:29.19535   | <IDLE>
 2 days 09:08:28.214741  | <IDLE>
 2 days 09:08:28.210447  | <IDLE>
 2 days 09:08:28.183688  | <IDLE>
 2 days 09:08:28.179618  | <IDLE>
 2 days 09:08:28.161658  | <IDLE>
 2 days 09:08:28.151496  | <IDLE>
 1 day 09:03:14.978079   | <IDLE>
 1 day 09:03:12.246013   | <IDLE>
 1 day 08:53:47.763229   | <IDLE>
 1 day 08:53:46.744188   | <IDLE>
 1 day 08:49:21.584343   | <IDLE>
 1 day 07:44:18.245998   | <IDLE>
 1 day 05:18:29.171981   | <IDLE>
 1 day 03:25:18.260414   | <IDLE>
 1 day 02:47:34.402538   | <IDLE>
 1 day 02:47:33.816568   | <IDLE>
 1 day 02:47:33.472902   | <IDLE>
 1 day 00:59:58.531684   | <IDLE>
 07:07:43.146363         | <IDLE>
 06:52:19.014704         | <IDLE>
...
...

i know that this is just a snapshot of the situation of the server in a
particular moment, so i know that i can see all IDLE queries.
The strange thing is that there are quesries that are running from 34 days.I
think is strange.
Do you have any suggestions? My postgresql version is 8.4. I know that in
postgresql 9.0 i can see also application_name filed.
Thanks for your help

Francesco Boccacci

"francescoboccacci@libero.it" <francescoboccacci@libero.it> wrote:

> i'm checking my postgresql server to try to monitoring all
> activity that are running.
> i run this query:
>
> postgres=#  select
> current_timestamp - query_start as runtime,
> current_query
> from pg_stat_activity
> order by 1 desc;

> The strange thing is that there are quesries that are running from
> 34 days.I think is strange.

query_start is the last time a query started; it doesn't indicate
that it's still running.  In fact <IDLE> means it isn't.  You should
probably exclude rows where xact_start is null or where
current_query = '<IDLE>'.

-Kevin

On Jul 12, 2011, at 9:08 PM, francescoboccacci@libero.it wrote:

> i know that this is just a snapshot of the situation of the server in a
> particular moment, so i know that i can see all IDLE queries.
> The strange thing is that there are quesries that are running from 34 days.I
> think is strange.

<IDLE> mean connection is idle.  It doesn't mean query is running.

> Do you have any suggestions? My postgresql version is 8.4. I know that in
> postgresql 9.0 i can see also application_name filed.


You can use pg_stat_Activity.client_addr and pg_stat_activity.client_port to find the informaiton of client machine.

Thanks & Regards,
Vibhor Kumar
vibhor.aim@gmail.com
Blogs: http://vibhork.blogspot.com
http://vibhorkumar.wordpress.com