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* Vacuum problem due to temp tables
@ 2011-02-26 07:00 Bhakti Ghatkar <bghatkar@zedo.com>
0 siblings, 1 reply; 6+ messages in thread
From: Bhakti Ghatkar @ 2011-02-26 07:00 UTC (permalink / raw)
To: pgsql-performance
Hi,
We were running full vacuum on DB when we encountered the error below;
INFO: analyzing "public.bkup_access_control"
INFO: "bkup_access_control": scanned 14420 of 14420 pages, containing
1634113 live rows and 0 dead rows; 30000 rows in sample, 1634113 estimated
total rows
INFO: vacuuming "pg_catalog.pg_index"
*vacuumdb: vacuuming of database "rpt_production" failed: ERROR: duplicate
key value violates unique constraint "pg_index_indexrelid_index"*
DETAIL: Key (indexrelid)=(2678) already exists.
The above table on which the error occured was actually a backup table of an
existing one.
JFI. The backup table was created by
SELECT * into bkup_access_control FROM access_control;
Details :
version
----------------------------------------------------------------------------------------------------------------------------------------
PostgreSQL 9.0.1 on x86_64-unknown-linux-gnu, compiled by GCC gcc (SUSE
Linux) 4.5.0 20100604 [gcc-4_5-branch revision 160292], 64-bit
Can you let us know the reason for this error?
Regards,
Bhakti
^ permalink raw reply [nested|flat] 6+ messages in thread
* Re: Vacuum problem due to temp tables
@ 2011-02-26 17:25 Tom Lane <tgl@sss.pgh.pa.us>
parent: Bhakti Ghatkar <bghatkar@zedo.com>
0 siblings, 1 reply; 6+ messages in thread
From: Tom Lane @ 2011-02-26 17:25 UTC (permalink / raw)
To: Bhakti Ghatkar <bghatkar@zedo.com>; +Cc: pgsql-performance
Bhakti Ghatkar <bghatkar@zedo.com> writes:
> We were running full vacuum on DB when we encountered the error below;
> INFO: vacuuming "pg_catalog.pg_index"
> *vacuumdb: vacuuming of database "rpt_production" failed: ERROR: duplicate
> key value violates unique constraint "pg_index_indexrelid_index"*
> DETAIL: Key (indexrelid)=(2678) already exists.
That's pretty bizarre, but what makes you think it has anything to do
with temp tables? OID 2678 is pg_index_indexrelid_index itself.
It looks to me like you must have duplicate rows in pg_index for that
index (and maybe others?), and the problem is exposed during vacuum full
because it tries to rebuild the indexes.
Could we see the output of
select ctid,xmin,xmax,* from pg_index where indexrelid in
(select indexrelid from pg_index group by 1 having count(*)>1);
regards, tom lane
^ permalink raw reply [nested|flat] 6+ messages in thread
* Re: Vacuum problem due to temp tables
@ 2011-02-28 05:08 Bhakti Ghatkar <bghatkar@zedo.com>
parent: Tom Lane <tgl@sss.pgh.pa.us>
0 siblings, 1 reply; 6+ messages in thread
From: Bhakti Ghatkar @ 2011-02-28 05:08 UTC (permalink / raw)
To: Tom Lane <tgl@sss.pgh.pa.us>; +Cc: pgsql-performance
Tom,
The query which you gave returns me 0 rows.
select ctid,xmin,xmax,* from pg_index where indexrelid in
(select indexrelid from pg_index group by 1 having count(*)>1);
Regards,
Bhakti
On Sat, Feb 26, 2011 at 10:55 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> Bhakti Ghatkar <bghatkar@zedo.com> writes:
> > We were running full vacuum on DB when we encountered the error below;
>
> > INFO: vacuuming "pg_catalog.pg_index"
> > *vacuumdb: vacuuming of database "rpt_production" failed: ERROR:
> duplicate
> > key value violates unique constraint "pg_index_indexrelid_index"*
> > DETAIL: Key (indexrelid)=(2678) already exists.
>
> That's pretty bizarre, but what makes you think it has anything to do
> with temp tables? OID 2678 is pg_index_indexrelid_index itself.
> It looks to me like you must have duplicate rows in pg_index for that
> index (and maybe others?), and the problem is exposed during vacuum full
> because it tries to rebuild the indexes.
