Mixing
Is there a timeout for idle PostgreSQL connections?
1 S postgres 5038 876 0 80 0 - 11962 sk_wai 09:57 ? 00:00:00 postgres: postgres my_app ::1(45035) idle
1 S postgres 9796 876 0 80 0 - 11964 sk_wai 11:01 ? 00:00:00 postgres: postgres my_app ::1(43084) idle
I see a lot of them. We are trying to fix our connection leak. But meanwhile, we want to set a timeout for these idle connections, maybe max to 5 minute.
postgresql database-connection
edited Dec 24 '13 at 1:27
Craig Ringer
194k33391519
asked Nov 5 '12 at 16:24
user1012451user1012451
1,06251929
add a comment |
1 S postgres 5038 876 0 80 0 - 11962 sk_wai 09:57 ? 00:00:00 postgres: postgres my_app ::1(45035) idle
1 S postgres 9796 876 0 80 0 - 11964 sk_wai 11:01 ? 00:00:00 postgres: postgres my_app ::1(43084) idle
I see a lot of them. We are trying to fix our connection leak. But meanwhile, we want to set a timeout for these idle connections, maybe max to 5 minute.
postgresql database-connection
edited Dec 24 '13 at 1:27
Craig Ringer
194k33391519
asked Nov 5 '12 at 16:24
user1012451user1012451
1,06251929
how are you connecting to the DB? socketTimeout might be what you are looking for.
– Doon
Nov 5 '12 at 16:27
We have this legacy Pylons web app, and we used SQLAlchemy but apparently we didn't use it properly. I don't remember. We are trying to fix the leak.socketTimeoutfrom the doc it looks like this close the connection to the DB, entirely. I am trying to close each idle, and the counter starts as soon as the connection is established.
– user1012451
Nov 5 '12 at 16:32
4
see stackoverflow.com/questions/12391174/…
– Doon
Nov 5 '12 at 16:38
@user1012451 When you say "close each idle" - do you mean terminate<IDLE> in transactionsessions, leaving the session running but in<IDLE>state? In other words, terminate the transaction but not the session? (Downvoted: unclear question)
– Craig Ringer
Nov 6 '12 at 0:21
@CraigRinger after a while, we reach max client connection. To solve that, we must restart the webapp, which forces to restart postgresql as well. That wipe out every connection. When we see theseidleforever, we are asking if we could set a timeout on each connection/session (I honestly don't know the correct terminology, sorry). If a transaction takes 5 minutes for a normal web app something must be wrong....
– user1012451
Nov 6 '12 at 5:26
add a comment |
1 S postgres 5038 876 0 80 0 - 11962 sk_wai 09:57 ? 00:00:00 postgres: postgres my_app ::1(45035) idle
1 S postgres 9796 876 0 80 0 - 11964 sk_wai 11:01 ? 00:00:00 postgres: postgres my_app ::1(43084) idle
I see a lot of them. We are trying to fix our connection leak. But meanwhile, we want to set a timeout for these idle connections, maybe max to 5 minute.
postgresql database-connection
edited Dec 24 '13 at 1:27
Craig Ringer
194k33391519
asked Nov 5 '12 at 16:24
user1012451user1012451
1,06251929
1 S postgres 5038 876 0 80 0 - 11962 sk_wai 09:57 ? 00:00:00 postgres: postgres my_app ::1(45035) idle
1 S postgres 9796 876 0 80 0 - 11964 sk_wai 11:01 ? 00:00:00 postgres: postgres my_app ::1(43084) idle
I see a lot of them. We are trying to fix our connection leak. But meanwhile, we want to set a timeout for these idle connections, maybe max to 5 minute.
postgresql database-connection
postgresql database-connection
edited Dec 24 '13 at 1:27
Craig Ringer
194k33391519
asked Nov 5 '12 at 16:24
user1012451user1012451
1,06251929
edited Dec 24 '13 at 1:27
Craig Ringer
194k33391519
asked Nov 5 '12 at 16:24
user1012451user1012451
1,06251929
edited Dec 24 '13 at 1:27
Craig Ringer
194k33391519
edited Dec 24 '13 at 1:27
Craig Ringer
194k33391519
edited Dec 24 '13 at 1:27
Craig Ringer
194k33391519
194k33391519
asked Nov 5 '12 at 16:24
user1012451user1012451
1,06251929
asked Nov 5 '12 at 16:24
user1012451user1012451
1,06251929
asked Nov 5 '12 at 16:24
user1012451user1012451
1,06251929
1,06251929
how are you connecting to the DB? socketTimeout might be what you are looking for.
