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* connection limit exceeded
@ 2007-11-30 19:55 Tena Sakai <tsakai@gallo.ucsf.edu>
0 siblings, 1 reply; 10+ messages in thread
From: Tena Sakai @ 2007-11-30 19:55 UTC (permalink / raw)
To: pgsql-admin
Hi Everybody,
On my postgres 8.1.1, I get a response
psql: FATAL: connection limit exceeded for non-superusers
A few questions come to mind...
1) Is this to do with max_connections setting in the postgres
configuration file? (my setting is 100 (I think this is the
default).)
2) how would I look at the "open/used" connections?
3) should I try restarting postgres without changing the setting?
4) what repercussion would there be if I increase this number to,
say, 200? (and would that be a good idea?)
5) finally, what's the best fix? (Do I need to go to pgpool?)
Many thanks in advance.
Regards,
Tena Sakai
tsakai@gallo.ucsf.edu
^ permalink raw reply [nested|flat] 10+ messages in thread
* Re: connection limit exceeded
@ 2007-11-30 20:03 Jonah H. Harris <jonah.harris@gmail.com>
parent: Tena Sakai <tsakai@gallo.ucsf.edu>
0 siblings, 2 replies; 10+ messages in thread
From: Jonah H. Harris @ 2007-11-30 20:03 UTC (permalink / raw)
To: Tena Sakai <tsakai@gallo.ucsf.edu>; +Cc: pgsql-admin
On Nov 30, 2007 2:55 PM, Tena Sakai <tsakai@gallo.ucsf.edu> wrote:
> On my postgres 8.1.1, I get a response
> psql: FATAL: connection limit exceeded for non-superusers
> 1) Is this to do with max_connections setting in the postgres
> configuration file? (my setting is 100 (I think this is the
> default).)
Yep.
> 2) how would I look at the "open/used" connections?
select * from pg_stat_activity;
> 3) should I try restarting postgres without changing the setting?
Has to be restarted for change to take effect.
> 4) what repercussion would there be if I increase this number to,
> say, 200? (and would that be a good idea?)
A little overhead, nothing bad.
> 5) finally, what's the best fix? (Do I need to go to pgpool?)
see pgbouncer
--
Jonah H. Harris, Sr. Software Architect | phone: 732.331.1324
EnterpriseDB Corporation | fax: 732.331.1301
499 Thornall Street, 2nd Floor | jonah.harris@enterprisedb.com
Edison, NJ 08837 | http://www.enterprisedb.com/
^ permalink raw reply [nested|flat] 10+ messages in thread
* Re: connection limit exceeded
@ 2007-11-30 20:34 Tena Sakai <tsakai@gallo.ucsf.edu>
parent: Jonah H. Harris <jonah.harris@gmail.com>
1 sibling, 2 replies; 10+ messages in thread
From: Tena Sakai @ 2007-11-30 20:34 UTC (permalink / raw)
To: Jonah H. Harris <jonah.harris@gmail.com>; +Cc: pgsql-admin
Hi Jonah,
Many thanks!
>> 2) how would I look at the "open/used" connections?
> select * from pg_stat_activity;
This is a wonderful view! How would I properly terminate
these (of course there are 99 of them!) these query process?
Should I do this from unix or is there any postgres tool I
can use?
Thank you.
Regards,
Tena Sakai
tsakai@gallo.ucsf.edu
-----Original Message-----
From: Jonah H. Harris [mailto:jonah.harris@gmail.com]
Sent: Fri 11/30/2007 12:03 PM
To: Tena Sakai
Cc: pgsql-admin@postgresql.org
Subject: Re: [ADMIN] connection limit exceeded
On Nov 30, 2007 2:55 PM, Tena Sakai <tsakai@gallo.ucsf.edu> wrote:
> On my postgres 8.1.1, I get a response
> psql: FATAL: connection limit exceeded for non-superusers
> 1) Is this to do with max_connections setting in the postgres
> configuration file? (my setting is 100 (I think this is the
> default).)
Yep.
> 2) how would I look at the "open/used" connections?
select * from pg_stat_activity;
> 3) should I try restarting postgres without changing the setting?
Has to be restarted for change to take effect.
> 4) what repercussion would there be if I increase this number to,
> say, 200? (and would that be a good idea?)
A little overhead, nothing bad.
