On 11 Aug 2003 at 19:33, [EMAIL PROTECTED] wrote:
>  Currently we are using postgresql 7.3 with Redhat linux 9. We find that 
> when we try to execute 200,000 update statement through JDBC, the performance 
> of degraded obviously for each update statement when comparing with less update 
> statement(eg. 5000). Is there any suggestion that we can improve the 
> performance for executing update statementat postgresql ? Thanks.

How are you bunching your transactions? I mean how many updates per 

And have you tried moving WAL to separate disk for such a update heavy 
environment? Have you are tuned FSM to take care of dead tuples generated in 
vacuum? Are you running autovacuum daemon?

All these things are almost a must for such update heavy environment..


Moore's Constant:       Everybody sets out to do something, and everybody       does 
something, but no one does what he sets out to do.

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