– Doon
Nov 5 '12 at 16:27
We have this legacy Pylons web app, and we used SQLAlchemy but apparently we didn't use it properly. I don't remember. We are trying to fix the leak.socketTimeoutfrom the doc it looks like this close the connection to the DB, entirely. I am trying to close each idle, and the counter starts as soon as the connection is established.
– user1012451
Nov 5 '12 at 16:32
4
see stackoverflow.com/questions/12391174/…
– Doon
Nov 5 '12 at 16:38
@user1012451 When you say "close each idle" - do you mean terminate<IDLE> in transactionsessions, leaving the session running but in<IDLE>state? In other words, terminate the transaction but not the session? (Downvoted: unclear question)
– Craig Ringer
Nov 6 '12 at 0:21
@CraigRinger after a while, we reach max client connection. To solve that, we must restart the webapp, which forces to restart postgresql as well. That wipe out every connection. When we see theseidleforever, we are asking if we could set a timeout on each connection/session (I honestly don't know the correct terminology, sorry). If a transaction takes 5 minutes for a normal web app something must be wrong....
– user1012451
Nov 6 '12 at 5:26
add a comment |
how are you connecting to the DB? socketTimeout might be what you are looking for.
– Doon
Nov 5 '12 at 16:27
We have this legacy Pylons web app, and we used SQLAlchemy but apparently we didn't use it properly. I don't remember. We are trying to fix the leak.socketTimeoutfrom the doc it looks like this close the connection to the DB, entirely. I am trying to close each idle, and the counter starts as soon as the connection is established.
– user1012451
Nov 5 '12 at 16:32
4
see stackoverflow.com/questions/12391174/…
– Doon
Nov 5 '12 at 16:38
@user1012451 When you say "close each idle" - do you mean terminate<IDLE> in transactionsessions, leaving the session running but in<IDLE>state? In other words, terminate the transaction but not the session? (Downvoted: unclear question)
– Craig Ringer
Nov 6 '12 at 0:21
@CraigRinger after a while, we reach max client connection. To solve that, we must restart the webapp, which forces to restart postgresql as well. That wipe out every connection. When we see theseidleforever, we are asking if we could set a timeout on each connection/session (I honestly don't know the correct terminology, sorry). If a transaction takes 5 minutes for a normal web app something must be wrong....
– user1012451
Nov 6 '12 at 5:26
how are you connecting to the DB? socketTimeout might be what you are looking for.
– Doon
Nov 5 '12 at 16:27
how are you connecting to the DB? socketTimeout might be what you are looking for.
– Doon
Nov 5 '12 at 16:27
We have this legacy Pylons web app, and we used SQLAlchemy but apparently we didn't use it properly. I don't remember. We are trying to fix the leak.
socketTimeout from the doc it looks like this close the connection to the DB, entirely. I am trying to close each idle, and the counter starts as soon as the connection is established.– user1012451
Nov 5 '12 at 16:32
We have this legacy Pylons web app, and we used SQLAlchemy but apparently we didn't use it properly. I don't remember. We are trying to fix the leak.
socketTimeout from the doc it looks like this close the connection to the DB, entirely. I am trying to close each idle, and the counter starts as soon as the connection is established.– user1012451
Nov 5 '12 at 16:32
4
4
see stackoverflow.com/questions/12391174/…
– Doon
Nov 5 '12 at 16:38
see stackoverflow.com/questions/12391174/…
– Doon
Nov 5 '12 at 16:38
@user1012451 When you say "close each idle" - do you mean terminate
<IDLE> in transaction sessions, leaving the session running but in <IDLE> state? In other words, terminate the transaction but not the session? (Downvoted: unclear question)– Craig Ringer
Nov 6 '12 at 0:21
@user1012451 When you say "close each idle" - do you mean terminate
<IDLE> in transaction sessions, leaving the session running but in <IDLE> state? In other words, terminate the transaction but not the session? (Downvoted: unclear question)– Craig Ringer
Nov 6 '12 at 0:21
@CraigRinger after a while, we reach max client connection. To solve that, we must restart the webapp, which forces to restart postgresql as well. That wipe out every connection. When we see these
idle forever, we are asking if we could set a timeout on each connection/session (I honestly don't know the correct terminology, sorry). If a transaction takes 5 minutes for a normal web app something must be wrong....– user1012451
Nov 6 '12 at 5:26
@CraigRinger after a while, we reach max client connection. To solve that, we must restart the webapp, which forces to restart postgresql as well. That wipe out every connection. When we see these
idle forever, we are asking if we could set a timeout on each connection/session (I honestly don't know the correct terminology, sorry). If a transaction takes 5 minutes for a normal web app something must be wrong....– user1012451
Nov 6 '12 at 5:26
add a comment |
4 Answers
4
active
oldest
votes
It sounds like you have a connection leak in your application because it fails to close pooled connections. You aren't having issues just with <idle> in transaction sessions, but with too many connections overall.
