Re: ERROR: attempted to delete invisible tuple - Mailing list pgsql-general

From Bryan Murphy
Subject Re: ERROR: attempted to delete invisible tuple
Date
Msg-id 7fd310d10908170947r3e6679fauf4d6cae915187f38@mail.gmail.com
Whole thread Raw
In response to Re: ERROR: attempted to delete invisible tuple  (Greg Stark <gsstark@mit.edu>)
Responses Re: ERROR: attempted to delete invisible tuple
List pgsql-general
On Mon, Aug 17, 2009 at 11:35 AM, Greg Stark <gsstark@mit.edu> wrote:
On Mon, Aug 17, 2009 at 4:23 PM, Bryan Murphy<bmurphy1976@gmail.com> wrote:
>  I've identified 82 bad records.  When I try to query for the records,
> we get the following:
> ERROR:  missing chunk number 0 for toast value 25692661 in pg_toast_25497233
> That's fine.  I've run into that in a few other tables and have just been
> deleting the offending records.  However, in this particular table, when I
> try and delete the records, I get the following error message:
> ERROR:  attempted to delete invisible tuple
> I'm at a loss what to do next.

Can you select xmin,xmax,ctid from the bad tuples?

And also the output of pg_resetxlog -n. I suspect you may have failed
to restore properly and have tuples from the "future" in your
database. Perhaps you're missing at the last WAL file in your
recovery?

If that's the case you may be able to get out of it with pg_resetxlog
and then cleaning up but it would be good to see the data first before
changing things.

Here's the xmin/xmax/ctid for three problematic records:

prodpublic=# select xmin,xmax,ctid from items_extended where id in ('34537ed90d7546d78f2c172fc8eed687', '3e1d99b7124742b7aaf2f869f7637b0e', '499b464f141a48619c5ce0475cbe9150');
   xmin    |   xmax    |    ctid    
-----------+-----------+------------
 262232659 | 308810030 | (689496,3)
 262629744 | 308810034 | (692765,1)
 262643188 | 308810035 | (692920,9)
(3 rows)

I have not yet run pg_resetxlog.

Thanks,
Bryan

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