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Re: ERROR: duplicate key violates unique constraint "pg_type_typname_nsp_index"

From: Michael Guerin <guerin(at)rentec(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: pgsql-novice(at)postgresql(dot)org
Subject: Re: ERROR: duplicate key violates unique constraint "pg_type_typname_nsp_index"
Date: 2004-11-27 20:25:37
Message-ID: 41A8E2C1.8020409@rentec.com (view raw or flat)
Thread:
Lists: pgsql-novice
Tom Lane wrote:

>Michael Guerin <guerin(at)rentec(dot)com> writes:
>  
>
>>     I'm not sure what the cause of this error is, but I figured I 
>>should post it.
>>    
>>
>
>  
>
>>ERROR:  duplicate key violates unique constraint "pg_type_typname_nsp_index"
>>ERROR:  duplicate key violates unique constraint "pg_type_typname_nsp_index"
>>CONTEXT:  SQL statement "create temp table tmp_children ( uniqid bigint, 
>>memberid bigint, membertype varchar(50), ownerid smallint, tag varc
>>har(50), level int4 )"
>>    
>>
>
>Hmm.  It looks like the source of the problem is an
>only-partially-deleted temp table left behind by some prior failure.
>Specifically, the rowtype entry for the table is still there in
>pg_type, though its pg_class entry must be gone or you'd have gotten
>a different error message.  This seems pretty odd, since the catalog
>entries should have been deleted in a single transaction.
>
>Can you look back just before you started getting these, and see if
>there is any record of a backend crashing during exit?
>
>It's too bad you already restored from backup, since you've now wiped
>out all the evidence ...
>
>			regards, tom lane
>  
>
It's a production database, so I had to get it back online.  I did 
however leave the old files around, and restored to a new db install.  
I'll startup the old files on another port to poke around.  I believe 
the only restart happened after the error, i'll confirm this.

-michael


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