Killing connections is not the right answer for that, but it's an OK-ish temporary workaround.
Rather than re-starting PostgreSQL to boot all other connections off a PostgreSQL database, see: How do I detach all other users from a postgres database? and How to drop a PostgreSQL database if there are active connections to it? . The latter shows a better query.
For setting timeouts, as @Doon suggested see How to close idle connections in PostgreSQL automatically?, which advises you to use PgBouncer to proxy for PostgreSQL and manage idle connections. This is a very good idea if you have a buggy application that leaks connections anyway; I very strongly recommend configuring PgBouncer.
A TCP keepalive won't do the job here, because the app is still connected and alive, it just shouldn't be.
In PostgreSQL 9.2 and above, you can use the new state_change timestamp column and the state field of pg_stat_activity to implement an idle connection reaper. Have a cron job run something like this:
SELECT pg_terminate_backend(pid)
FROM pg_stat_activity
WHERE datname = 'regress'
AND pid <> pg_backend_pid()
AND state = 'idle'
AND state_change < current_timestamp - INTERVAL '5' MINUTE;
In older versions you need to implement complicated schemes that keep track of when the connection went idle. Do not bother; just use pgbouncer.
edited Jan 20 at 17:31
Hugo Leao
49157
answered Nov 6 '12 at 5:37
Craig RingerCraig Ringer
194k33391519
2
Good, but it will kill other PgAdmin backends. Use additional condition application_name=''
– Andrew Selivanov
Apr 19 '13 at 12:54
Can I run pg_terminate_backend if I'm using pgbouncer?
– Henley Chiu
Dec 11 '13 at 23:06
@HenleyChiu I don't see why not, though I haven't specifically checked.
– Craig Ringer
Dec 11 '13 at 23:12
Running this seems to have killed my WAL sender process
– Joseph Persie
Feb 9 '16 at 15:24
@CraigRinger even a psql connection is considered as idle connection. And why does one has to close the idle connection at first place. I have a long running code that establish connection with pg perform some dml operation and the then wait for the message over queue and then perform some more dml operation.Now during that period i.e while it is waiting over queue(for message) as mention above even then the connection with postges isidle. why should i close it.
– Viren
Apr 15 '16 at 18:13
|
show 2 more comments
In PostgreSQL 9.6, there's a new option idle_in_transaction_session_timeout which should accomplish what you describe. You can set it using the SET command, e.g.:
SET SESSION idle_in_transaction_session_timeout = '5min';
answered Jan 24 '17 at 1:09
shostishosti
6,14233241
1
It sucks having to ask something so simple but I'm brand new to databases in general - Could you please give a very basic example of how to use this function?
– s g
Mar 31 '17 at 17:54
4
No problem, updated the answer.
– shosti
Mar 31 '17 at 21:39
Anything like this in previous versions of PostgreSQL??
– sdsc81
Sep 25 '17 at 20:06
No, something akin to the other answers is required for previous versions.
– shosti
Sep 25 '17 at 23:46
Do you need to set this parameter at every restart of database? Or after you did once you can forget about? Thanks
– fresko
Oct 8 '18 at 13:33
|
show 1 more comment
In PostgreSQL 9.1, the idle connections with following query. It helped me to ward off the situation which warranted in restarting the database. This happens mostly with JDBC connections opened and not closed properly.
SELECT
pg_terminate_backend(procpid)
FROM
pg_stat_activity
WHERE
current_query = '<IDLE>'
AND
now() - query_start > '00:10:00';
edited Dec 30 '13 at 1:04
Lucas Wilson-Richter
1,8511321
answered May 16 '13 at 8:22
sramaysramay
18113
pg_terminate_backend is in since 8.4
– Andrew Banks
Apr 21 '15 at 17:36
add a comment |
if you are using postgresql 9.6+, then in your postgresql.conf you can set
idle_in_transaction_session_timeout = 30000 (msec)
edited Mar 4 '18 at 1:21
e_i_pi
2,65721632
answered Mar 3 '18 at 20:58
Bertrand DavidBertrand David
313
add a comment |
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4 Answers
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active
oldest
votes
4 Answers
4
active
oldest
votes
active
oldest
votes
active
oldest
votes
It sounds like you have a connection leak in your application because it fails to close pooled connections. You aren't having issues just with <idle> in transaction sessions, but with too many connections overall.
