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From: Suresh Borse <s.borse@direction.biz>
To: Julius Tuskenis <julius@nsoft.lt>
Cc: pgsql-admin@postgresql.org
Subject: Re: query optimization
Date: Thu, 10 Jul 2008 15:15:44 +0530
Message-ID: <1215683144.2113.35.camel@dss-052.dsslp.com> (raw)
In-Reply-To: <4875D589.1030107@nsoft.lt>
References: <1215680493.2113.26.camel@dss-052.dsslp.com>
	<4875D589.1030107@nsoft.lt>


Good Afternoon !!!

The view executes very faster for the first time.

When I execute the view again and again suddenly it gets slow or it gets
hang.

I have also traced the query plan but it changes for each execution.Can
we fix the query plan.

I have also tested the view on my test machine but the result was same.

The view contains multi-table joins.

Warm Regards,
Suresh Borse



On Thu, 2008-07-10 at 12:25 +0300, Julius Tuskenis wrote:

> Hello, Suresh
> 
> Maybe its taking long for the first time, and then its faster? Did you 
> noticed any circumstances under witch your query takes longer to execute?
> 
> 
> Suresh Borse rašė:
> > Dear All,
> >
> > I am facing very strange problem in postgres while executing the view.
> >
> > When I execute the view some times it takes few milliseconds, 
> > sometimes it take several seconds and some times doesn't execute.
> >
> > I tried to troubleshoot using the explain plan method. But explain 
> > plan also changes for each execution.
> >
> > Can anybody help me for troubleshooting  and for resolving the 
> > performance issue.
> >
> >
> > Thanks & Regards,
> > Suresh Borse
> >
> >
> 
> 

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