On Tue, Feb 10, 2015 at 12:55 AM, Bruce Momjian <bruce@xxxxxxxxxx> wrote:
On Wed, Feb 4, 2015 at 08:01:15AM +0100, For@ll wrote:
> Hi,
>
> I have weird problem with database postgresql 9.3.5. I tried to use
> pg_upgrade to migrate dabase from postgresql 9.2 to 9.3 it ended in
> 2 minutes - orginal database has 45GB and after pg_upgrade has
> 200MB.
> So I used pg_dump (9.3.5) with binary format (Fc) and then restore
> with pg_restore 9.3.5. Database did restore but thereis problem with
> statistics. I have the same database on the other server and when I
> look for statistics I have 75 rows and on my broken db I should have
> the same, but I have only 20 rows and there are queries that lasts
> and lasts.
> If I give explain analyze for them it last for 45 minutes and more...
Neither upgrade method preserves optimizer statistics, try ANALYZE.
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Bruce Momjian <bruce@xxxxxxxxxx> http://momjian.us
EnterpriseDB http://enterprisedb.com
+ Everyone has their own god. +
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I think you should try analyze on your 9.3.5.
There is a script get created after performing the pg_upgrade
So I suggest you to run the analyze script and check the statistics in catalog tables.
Regards
Ajinkya Bangale
Database administrator