Killing connections is not the right answer for that, but it's an OK-ish temporary workaround.
Rather than re-starting PostgreSQL to boot all other connections off a PostgreSQL database, see: How do I detach all other users from a postgres database? and How to drop a PostgreSQL database if there are active connections to it? . The latter shows a better query.
For setting timeouts, as @Doon suggested see How to close idle connections in PostgreSQL automatically?, which advises you to use PgBouncer to proxy for PostgreSQL and manage idle connections. This is a very good idea if you have a buggy application that leaks connections anyway; I very strongly recommend configuring PgBouncer.
A TCP keepalive won't do the job here, because the app is still connected and alive, it just shouldn't be.
In PostgreSQL 9.2 and above, you can use the new state_change timestamp column and the state field of pg_stat_activity to implement an idle connection reaper. Have a cron job run something like this:
SELECT pg_terminate_backend(pid)
FROM pg_stat_activity
WHERE datname = 'regress'
AND pid <> pg_backend_pid()
AND state = 'idle'
AND state_change < current_timestamp - INTERVAL '5' MINUTE;
In older versions you need to implement complicated schemes that keep track of when the connection went idle. Do not bother; just use pgbouncer.
edited Jan 20 at 17:31
Hugo Leao
49157
answered Nov 6 '12 at 5:37
Craig RingerCraig Ringer
194k33391519
2
Good, but it will kill other PgAdmin backends. Use additional condition application_name=''
– Andrew Selivanov
Apr 19 '13 at 12:54
Can I run pg_terminate_backend if I'm using pgbouncer?
– Henley Chiu
Dec 11 '13 at 23:06
@HenleyChiu I don't see why not, though I haven't specifically checked.
– Craig Ringer
Dec 11 '13 at 23:12
Running this seems to have killed my WAL sender process
– Joseph Persie
Feb 9 '16 at 15:24
@CraigRinger even a psql connection is considered as idle connection. And why does one has to close the idle connection at first place. I have a long running code that establish connection with pg perform some dml operation and the then wait for the message over queue and then perform some more dml operation.Now during that period i.e while it is waiting over queue(for message) as mention above even then the connection with postges isidle. why should i close it.
– Viren
Apr 15 '16 at 18:13
|
show 2 more comments
It sounds like you have a connection leak in your application because it fails to close pooled connections. You aren't having issues just with <idle> in transaction sessions, but with too many connections overall.
Killing connections is not the right answer for that, but it's an OK-ish temporary workaround.
Rather than re-starting PostgreSQL to boot all other connections off a PostgreSQL database, see: How do I detach all other users from a postgres database? and How to drop a PostgreSQL database if there are active connections to it? . The latter shows a better query.
For setting timeouts, as @Doon suggested see How to close idle connections in PostgreSQL automatically?, which advises you to use PgBouncer to proxy for PostgreSQL and manage idle connections. This is a very good idea if you have a buggy application that leaks connections anyway; I very strongly recommend configuring PgBouncer.
A TCP keepalive won't do the job here, because the app is still connected and alive, it just shouldn't be.
In PostgreSQL 9.2 and above, you can use the new state_change timestamp column and the state field of pg_stat_activity to implement an idle connection reaper. Have a cron job run something like this:
SELECT pg_terminate_backend(pid)
FROM pg_stat_activity
WHERE datname = 'regress'
AND pid <> pg_backend_pid()
AND state = 'idle'
AND state_change < current_timestamp - INTERVAL '5' MINUTE;
In older versions you need to implement complicated schemes that keep track of when the connection went idle. Do not bother; just use pgbouncer.
edited Jan 20 at 17:31
Hugo Leao
49157
answered Nov 6 '12 at 5:37
Craig RingerCraig Ringer
194k33391519
2
Good, but it will kill other PgAdmin backends. Use additional condition application_name=''
– Andrew Selivanov
Apr 19 '13 at 12:54
Can I run pg_terminate_backend if I'm using pgbouncer?
– Henley Chiu
Dec 11 '13 at 23:06
@HenleyChiu I don't see why not, though I haven't specifically checked.
– Craig Ringer
Dec 11 '13 at 23:12
Running this seems to have killed my WAL sender process
– Joseph Persie
Feb 9 '16 at 15:24
@CraigRinger even a psql connection is considered as idle connection. And why does one has to close the idle connection at first place. I have a long running code that establish connection with pg perform some dml operation and the then wait for the message over queue and then perform some more dml operation.Now during that period i.e while it is waiting over queue(for message) as mention above even then the connection with postges isidle. why should i close it.
