| From: | Claudio Freire <klaussfreire(at)gmail(dot)com> |
|---|---|
| To: | Katharina Koobs <katharina(dot)koobs(at)uni-konstanz(dot)de> |
| Cc: | postgres performance list <pgsql-performance(at)postgresql(dot)org> |
| Subject: | Re: increasing query time after analyze |
| Date: | 2014-02-05 15:28:39 |
| Message-ID: | CAGTBQpYV2RY64L5OzZO2Dxp9ds3Mr1qxQm+wVz-64Uu=jOVd=A@mail.gmail.com |
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| Lists: | pgsql-performance |
On Wed, Feb 5, 2014 at 8:50 AM, Katharina Koobs
<katharina(dot)koobs(at)uni-konstanz(dot)de> wrote:
> Hi,
>
>
>
> We have a PostgreSQL DB, version 9.3 on a Suse Linux system.
>
> We ran the update from postgresql 8.4 to 9.3.
>
> After importing the database the query time of one sql query is about 30
> sec.
>
> After ANALYZE the DB the query time of this sql query is about 45 minutes.
>
> We can see that after analyzing the indexes will no longer be used.
>
>
>
> Has anyone an idea why ANALYZE cause this problem?
If you just restored a dump, you should do a VACUUM ANALYZE.
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