>
> Could we see the output of
>
> select ctid,xmin,xmax,* from pg_index where indexrelid in
> (select indexrelid from pg_index group by 1 having count(*)>1);
>
> regards, tom lane
>
^ permalink raw reply [nested|flat] 6+ messages in thread
* Re: Vacuum problem due to temp tables
@ 2011-03-02 15:44 Robert Haas <robertmhaas@gmail.com>
parent: Bhakti Ghatkar <bghatkar@zedo.com>
0 siblings, 1 reply; 6+ messages in thread
From: Robert Haas @ 2011-03-02 15:44 UTC (permalink / raw)
To: Bhakti Ghatkar <bghatkar@zedo.com>; +Cc: Tom Lane <tgl@sss.pgh.pa.us>; pgsql-performance
On Mon, Feb 28, 2011 at 12:08 AM, Bhakti Ghatkar <bghatkar@zedo.com> wrote:
> Tom,
> The query which you gave returns me 0 rows.
> select ctid,xmin,xmax,* from pg_index where indexrelid in
> (select indexrelid from pg_index group by 1 having count(*)>1);
> Regards,
> Bhakti
How about just select ctid,xmin,xmax,* from pg_index?
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
^ permalink raw reply [nested|flat] 6+ messages in thread
* Re: Vacuum problem due to temp tables
@ 2011-03-04 10:26 Vidhya Bondre <meetvbondre@gmail.com>
parent: Robert Haas <robertmhaas@gmail.com>
0 siblings, 1 reply; 6+ messages in thread
From: Vidhya Bondre @ 2011-03-04 10:26 UTC (permalink / raw)
To: Robert Haas <robertmhaas@gmail.com>; +Cc: Bhakti Ghatkar <bghatkar@zedo.com>; Tom Lane <tgl@sss.pgh.pa.us>; pgsql-performance
Robert,
select ctid,xmin,xmax,* from pg_index gives 2074 records.
Regards
Vidhya
On Wed, Mar 2, 2011 at 9:14 PM, Robert Haas <robertmhaas@gmail.com> wrote:
> On Mon, Feb 28, 2011 at 12:08 AM, Bhakti Ghatkar <bghatkar@zedo.com>
> wrote:
> > Tom,
> > The query which you gave returns me 0 rows.
> > select ctid,xmin,xmax,* from pg_index where indexrelid in
> > (select indexrelid from pg_index group by 1 having count(*)>1);
> > Regards,
> > Bhakti
>
> How about just select ctid,xmin,xmax,* from pg_index?
>
> --
> Robert Haas
> EnterpriseDB: http://www.enterprisedb.com
> The Enterprise PostgreSQL Company
>
> --
> Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org)
> To make changes to your subscription:
> http://www.postgresql.org/mailpref/pgsql-performance
>
^ permalink raw reply [nested|flat] 6+ messages in thread
* Re: Vacuum problem due to temp tables
@ 2011-03-04 14:14 Robert Haas <robertmhaas@gmail.com>
parent: Vidhya Bondre <meetvbondre@gmail.com>
0 siblings, 0 replies; 6+ messages in thread
From: Robert Haas @ 2011-03-04 14:14 UTC (permalink / raw)
To: Vidhya Bondre <meetvbondre@gmail.com>; +Cc: Bhakti Ghatkar <bghatkar@zedo.com>; Tom Lane <tgl@sss.pgh.pa.us>; pgsql-performance
On Fri, Mar 4, 2011 at 5:26 AM, Vidhya Bondre <meetvbondre@gmail.com> wrote:
> select ctid,xmin,xmax,* from pg_index gives 2074 records.
Can you put them in a text file and post them here as an attachment?
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
^ permalink raw reply [nested|flat] 6+ messages in thread
end of thread, other threads:[~2011-03-04 14:14 UTC | newest]
Thread overview: 6+ messages (download: mbox mbox.gz follow: Atom feed)
-- links below jump to the message on this page --
2011-02-26 07:00 Vacuum problem due to temp tables Bhakti Ghatkar <bghatkar@zedo.com>
2011-02-26 17:25 ` Tom Lane <tgl@sss.pgh.pa.us>
2011-02-28 05:08 ` Bhakti Ghatkar <bghatkar@zedo.com>
2011-03-02 15:44 ` Robert Haas <robertmhaas@gmail.com>
2011-03-04 10:26 ` Vidhya Bondre <meetvbondre@gmail.com>
2011-03-04 14:14 ` Robert Haas <robertmhaas@gmail.com>
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