– Viren
Apr 15 '16 at 18:13
|
show 2 more comments
It sounds like you have a connection leak in your application because it fails to close pooled connections. You aren't having issues just with <idle> in transaction sessions, but with too many connections overall.
Killing connections is not the right answer for that, but it's an OK-ish temporary workaround.
Rather than re-starting PostgreSQL to boot all other connections off a PostgreSQL database, see: How do I detach all other users from a postgres database? and How to drop a PostgreSQL database if there are active connections to it? . The latter shows a better query.
For setting timeouts, as @Doon suggested see How to close idle connections in PostgreSQL automatically?, which advises you to use PgBouncer to proxy for PostgreSQL and manage idle connections. This is a very good idea if you have a buggy application that leaks connections anyway; I very strongly recommend configuring PgBouncer.
A TCP keepalive won't do the job here, because the app is still connected and alive, it just shouldn't be.
In PostgreSQL 9.2 and above, you can use the new state_change timestamp column and the state field of pg_stat_activity to implement an idle connection reaper. Have a cron job run something like this:
SELECT pg_terminate_backend(pid)
FROM pg_stat_activity
WHERE datname = 'regress'
AND pid <> pg_backend_pid()
AND state = 'idle'
AND state_change < current_timestamp - INTERVAL '5' MINUTE;
In older versions you need to implement complicated schemes that keep track of when the connection went idle. Do not bother; just use pgbouncer.
edited Jan 20 at 17:31
Hugo Leao
49157
answered Nov 6 '12 at 5:37
Craig RingerCraig Ringer
194k33391519
It sounds like you have a connection leak in your application because it fails to close pooled connections. You aren't having issues just with <idle> in transaction sessions, but with too many connections overall.
Killing connections is not the right answer for that, but it's an OK-ish temporary workaround.
Rather than re-starting PostgreSQL to boot all other connections off a PostgreSQL database, see: How do I detach all other users from a postgres database? and How to drop a PostgreSQL database if there are active connections to it? . The latter shows a better query.
For setting timeouts, as @Doon suggested see How to close idle connections in PostgreSQL automatically?, which advises you to use PgBouncer to proxy for PostgreSQL and manage idle connections. This is a very good idea if you have a buggy application that leaks connections anyway; I very strongly recommend configuring PgBouncer.
A TCP keepalive won't do the job here, because the app is still connected and alive, it just shouldn't be.
In PostgreSQL 9.2 and above, you can use the new state_change timestamp column and the state field of pg_stat_activity to implement an idle connection reaper. Have a cron job run something like this:
SELECT pg_terminate_backend(pid)
FROM pg_stat_activity
WHERE datname = 'regress'
AND pid <> pg_backend_pid()
AND state = 'idle'
AND state_change < current_timestamp - INTERVAL '5' MINUTE;
In older versions you need to implement complicated schemes that keep track of when the connection went idle. Do not bother; just use pgbouncer.
edited Jan 20 at 17:31
Hugo Leao
49157
answered Nov 6 '12 at 5:37
Craig RingerCraig Ringer
194k33391519
edited Jan 20 at 17:31
Hugo Leao
49157
edited Jan 20 at 17:31
Hugo Leao
49157
edited Jan 20 at 17:31
Hugo Leao
49157
49157
answered Nov 6 '12 at 5:37
Craig RingerCraig Ringer
194k33391519
answered Nov 6 '12 at 5:37
Craig RingerCraig Ringer
194k33391519
answered Nov 6 '12 at 5:37
Craig RingerCraig Ringer
194k33391519
194k33391519
2
Good, but it will kill other PgAdmin backends. Use additional condition application_name=''
– Andrew Selivanov
Apr 19 '13 at 12:54
Can I run pg_terminate_backend if I'm using pgbouncer?
– Henley Chiu
Dec 11 '13 at 23:06
@HenleyChiu I don't see why not, though I haven't specifically checked.
– Craig Ringer
Dec 11 '13 at 23:12
Running this seems to have killed my WAL sender process
– Joseph Persie
Feb 9 '16 at 15:24
@CraigRinger even a psql connection is considered as idle connection. And why does one has to close the idle connection at first place. I have a long running code that establish connection with pg perform some dml operation and the then wait for the message over queue and then perform some more dml operation.Now during that period i.e while it is waiting over queue(for message) as mention above even then the connection with postges isidle. why should i close it.
