Re: Troubles dumping a very large table.

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Ted Allen <tallen(at)blackducksoftware(dot)com>
Cc: pgsql-performance(at)postgresql(dot)org
Subject: Re: Troubles dumping a very large table.
Date: 2008-12-24 17:49:56
Message-ID: 12778.1230140996@sss.pgh.pa.us
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Ted Allen <tallen(at)blackducksoftware(dot)com> writes:
> during the upgrade. The trouble is, when I dump the largest table,
> which is 1.1 Tb with indexes, I keep getting the following error at the
> same point in the dump.

> pg_dump: SQL command failed
> pg_dump: Error message from server: ERROR: invalid string enlargement
> request size 1
> pg_dump: The command was: COPY public.large_table (id, data) TO stdout;

> As you can see, the table is two columns, one column is an integer, and
> the other is bytea. Each cell in the data column can be as large as
> 600mb (we had bigger rows as well but we thought they were the source of
> the trouble and moved them elsewhere to be dealt with separately.)

600mb measured how? I have a feeling the problem is that the value
exceeds 1Gb when converted to text form...

regards, tom lane

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