Re: template1 database is facing high datfrozenxid

On 02/12/2016 03:10 PM, AI Rumman wrote:
> I checked it and I did not find any log running sql or any open
> transaction. Not even in pg_prepared_xacts.
> And it looks like pg_catalog database is making the alarm.
>
> Any other idea please, where I need to look into.

select * from pg_locks

http://www.postgresql.org/docs/9.1/static/view-pg-locks.html

>
> Thanks.
>
>
> On Fri, Feb 12, 2016 at 3:05 PM, Adrian Klaver
> <adrian(dot)klaver(at)aklaver(dot)com <mailto:adrian(dot)klaver(at)aklaver(dot)com>> wrote:
>
> On 02/12/2016 02:56 PM, AI Rumman wrote:
>
> Hi,
>
> I am running Postgresql 9.1 and I can see the datfrozenxid is
> going high
> and vacuum process is not bringing it down. And this has been
> happening
> on template1 database.
>
> 2016-02-12 16:51:50.400 CST [19445][(at)] : [13-1] WARNING:
> oldest
> xmin is far in the past
> 2016-02-12 16:51:50.400 CST [19445][(at)] : [14-1] HINT:
> Close open
> transactions soon to avoid wraparound problems.
>
>
> The above seems to be the contributing factor.
>
> Does:
>
> select * from pg_stat_activity
>
> show long running queries.
>
>
> 2016-02-12 16:51:50.400 CST [19445][(at)] : [15-1] LOG: automatic
> vacuum of table "template1.pg_catalog.pg_database": index
> scans: 0
> pages: 0 removed, 1 remain
> tuples: 0 removed, 9 remain
> system usage: CPU 0.00s/0.00u sec elapsed 0.00 sec
> 2016-02-12 16:51:50.411 CST [19435][(at)] : [82-1] WARNING:
> oldest
> xmin is far in the past
> 2016-02-12 16:51:50.411 CST [19435][(at)] : [83-1] HINT:
> Close open
> transactions soon to avoid wraparound problems.
> 2016-02-12 16:51:50.411 CST [19435][(at)] : [84-1] LOG: automatic
> vacuum of table "template1.pg_catalog.pg_largeobject":
> index scans: 0
> pages: 0 removed, 0 remain
> tuples: 0 removed, 0 remain
> system usage: CPU 0.00s/0.00u sec elapsed 0.00 sec
>
>
> I vacuum database manually but nothing is working out.
> Please help,
>
> Thanks.
>
>
>
> --
> Adrian Klaver
> adrian(dot)klaver(at)aklaver(dot)com <mailto:adrian(dot)klaver(at)aklaver(dot)com>
>
>

--
Adrian Klaver
adrian(dot)klaver(at)aklaver(dot)com