And also you can monitor by scheduling below command in cron. It will collect the detailed data, so that we came to know where the connections are coming.
On Thu, Mar 27, 2014 at 10:20 PM, Merlin Moncure <mmoncure@gmail.com> wrote:
On Wed, Mar 26, 2014 at 7:02 PM, David Johnston <polobo@yahoo.com> wrote: > Nithya Soman wrote >> Hi >> >> Could you please provide any method (query or any logfile) to check >> max connections happened during a time interval in psql DB ? > > Only if the time interval desired in basically zero-width (i.e., > instantaneous). The "pg_stat_activity" view is your friend in this. > > You have numerous options, including self-coding, for capturing and > historically reviewing these snapshots and/or setting up monitoring on them. > > This presumes you are actually wondering "over any given time period how > many open connections were there"? If your question is actually "In the > given time period did any clients get rejected because {max connections} > were already in use." you can check the PostgreSQL logs for the relevant > error.
There's also some useful high level statistics (including connection count) in pg_stat_database. For exact connection count over time frame, I'd turn on log_connections in postgresql.conf and grep the log. merlin