– Viren
Apr 15 '16 at 18:13
|
show 2 more comments
2
Good, but it will kill other PgAdmin backends. Use additional condition application_name=''
– Andrew Selivanov
Apr 19 '13 at 12:54
Can I run pg_terminate_backend if I'm using pgbouncer?
– Henley Chiu
Dec 11 '13 at 23:06
@HenleyChiu I don't see why not, though I haven't specifically checked.
– Craig Ringer
Dec 11 '13 at 23:12
Running this seems to have killed my WAL sender process
– Joseph Persie
Feb 9 '16 at 15:24
@CraigRinger even a psql connection is considered as idle connection. And why does one has to close the idle connection at first place. I have a long running code that establish connection with pg perform some dml operation and the then wait for the message over queue and then perform some more dml operation.Now during that period i.e while it is waiting over queue(for message) as mention above even then the connection with postges isidle. why should i close it.
– Viren
Apr 15 '16 at 18:13
2
2
Good, but it will kill other PgAdmin backends. Use additional condition application_name=''
– Andrew Selivanov
Apr 19 '13 at 12:54
Good, but it will kill other PgAdmin backends. Use additional condition application_name=''
– Andrew Selivanov
Apr 19 '13 at 12:54
Can I run pg_terminate_backend if I'm using pgbouncer?
– Henley Chiu
Dec 11 '13 at 23:06
Can I run pg_terminate_backend if I'm using pgbouncer?
– Henley Chiu
Dec 11 '13 at 23:06
@HenleyChiu I don't see why not, though I haven't specifically checked.
– Craig Ringer
Dec 11 '13 at 23:12
@HenleyChiu I don't see why not, though I haven't specifically checked.
– Craig Ringer
Dec 11 '13 at 23:12
Running this seems to have killed my WAL sender process
– Joseph Persie
Feb 9 '16 at 15:24
Running this seems to have killed my WAL sender process
– Joseph Persie
Feb 9 '16 at 15:24
@CraigRinger even a psql connection is considered as idle connection. And why does one has to close the idle connection at first place. I have a long running code that establish connection with pg perform some dml operation and the then wait for the message over queue and then perform some more dml operation.Now during that period i.e while it is waiting over queue(for message) as mention above even then the connection with postges is
idle. why should i close it.– Viren
Apr 15 '16 at 18:13
@CraigRinger even a psql connection is considered as idle connection. And why does one has to close the idle connection at first place. I have a long running code that establish connection with pg perform some dml operation and the then wait for the message over queue and then perform some more dml operation.Now during that period i.e while it is waiting over queue(for message) as mention above even then the connection with postges is
idle. why should i close it.– Viren
Apr 15 '16 at 18:13
|
show 2 more comments
In PostgreSQL 9.6, there's a new option idle_in_transaction_session_timeout which should accomplish what you describe. You can set it using the SET command, e.g.:
SET SESSION idle_in_transaction_session_timeout = '5min';
answered Jan 24 '17 at 1:09
shostishosti
6,14233241
1
It sucks having to ask something so simple but I'm brand new to databases in general - Could you please give a very basic example of how to use this function?
– s g
Mar 31 '17 at 17:54
4
No problem, updated the answer.
– shosti
Mar 31 '17 at 21:39
Anything like this in previous versions of PostgreSQL??
– sdsc81
Sep 25 '17 at 20:06
No, something akin to the other answers is required for previous versions.
– shosti
Sep 25 '17 at 23:46
Do you need to set this parameter at every restart of database? Or after you did once you can forget about? Thanks
– fresko
Oct 8 '18 at 13:33
|
show 1 more comment
In PostgreSQL 9.6, there's a new option idle_in_transaction_session_timeout which should accomplish what you describe. You can set it using the SET command, e.g.:
SET SESSION idle_in_transaction_session_timeout = '5min';
answered Jan 24 '17 at 1:09
shostishosti
6,14233241
1
It sucks having to ask something so simple but I'm brand new to databases in general - Could you please give a very basic example of how to use this function?
– s g
Mar 31 '17 at 17:54
4
No problem, updated the answer.
– shosti
Mar 31 '17 at 21:39
Anything like this in previous versions of PostgreSQL??
– sdsc81
Sep 25 '17 at 20:06
No, something akin to the other answers is required for previous versions.