> 5) finally, what's the best fix? (Do I need to go to pgpool?)
see pgbouncer
--
Jonah H. Harris, Sr. Software Architect | phone: 732.331.1324
EnterpriseDB Corporation | fax: 732.331.1301
499 Thornall Street, 2nd Floor | jonah.harris@enterprisedb.com
Edison, NJ 08837 | http://www.enterprisedb.com/
^ permalink raw reply [nested|flat] 10+ messages in thread
* Re: connection limit exceeded
@ 2007-11-30 20:43 Gergely CZUCZY <phoemix@harmless.hu>
parent: Jonah H. Harris <jonah.harris@gmail.com>
1 sibling, 0 replies; 10+ messages in thread
From: Gergely CZUCZY @ 2007-11-30 20:43 UTC (permalink / raw)
To: Jonah H. Harris <jonah.harris@gmail.com>; +Cc: Tena Sakai <tsakai@gallo.ucsf.edu>; pgsql-admin
Hi,
I also have this issue (I'm using 8.2.4), but whenever this happens
I see only a few (4-6) postgresql processes in the system, and my
connection limit is set to 128. Kinda strange. Next time when I
notice it I will check pg_stat_activity and report back.
On Fri, Nov 30, 2007 at 03:03:31PM -0500, Jonah H. Harris wrote:
> On Nov 30, 2007 2:55 PM, Tena Sakai <tsakai@gallo.ucsf.edu> wrote:
> > On my postgres 8.1.1, I get a response
> > psql: FATAL: connection limit exceeded for non-superusers
>
> > 1) Is this to do with max_connections setting in the postgres
> > configuration file? (my setting is 100 (I think this is the
> > default).)
>
> Yep.
>
> > 2) how would I look at the "open/used" connections?
>
> select * from pg_stat_activity;
>
> > 3) should I try restarting postgres without changing the setting?
>
> Has to be restarted for change to take effect.
>
> > 4) what repercussion would there be if I increase this number to,
> > say, 200? (and would that be a good idea?)
>
> A little overhead, nothing bad.
>
> > 5) finally, what's the best fix? (Do I need to go to pgpool?)
>
> see pgbouncer
>
> --
> Jonah H. Harris, Sr. Software Architect | phone: 732.331.1324
> EnterpriseDB Corporation | fax: 732.331.1301
> 499 Thornall Street, 2nd Floor | jonah.harris@enterprisedb.com
> Edison, NJ 08837 | http://www.enterprisedb.com/
Sincerely,
Gergely Czuczy
mailto: gergely.czuczy@harmless.hu
--
Weenies test. Geniuses solve problems that arise.
^ permalink raw reply [nested|flat] 10+ messages in thread
* Re: connection limit exceeded
@ 2007-11-30 21:17 Jonah H. Harris <jonah.harris@gmail.com>
parent: Tena Sakai <tsakai@gallo.ucsf.edu>
1 sibling, 1 reply; 10+ messages in thread
From: Jonah H. Harris @ 2007-11-30 21:17 UTC (permalink / raw)
To: Tena Sakai <tsakai@gallo.ucsf.edu>; +Cc: pgsql-admin
On Nov 30, 2007 3:34 PM, Tena Sakai <tsakai@gallo.ucsf.edu> wrote:
> This is a wonderful view! How would I properly terminate
> these (of course there are 99 of them!) these query process?
> Should I do this from unix or is there any postgres tool I
> can use?
pg_cancel_backend will cancel a query on them. As for killing the
process itself, use:
kill -TERM
--
Jonah H. Harris, Sr. Software Architect | phone: 732.331.1324
EnterpriseDB Corporation | fax: 732.331.1301
499 Thornall Street, 2nd Floor | jonah.harris@enterprisedb.com
Edison, NJ 08837 | http://www.enterprisedb.com/
^ permalink raw reply [nested|flat] 10+ messages in thread
* Re: connection limit exceeded
@ 2007-11-30 21:24 Usama Dar <munir.usama@gmail.com>
parent: Tena Sakai <tsakai@gallo.ucsf.edu>
1 sibling, 1 reply; 10+ messages in thread
From: Usama Dar @ 2007-11-30 21:24 UTC (permalink / raw)
To: Tena Sakai <tsakai@gallo.ucsf.edu>; +Cc: Jonah H. Harris <jonah.harris@gmail.com>; pgsql-admin
On Dec 1, 2007 1:34 AM, Tena Sakai <tsakai@gallo.ucsf.edu> wrote:
> Hi Jonah,
>
> Many thanks!
>
> >> 2) how would I look at the "open/used" connections?
> > select * from pg_stat_activity;
>
> This is a wonderful view! How would I properly terminate
> these (of course there are 99 of them!) these query process?
> Should I do this from unix or is there any postgres tool I
> can use?
>
try pg_cancel_backend(pid)
>
>
> Thank you.
