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How to monitor postmaster to find a trouble query?

From: "lt" <ltshadow(at)basecity(dot)com>
To: <pgsql-admin(at)postgresql(dot)org>
Subject: How to monitor postmaster to find a trouble query?
Date: 2001-02-17 17:09:07
Message-ID: 002601c09904$57ca2b80$1030fea9@laptop1 (view raw, whole thread or download thread mbox)
Lists: pgsql-admin
    I am running a productive server of postgresql 7.03, but sometimes it have a high load average value more than 10, it must be caused by a trouble query, although I have carefully checked my queries, I still can not find which query made this. I wish there is a way to monitor the query, for example, when I use 'top' find a postgres process take more than 50% CPU, I can check which query is executed in it. I have tried add query=4 in pq_options file, but nothing recorded in syslog. 


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