– shosti
Sep 25 '17 at 23:46
Do you need to set this parameter at every restart of database? Or after you did once you can forget about? Thanks
– fresko
Oct 8 '18 at 13:33
|
show 1 more comment
In PostgreSQL 9.6, there's a new option idle_in_transaction_session_timeout which should accomplish what you describe. You can set it using the SET command, e.g.:
SET SESSION idle_in_transaction_session_timeout = '5min';
answered Jan 24 '17 at 1:09
shostishosti
6,14233241
In PostgreSQL 9.6, there's a new option idle_in_transaction_session_timeout which should accomplish what you describe. You can set it using the SET command, e.g.:
SET SESSION idle_in_transaction_session_timeout = '5min';
answered Jan 24 '17 at 1:09
shostishosti
6,14233241
edited Mar 31 '17 at 21:38
answered Jan 24 '17 at 1:09
shostishosti
6,14233241
answered Jan 24 '17 at 1:09
shostishosti
6,14233241
answered Jan 24 '17 at 1:09
shostishosti
6,14233241
6,14233241
1
It sucks having to ask something so simple but I'm brand new to databases in general - Could you please give a very basic example of how to use this function?
– s g
Mar 31 '17 at 17:54
4
No problem, updated the answer.
– shosti
Mar 31 '17 at 21:39
Anything like this in previous versions of PostgreSQL??
– sdsc81
Sep 25 '17 at 20:06
No, something akin to the other answers is required for previous versions.
– shosti
Sep 25 '17 at 23:46
Do you need to set this parameter at every restart of database? Or after you did once you can forget about? Thanks
– fresko
Oct 8 '18 at 13:33
|
show 1 more comment
1
It sucks having to ask something so simple but I'm brand new to databases in general - Could you please give a very basic example of how to use this function?
– s g
Mar 31 '17 at 17:54
4
No problem, updated the answer.
– shosti
Mar 31 '17 at 21:39
Anything like this in previous versions of PostgreSQL??
– sdsc81
Sep 25 '17 at 20:06
No, something akin to the other answers is required for previous versions.
– shosti
Sep 25 '17 at 23:46
Do you need to set this parameter at every restart of database? Or after you did once you can forget about? Thanks
– fresko
Oct 8 '18 at 13:33
1
1
It sucks having to ask something so simple but I'm brand new to databases in general - Could you please give a very basic example of how to use this function?
– s g
Mar 31 '17 at 17:54
It sucks having to ask something so simple but I'm brand new to databases in general - Could you please give a very basic example of how to use this function?
– s g
Mar 31 '17 at 17:54
4
4
No problem, updated the answer.
– shosti
Mar 31 '17 at 21:39
No problem, updated the answer.
– shosti
Mar 31 '17 at 21:39
Anything like this in previous versions of PostgreSQL??
– sdsc81
Sep 25 '17 at 20:06
Anything like this in previous versions of PostgreSQL??
– sdsc81
Sep 25 '17 at 20:06
No, something akin to the other answers is required for previous versions.
– shosti
Sep 25 '17 at 23:46
No, something akin to the other answers is required for previous versions.
– shosti
Sep 25 '17 at 23:46
Do you need to set this parameter at every restart of database? Or after you did once you can forget about? Thanks
– fresko
Oct 8 '18 at 13:33
Do you need to set this parameter at every restart of database? Or after you did once you can forget about? Thanks
– fresko
Oct 8 '18 at 13:33
|
show 1 more comment
In PostgreSQL 9.1, the idle connections with following query. It helped me to ward off the situation which warranted in restarting the database. This happens mostly with JDBC connections opened and not closed properly.
SELECT
pg_terminate_backend(procpid)
FROM
pg_stat_activity
WHERE
current_query = '<IDLE>'
AND
now() - query_start > '00:10:00';
edited Dec 30 '13 at 1:04
Lucas Wilson-Richter
1,8511321
answered May 16 '13 at 8:22
sramaysramay
18113
pg_terminate_backend is in since 8.4
– Andrew Banks
Apr 21 '15 at 17:36
add a comment |
In PostgreSQL 9.1, the idle connections with following query. It helped me to ward off the situation which warranted in restarting the database. This happens mostly with JDBC connections opened and not closed properly.
SELECT
pg_terminate_backend(procpid)
FROM
pg_stat_activity
WHERE
current_query = '<IDLE>'
AND
now() - query_start > '00:10:00';
edited Dec 30 '13 at 1:04
Lucas Wilson-Richter
1,8511321
answered May 16 '13 at 8:22
sramaysramay
18113
pg_terminate_backend is in since 8.4
– Andrew Banks
Apr 21 '15 at 17:36
add a comment |
In PostgreSQL 9.1, the idle connections with following query. It helped me to ward off the situation which warranted in restarting the database. This happens mostly with JDBC connections opened and not closed properly.
