Re: My DataBase can't accept conntecion

[Robert Gravsjà <robert@xxxxxxxx>]

On 2011-01-12 13.13, zab08 wrote:
> we have e test db server, we use jdbc to contect.
> but after a whie, The test db server can not accept connect.
>
>
> useps aux | grep postgrescommand :
> postgres 16904  0.0  0.0  46036  3948 ?        S    17:03   0:00 /usr/local/pgsql/bin/postgres -D /usr/local/pgsql/data
> postgres 16906  0.0  0.0  46144  2192 ?        Ss   17:03   0:00 postgres: writer process
> postgres 16907  0.0  0.0  46036  1088 ?        Ss   17:03   0:00 postgres: wal writer process
> postgres 16908  0.0  0.0  46840  2072 ?        Ss   17:03   0:00 postgres: autovacuum launcher process
> postgres 16909  0.0  0.0  14248  1012 ?        Ss   17:03   0:00 postgres: stats collector process
> postgres 16910  0.0  0.0  46972  2992 ?        Ss   17:03   0:00 postgres: postgres edu 172.29.0.40(40608) idle
> postgres 16911  0.0  0.0  46708  2656 ?        Ss   17:03   0:00 postgres: postgres edu 172.29.0.40(40609) idle
> postgres 16912  0.0  0.0  46708  2628 ?        Ss   17:03   0:00 postgres: postgres edu 172.29.0.40(40610) idle
> postgres 16913  0.0  0.0  46708  2628 ?        Ss   17:03   0:00 postgres: postgres edu 172.29.0.40(40611) idle
> postgres 16914  0.0  0.0  46708  2632 ?        Ss   17:03   0:00 postgres: postgres edu 172.29.0.40(40612) idle
> postgres 16915  0.0  0.0  46708  2636 ?        Ss   17:03   0:00 postgres: postgres edu 172.29.0.40(40613) idle
> postgres 16916  0.0  0.0  46708  2632 ?        Ss   17:03   0:00 postgres: postgres edu 172.29.0.40(40614) idle
> postgres 16917  0.0  0.1  47088  4136 ?        Ss   17:03   0:00 postgres: postgres edu 172.29.0.40(40615) idle
> postgres 16918  0.0  0.1  47060  4236 ?        Ss   17:03   0:00 postgres: postgres edu 172.29.0.40(40616) idle
> postgres 16919  0.0  0.1  47052  4136 ?        Ss   17:03   0:02 postgres: postgres edu 172.29.0.40(40617) idle
> postgres 21619  0.0  0.0  46708  2636 ?        Ss   19:43   0:00 postgres: postgres edu 172.29.0.40(38803) idle
> postgres 21620  0.0  0.0  46708  2636 ?        Ss   19:43   0:00 postgres: postgres edu 172.29.0.40(38804) idle
> postgres 21621  0.0  0.0  46708  2640 ?        Ss   19:43   0:00 postgres: postgres edu 172.29.0.40(38805) idle
> postgres 21622  0.0  0.0  46708  2644 ?        Ss   19:43   0:00 postgres: postgres edu 172.29.0.40(38806) idle
> postgres 21623  0.0  0.0  46708  2644 ?        Ss   19:43   0:00 postgres: postgres edu 172.29.0.40(38807) idle
> postgres 21624  0.0  0.0  46708  2636 ?        Ss   19:43   0:00 postgres: postgres edu 172.29.0.40(38808) idle
> postgres 21625  0.0  0.0  46708  2640 ?        Ss   19:43   0:00 postgres: postgres edu 172.29.0.40(38809) idle
> postgres 21626  0.0  0.0  46708  2644 ?        Ss   19:43   0:00 postgres: postgres edu 172.29.0.40(38810) idle
> postgres 21627  0.0  0.0  46708  2640 ?        Ss   19:43   0:00 postgres: postgres edu 172.29.0.40(38811) idle
> postgres 21628  0.0  0.1  47104  4836 ?        Ss   19:43   0:00 postgres: postgres edu 172.29.0.40(38812) INSERT

Seems like your application never disconnect. Continously creating new 
connections without disconnecting previously made ones will eventually 
exhaust the number of connections configured.

> ...
>
>
>   kill -9 pidcommand to kill all of them in the past? and the test db server is shut down.
> how to analyze the reason of these? and how to solve?

--
Regards,
Robert "roppert" GravsjÃ

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