>
> Regards,
>
> Tena Sakai
> tsakai@gallo.ucsf.edu
>
>
>
> -----Original Message-----
> From: Jonah H. Harris [mailto:jonah.harris@gmail.com<jonah.harris@gmail.com>
> ]
> Sent: Fri 11/30/2007 12:03 PM
> To: Tena Sakai
> Cc: pgsql-admin@postgresql.org
> Subject: Re: [ADMIN] connection limit exceeded
>
> On Nov 30, 2007 2:55 PM, Tena Sakai <tsakai@gallo.ucsf.edu> wrote:
> > On my postgres 8.1.1, I get a response
> > psql: FATAL: connection limit exceeded for non-superusers
>
> > 1) Is this to do with max_connections setting in the postgres
> > configuration file? (my setting is 100 (I think this is the
> > default).)
>
> Yep.
>
> > 2) how would I look at the "open/used" connections?
>
> select * from pg_stat_activity;
>
> > 3) should I try restarting postgres without changing the setting?
>
> Has to be restarted for change to take effect.
>
> > 4) what repercussion would there be if I increase this number to,
> > say, 200? (and would that be a good idea?)
>
> A little overhead, nothing bad.
>
> > 5) finally, what's the best fix? (Do I need to go to pgpool?)
>
> see pgbouncer
>
> --
> Jonah H. Harris, Sr. Software Architect | phone: 732.331.1324
> EnterpriseDB Corporation | fax: 732.331.1301
> 499 Thornall Street, 2nd Floor | jonah.harris@enterprisedb.com
> Edison, NJ 08837 | http://www.enterprisedb.com/
>
>
--
Usama Munir Dar http://linkedin.com/in/usamadar
Consultant Architect
Cell:+92 321 5020666
Skype: usamadar
^ permalink raw reply [nested|flat] 10+ messages in thread
* Re: connection limit exceeded
@ 2007-11-30 21:27 Tena Sakai <tsakai@gallo.ucsf.edu>
parent: Jonah H. Harris <jonah.harris@gmail.com>
0 siblings, 0 replies; 10+ messages in thread
From: Tena Sakai @ 2007-11-30 21:27 UTC (permalink / raw)
To: Jonah H. Harris <jonah.harris@gmail.com>; +Cc: pgsql-admin
Many thanks, Jonah!
Tena Sakai
tsakai@gallo.ucsf.edu
-----Original Message-----
From: Jonah H. Harris [mailto:jonah.harris@gmail.com]
Sent: Fri 11/30/2007 1:17 PM
To: Tena Sakai
Cc: pgsql-admin@postgresql.org
Subject: Re: [ADMIN] connection limit exceeded
On Nov 30, 2007 3:34 PM, Tena Sakai <tsakai@gallo.ucsf.edu> wrote:
> This is a wonderful view! How would I properly terminate
> these (of course there are 99 of them!) these query process?
> Should I do this from unix or is there any postgres tool I
> can use?
pg_cancel_backend will cancel a query on them. As for killing the
process itself, use:
kill -TERM
--
Jonah H. Harris, Sr. Software Architect | phone: 732.331.1324
EnterpriseDB Corporation | fax: 732.331.1301
499 Thornall Street, 2nd Floor | jonah.harris@enterprisedb.com
Edison, NJ 08837 | http://www.enterprisedb.com/
^ permalink raw reply [nested|flat] 10+ messages in thread
* Re: connection limit exceeded
@ 2007-11-30 21:28 Tena Sakai <tsakai@gallo.ucsf.edu>
parent: Usama Dar <munir.usama@gmail.com>
0 siblings, 0 replies; 10+ messages in thread
From: Tena Sakai @ 2007-11-30 21:28 UTC (permalink / raw)
To: Usama Dar <munir.usama@gmail.com>; +Cc: Jonah H. Harris <jonah.harris@gmail.com>; pgsql-admin
Many thanks, Usama!
Tena Sakai
tsakai@gallo.ucsf.edu
-----Original Message-----
From: Usama Dar [mailto:munir.usama@gmail.com]
Sent: Fri 11/30/2007 1:24 PM
To: Tena Sakai
Cc: Jonah H. Harris; pgsql-admin@postgresql.org
Subject: Re: [ADMIN] connection limit exceeded
On Dec 1, 2007 1:34 AM, Tena Sakai <tsakai@gallo.ucsf.edu> wrote:
> Hi Jonah,
>
> Many thanks!
>
> >> 2) how would I look at the "open/used" connections?
> > select * from pg_stat_activity;
>
> This is a wonderful view! How would I properly terminate
> these (of course there are 99 of them!) these query process?
> Should I do this from unix or is there any postgres tool I
> can use?
>
try pg_cancel_backend(pid)
>
>
> Thank you.
