Re: Troubles dumping a very large table. - Mailing list pgsql-performance

From Tom Lane
Subject Re: Troubles dumping a very large table.
Date
Msg-id 13141.1230313118@sss.pgh.pa.us
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In response to Re: Troubles dumping a very large table.  (Ted Allen <tallen@blackducksoftware.com>)
Responses Re: Troubles dumping a very large table.  ("Merlin Moncure" <mmoncure@gmail.com>)
List pgsql-performance
Ted Allen <tallen@blackducksoftware.com> writes:
> 600mb measured by get_octet_length on data.  If there is a better way to measure the row/cell size, please let me
knowbecause we thought it was the >1Gb problem too.  We thought we were being conservative by getting rid of the larger
rowsbut I guess we need to get rid of even more. 

Yeah, the average expansion of bytea data in COPY format is about 3X :-(
So you need to get the max row length down to around 300mb.  I'm curious
how you got the data in to start with --- were the values assembled on
the server side?

            regards, tom lane

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