| From: | "Albe Laurenz" <laurenz(dot)albe(at)wien(dot)gv(dot)at> |
|---|---|
| To: | "Saurabh Dave *EXTERN*" <saurabhdave(at)gmail(dot)com>, <pgsql-jdbc(at)postgresql(dot)org> |
| Subject: | Re: Queries very slow and memory consumption too high |
| Date: | 2009-06-22 07:32:23 |
| Message-ID: | D960CB61B694CF459DCFB4B0128514C202FF6669@exadv11.host.magwien.gv.at |
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| Lists: | pgsql-jdbc |
Saurabh Dave wrote:
> I am using Postgres 8.2.10 + Hibernate + c3p0 connection pooling.
> For our application we support MySQL + Oracle + MSSQL + Postgres.
>
> With all the other databases our application is working quite
> fine, but with Postgres after a day queries are becoming
> extremely slow and it seems to be taking up all the available memory.
>
> Please let me know what could be the issue. I am new to
> Postgres, so any help would be greatly appreciated.
You'll have to analyze *what* is slow.
Is it the database server or some other component?
It helps to have the various components installed on different machines.
Once you have found out what is slow, drill down there.
If it turns out to be the database and need help, you'll have to provide
EXPLAIN ANALYZE output of a sample query that runs fast in the
beginning and slow later.
Yours,
Laurenz Albe
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