db server processes hanging around - Mailing list pgsql-general

From Mark Rostron
Subject db server processes hanging around
Date
Msg-id CAE=WP0qu2KMA1vJup8A4wAhsKKHUNL=6EfqRmaV+MrOiMM_Ngg@mail.gmail.com
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Responses Re: db server processes hanging around  (Steve Crawford <scrawford@pinpointresearch.com>)
List pgsql-general
hi

we are running out of database connections.

we are using pg 9.0.6 on linux centos 5.7 64bit.
we are not using any go-between connection pools such as pgbouncer or pgpool - connections occur directly from client to database.
the connection setup on the client (java) is default, only providing (user,password,dbhost,dbname).

we have about 10 developers developing java thru IDEA who start/stop the local tomcat server frequently.
i have observed that tomcat doesn't disconnect from pg cleanly when they cycle, and the server processes persist for a long time.
I have had them reduce their local connection factory pool size to 1 (this helped) and increased our max_connection value to 1000.
yet the problem persists.

I have noticed that the server processes do die "after some time" - due to inactivity?
we are looking for a way to control server processes better than we are doing now.

thnx for your time.
mr


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