Re: Performance Issue after upgrade from 9 to 11 - Mailing list pgsql-general

From Adrian Klaver
Subject Re: Performance Issue after upgrade from 9 to 11
Date
Msg-id eeeba437-9696-00e7-d574-b486e8eec186@aklaver.com
Whole thread Raw
In response to Performance Issue after upgrade from 9 to 11  (Perumal Raj <perucinci@gmail.com>)
List pgsql-general
On 1/29/20 9:39 AM, Perumal Raj wrote:
> Hi All,
> 
> We have recently upgraded postgres from 9.2 to 11.6 and started seeing 
> performance issue immediately and  able to fix the performance issue 
> after disabling parameter: enable_seqscan.
> 
> Question :
> Should i keep the above parameter always disabled ? If not why the 
> behavior changed in Higher version ?

Without an explain analyze of a representative query it would be hard to 
say.

Also the schema of the the tables involved would be helpful.

> 
> Note:
> Table ANALYZE completed as part of Upgrade activity.

Was this on a single table or all tables?

> 
> Thanks
> Raj


-- 
Adrian Klaver
adrian.klaver@aklaver.com



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