>
> Regards,
>
> Tena Sakai
> tsakai@gallo.ucsf.edu
>
>
>
> -----Original Message-----
> From: Jonah H. Harris [mailto:jonah.harris@gmail.com<jonah.harris@gmail.com>
> ]
> Sent: Fri 11/30/2007 12:03 PM
> To: Tena Sakai
> Cc: pgsql-admin@postgresql.org
> Subject: Re: [ADMIN] connection limit exceeded
>
> On Nov 30, 2007 2:55 PM, Tena Sakai <tsakai@gallo.ucsf.edu> wrote:
> > On my postgres 8.1.1, I get a response
> > psql: FATAL: connection limit exceeded for non-superusers
>
> > 1) Is this to do with max_connections setting in the postgres
> > configuration file? (my setting is 100 (I think this is the
> > default).)
>
> Yep.
>
> > 2) how would I look at the "open/used" connections?
>
> select * from pg_stat_activity;
>
> > 3) should I try restarting postgres without changing the setting?
>
> Has to be restarted for change to take effect.
>
> > 4) what repercussion would there be if I increase this number to,
> > say, 200? (and would that be a good idea?)
>
> A little overhead, nothing bad.
>
> > 5) finally, what's the best fix? (Do I need to go to pgpool?)
>
> see pgbouncer
>
> --
> Jonah H. Harris, Sr. Software Architect | phone: 732.331.1324
> EnterpriseDB Corporation | fax: 732.331.1301
> 499 Thornall Street, 2nd Floor | jonah.harris@enterprisedb.com
> Edison, NJ 08837 | http://www.enterprisedb.com/
>
>
--
Usama Munir Dar http://linkedin.com/in/usamadar
Consultant Architect
Cell:+92 321 5020666
Skype: usamadar
^ permalink raw reply [nested|flat] 10+ messages in thread
* Connection Limit Exceeded
@ 2008-12-09 23:10 Steve Kecskes <steve@outtalimits.com.au>
0 siblings, 1 reply; 10+ messages in thread
From: Steve Kecskes @ 2008-12-09 23:10 UTC (permalink / raw)
To: pgsql-admin
Hi,
Just wondering what actually happens when the connection limit exceeds.
Dec 10 05:19:45 pallas1 postgres[373]: [2-1] FATAL: connection limit
exceeded for non-superusers
Are the requests that are rejected pooled and processed when connection
slots are available?
^ permalink raw reply [nested|flat] 10+ messages in thread
* Re: Connection Limit Exceeded
@ 2008-12-10 01:02 Scott Marlowe <scott.marlowe@gmail.com>
parent: Steve Kecskes <steve@outtalimits.com.au>
0 siblings, 0 replies; 10+ messages in thread
From: Scott Marlowe @ 2008-12-10 01:02 UTC (permalink / raw)
To: Steve Kecskes <steve@outtalimits.com.au>; +Cc: pgsql-admin
On Tue, Dec 9, 2008 at 4:10 PM, Steve Kecskes <steve@outtalimits.com.au> wrote:
> Hi,
>
> Just wondering what actually happens when the connection limit exceeds.
>
> Dec 10 05:19:45 pallas1 postgres[373]: [2-1] FATAL: connection limit
> exceeded for non-superusers
>
> Are the requests that are rejected pooled and processed when connection
> slots are available?
Nope they're refused and you have to come back at a later time and try again.
^ permalink raw reply [nested|flat] 10+ messages in thread
end of thread, other threads:[~2008-12-10 01:02 UTC | newest]
Thread overview: 10+ messages (download: mbox mbox.gz follow: Atom feed)
-- links below jump to the message on this page --
2007-11-30 19:55 connection limit exceeded Tena Sakai <tsakai@gallo.ucsf.edu>
2007-11-30 20:03 ` Jonah H. Harris <jonah.harris@gmail.com>
2007-11-30 20:34 ` Tena Sakai <tsakai@gallo.ucsf.edu>
2007-11-30 21:17 ` Jonah H. Harris <jonah.harris@gmail.com>
2007-11-30 21:27 ` Tena Sakai <tsakai@gallo.ucsf.edu>
2007-11-30 21:24 ` Usama Dar <munir.usama@gmail.com>
2007-11-30 21:28 ` Tena Sakai <tsakai@gallo.ucsf.edu>
2007-11-30 20:43 ` Gergely CZUCZY <phoemix@harmless.hu>
2008-12-09 23:10 Connection Limit Exceeded Steve Kecskes <steve@outtalimits.com.au>
2008-12-10 01:02 ` Re: Connection Limit Exceeded Scott Marlowe <scott.marlowe@gmail.com>
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