Re: [INTERFACES] Wierd error when creating a table...

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Alex Turner <aturner(at)maaco(dot)com>, "pgsql-interfaces(at)postgreSQL(dot)org" <pgsql-interfaces(at)postgreSQL(dot)org>
Subject: Re: [INTERFACES] Wierd error when creating a table...
Date: 1999-05-27 21:37:52
Message-ID: 23670.927841072@sss.pgh.pa.us
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I wrote:
> That's a bug: the physical file for the relation has already been
> created by the time the failure in creating the index occurs, and
> although all the updates to system tables get backed out, the empty
> file is not removed during the transaction abort.

After further investigation, the above is wrong, or at least obsolete:
the physical file for the table that couldn't be created *is* removed
when the transaction is cleaned up. (At least it is in current 6.5
code; didn't try older versions.) There's still a bug though ---
apparently the system still has an entry for the failed table in its
"relation cache", and that prevents a subsequent CREATE TABLE for the
same table name from succeeding.

A workaround is to exit your psql session and start a new one; the
new backend won't have the erroneous cache entry. This needs to be
fixed though.

regards, tom lane

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