Re: pg_dump compress

On Friday, September 23, 2011 6:46:49 am hubert depesz lubaczewski wrote:
> On Thu, Sep 22, 2011 at 11:00:10PM -0700, Roger Niederland wrote:
> > Using pg_dump from the command line with the exe included in windows
> > 32 bit install in postgresql 9.1.
> > pg_dump -U username -f somefile.sql.gz -Z 9 -i dbname
>
> please note that pg_dump --help shows:
> -Z, --compress=0-9 compression level for compressed formats
>
> hint: the part "for compressed formats" is critical.

The docs show:

http://www.postgresql.org/docs/9.1/interactive/app-pgdump.html

-Z 0..9
--compress=0..9

Specify the compression level to use. Zero means no compression. For the
custom archive format, this specifies compression of individual table-data
segments, and the default is to compress at a moderate level. For plain text
output, setting a nonzero compression level causes the entire output file to be
compressed, as though it had been fed through gzip; but the default is not to
compress. The tar archive format currently does not support compression at all.

>
> plain dump is not compressed, you'd have to use -Fc to get compression,
> but it's good to use anyway.
>
> Best regards,
>
> depesz

--
Adrian Klaver
adrian(dot)klaver(at)gmail(dot)com