SELECT
pg_terminate_backend(procpid)
FROM
pg_stat_activity
WHERE
current_query = '<IDLE>'
AND
now() - query_start > '00:10:00';
edited Dec 30 '13 at 1:04
Lucas Wilson-Richter
1,8511321
answered May 16 '13 at 8:22
sramaysramay
18113
In PostgreSQL 9.1, the idle connections with following query. It helped me to ward off the situation which warranted in restarting the database. This happens mostly with JDBC connections opened and not closed properly.
SELECT
pg_terminate_backend(procpid)
FROM
pg_stat_activity
WHERE
current_query = '<IDLE>'
AND
now() - query_start > '00:10:00';
edited Dec 30 '13 at 1:04
Lucas Wilson-Richter
1,8511321
answered May 16 '13 at 8:22
sramaysramay
18113
edited Dec 30 '13 at 1:04
Lucas Wilson-Richter
1,8511321
edited Dec 30 '13 at 1:04
Lucas Wilson-Richter
1,8511321
edited Dec 30 '13 at 1:04
Lucas Wilson-Richter
1,8511321
1,8511321
answered May 16 '13 at 8:22
sramaysramay
18113
answered May 16 '13 at 8:22
sramaysramay
18113
answered May 16 '13 at 8:22
sramaysramay
18113
18113
pg_terminate_backend is in since 8.4
– Andrew Banks
Apr 21 '15 at 17:36
add a comment |
pg_terminate_backend is in since 8.4
– Andrew Banks
Apr 21 '15 at 17:36
pg_terminate_backend is in since 8.4
– Andrew Banks
Apr 21 '15 at 17:36
pg_terminate_backend is in since 8.4
– Andrew Banks
Apr 21 '15 at 17:36
add a comment |
if you are using postgresql 9.6+, then in your postgresql.conf you can set
idle_in_transaction_session_timeout = 30000 (msec)
edited Mar 4 '18 at 1:21
e_i_pi
2,65721632
answered Mar 3 '18 at 20:58
Bertrand DavidBertrand David
313
add a comment |
if you are using postgresql 9.6+, then in your postgresql.conf you can set
idle_in_transaction_session_timeout = 30000 (msec)
edited Mar 4 '18 at 1:21
e_i_pi
2,65721632
answered Mar 3 '18 at 20:58
Bertrand DavidBertrand David
313
add a comment |
if you are using postgresql 9.6+, then in your postgresql.conf you can set
idle_in_transaction_session_timeout = 30000 (msec)
edited Mar 4 '18 at 1:21
e_i_pi
2,65721632
answered Mar 3 '18 at 20:58
Bertrand DavidBertrand David
313
if you are using postgresql 9.6+, then in your postgresql.conf you can set
idle_in_transaction_session_timeout = 30000 (msec)
edited Mar 4 '18 at 1:21
e_i_pi
2,65721632
answered Mar 3 '18 at 20:58
Bertrand DavidBertrand David
313
edited Mar 4 '18 at 1:21
e_i_pi
2,65721632
edited Mar 4 '18 at 1:21
e_i_pi
2,65721632
edited Mar 4 '18 at 1:21
e_i_pi
2,65721632
2,65721632
answered Mar 3 '18 at 20:58
Bertrand DavidBertrand David
313
answered Mar 3 '18 at 20:58
Bertrand DavidBertrand David
313
answered Mar 3 '18 at 20:58
Bertrand DavidBertrand David
313
313
add a comment |
add a comment |
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how are you connecting to the DB? socketTimeout might be what you are looking for.
– Doon
Nov 5 '12 at 16:27
We have this legacy Pylons web app, and we used SQLAlchemy but apparently we didn't use it properly. I don't remember. We are trying to fix the leak.
socketTimeoutfrom the doc it looks like this close the connection to the DB, entirely. I am trying to close each idle, and the counter starts as soon as the connection is established.– user1012451
Nov 5 '12 at 16:32
4
see stackoverflow.com/questions/12391174/…
– Doon
Nov 5 '12 at 16:38
@user1012451 When you say "close each idle" - do you mean terminate
<IDLE> in transactionsessions, leaving the session running but in<IDLE>state? In other words, terminate the transaction but not the session? (Downvoted: unclear question)– Craig Ringer
Nov 6 '12 at 0:21
@CraigRinger after a while, we reach max client connection. To solve that, we must restart the webapp, which forces to restart postgresql as well. That wipe out every connection. When we see these
idleforever, we are asking if we could set a timeout on each connection/session (I honestly don't know the correct terminology, sorry). If a transaction takes 5 minutes for a normal web app something must be wrong....– user1012451
Nov 6 '12 at 5:26