Re: System catalog vacuum issues - Mailing list pgsql-hackers

From Craig Ringer
Subject Re: System catalog vacuum issues
Date
Msg-id 52009F1E.2070901@2ndquadrant.com
Whole thread Raw
In response to System catalog vacuum issues  (Vlad Arkhipov <arhipov@dc.baikal.ru>)
Responses Re: System catalog vacuum issues  (Vlad Arkhipov <arhipov@dc.baikal.ru>)
List pgsql-hackers
On 08/06/2013 01:56 PM, Vlad Arkhipov wrote:
> Hello,
> 
> We are suffering from a long-standing issue with autovacuuming/vacuuming
> system catalogs on the production server. We are actively using
> temporary tables in the legacy application, so system catalogs grows
> unbounded in time. Autovacuum does not remove dead tuples and neither do
> the manual vacuum. We are running PostgreSQL 9.2.4 on Linux 2.6.18 x86_64.
> 
> Nobody's holding an open transaction for long periods.

Got any prepared transactions?

SELECT * FROM pg_prepared_xacts;

SHOW max_prepared_transactions;

-- Craig Ringer                   http://www.2ndQuadrant.com/PostgreSQL Development, 24x7 Support, Training & Services



pgsql-hackers by date:

Previous
From: Amit Kapila
Date:
Subject: Re: Move unused buffers to freelist
Next
From: Andres Freund
Date:
Subject: Re: mvcc catalo gsnapshots and TopTransactionContext